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DISCLAIMER
Anymentionoftradenames,commercialproducts,andorganizationsinthisdocumentdoesnotimply
endorsementbytheU.S.EnvironmentalProtectionAgency(EPA)ortheU.S.Government.EPAanditscollaboratorsmakenowarranties,whetherexpressedorimplied,norassumeanylegalliabilityorresponsibilityfor
theaccuracy,completenessorusefulnessofthecontentsofthispublication,oranyportionthereof,norrepresent
thatitsusewouldnotinfringeprivatelyownedrights.Further,EPAcannotbeheldliableforconstructiondefects
ordeficienciesresultingfromtheproperorimproperapplicationofthecontentofthisguidebook.
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WHATAREGUIDEDETAILS?
ThisGuideforHomeEnergyRaterspresentsGuideDetailsthatserveasavisualreferenceforeachofthelineitemsintheHVACSystemQualityInstallation(QI)Rater
Checklist.Thedetailsaregreattoolsforratereducationandwillhelpratersanswercontractorandsubcontractorquestions.Together,theHVACSystemQIRaterChecklistandtheseGuideDetailsprovideacomprehensiveprocessforensuringthatbuildingprofessionalsmeetallaspectsoftheENERGYSTARV3requirements.
ThispageillustrateswhatRaterswillseethroughoutthisGuideoneveryodd(orrighthand)page.
FrontPage
Thisimageillustratesthedetailalong
witharrowstoindicatestepsnecessary
tocompleteit.
Eachofthedetailsislistedtopleft,followedbythe
actionstheRatershouldpresenttotheapplicable
tradetosuccessfullycompletethedetail.
Revision 02
Thisareapresentsapplicablefootnotes.
Alternately,footnotesthatrequireadditionalspacewillbelocatedona
thirdsheet.
Alistofapplicabletradesappearsatthe
bottomtoremindRaterswhichbuilding
professionalsneedtoapplythedetail.
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WHATAREGUIDEDETAILS?CONTINUED
ThispageillustrateswhatRaterswillseethroughoutthisGuideoneveryeven(lefthand)page.ThephotosshowthedetailedactionsthatRatersmustverifyare
completedaccordingtotheENERGYSTARV3requirements.
Imagesofbothproperandimproperinstallationare
includedalongwithacorrespondingthumbsupor
thumbsdownsymbol.
Revision 02
BackPage
Whennecessary,additionaltips,codes
orotherhelpfulinformationappearsin
thelowerhalfofthepage.
Alettercorrespondingtothefrontpageisprovided
tohelpthereaderunderstandwhichstepoftheprocessthephotospresent.
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WHATAREGUIDEDETAILS?CONTINUED
ThispageillustrateswhatRaterswillseeforcertainENERGYSTARV3requirements.Itcontainsfootnotespertinenttotherequirementthatdidnotfitonthefirst
page.
Alistoffootnotespertinenttothespecific
requirementarelistedhere.
ThirdPage
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ENERGYSTARQUALIFIEDHOMES
HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLIST
CONTENTS
SECTION1. ReviewOfHVACSystemQualityInstallationContractorChecklist
SECTION2. DuctQualityInstallation
SECTION3. DuctInsulation
SECTION4. DuctLeakage
SECTION5. WholeBuildingDeliveredVentilation
SECTION6. Controls
SECTION7. VentilationAirInlets&VentilationSource
SECTION8. LocalMechanicalExhaust
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SECTION9. Ventilation&exhaustfanratings(exemptionsforhvacandremote
mountedfans)
SECTION10. Combustionappliances
SECTION11. Filtration
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SECTION1. REVIEWOFHVACSYSTEMQUALITYINSTALLATION
CONTRACTORCHECKLIST
1.1. HVACSystemQualityInstallationContractorchecklistcompletedinitsentirety
andcollectedforrecords,alongwithdocumentationonventilationsystem
(1.3),fullloadcalculations(2.18),AHRIcertificate(3.15),andbalancingreport
(10.2)
1.2. Reviewthefollowingparametersrelatedtosystemcoolingdesign,selection,
andinstallationfromtheHVACContractorchecklist(Contractorchecklistitem#
indicatedinparentheses):
1.2.1. Outdoordesigntemperatures(2.4)areequaltothe1%and99%ACCAManualJdesign
temperaturesforcontractor-designateddesignlocation
1.2.2. Homeorientation(2.5)matchesorientationofratedhome
1.2.3. NumberofOccupants(2.6)equalsnumberofoccupantsinratedhome
1.2.4. Conditionedfloorarea(2.7)iswithin10%ofconditionedfloorareaofratedhome
1.2.5. Windowarea(2.8)iswithin10%ofcalculatedwindowareaofratedhome
1.2.6. PredominantwindowSHGC(2.9)iswithin0.1ofpredominantvalueinratedhome
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1.2.7. Listedlatentcoolingcapacity(3.10)exceedsdesignlatentheatgain(2.12)
1.2.8. Listedsensiblecoolingcapacity(3.11)exceedsdesignsensibleheatgain(2.13)1.2.9. Listedtotalcoolingcapacity(3.12)is95-115%(or95-125%forHeatPumpsinClimateZones
4-8)ofdesigntotalheatgain(2.14),ornextnominalsize
1.2.10. HVACmanufacturerandmodelnumbersoninstalledequipment,contractorchecklist(3.1,3.3,
5.1),andAHRIcertificateorOEMcatalogdataallmatch
1.2.11. Usingreportedliquidline(6.3)orsuctionline(6.5)pressure,correspondingtemp.(as
determinedusingpressure/temperaturechartforrefrigeranttype)matchesreportedcondenser(7.1)orevaporator(7.5)saturationtemperature(+/-3degrees)
1.2.12. Calculatedsubcooling(7.1minus6.4)orsuperheat(6.6minus7.5)valueequalsreportedtarget
subcooling(7.3)orsuperheat(7.7)temperature
1.3. Rater-verifiedsupply&returnductstaticpressure
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HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLIST
1 REVIEWOFHVACSYSTEMQUALITYINSTALLATIONCONTRACTORCHECKLIST
1 CHECKLISTCOMPLETED
DETAIL1.12
HVACSystemQualityInstallationContractorchecklistcompletedinitsentiretyandcollectedforrecords,
alongwithdocumentationonventilationsystem(1.3),
fullloadcalculations(2.18),AHRIcertificate(3.15),andbalancingreport(10.2)
A. ChecktheContractorchecklisttoensureitiscompleted.Itisnot
requiredtoassesstheaccuracyoftheloadcalculationsorfield
verifications.
B. ItistheContractorsexclusiveresponsibilitytoensurethe
systemdesignandinstallationcomplywiththeContractorchecklistspecifications.
FOOTNOTES
2. TheRaterisonlyresponsibleforensuringthattheContractor
hascompletedtheContractorchecklistinitsentiretyandverifying
thediscreteobjectiveparametersreferencedinSection1ofthis
checklist,notforassessingtheaccuracyoftheloadcalculationsorfield
verificationsincludedortoverifytheaccuracyofeveryinputonthe
Contractorchecklist.
REQUIREDDOCUMENTS
HVACSystemQualityInstallationContractorChecklist
ThisdocumentisnecessarytoverifythattheHVACcontractorhas
documentedallpertinentinformationrelatedtoENERGYSTARrequirements
forthehouse'sHVACsystem.
VentilationSystemDocumentation
Thesystemshallhaveatleastonesupplyorexhaustfanwithassociated
ductsandcontrols.Localexhaustfansareallowedtobepartofanexhaust
ventilationsystem.Outdoorairductsconnectedtothereturnsideof
anairhandlerareallowedtobepartofasupplyventilationsystemifmanufacturersrequirementsforreturnairtemperaturearemet.
Theventilationsystemdocumentationwillprovideinformationonwhich
typeofventilationisinstalled.Inaddition,itindicatestheventilationrate
necessaryforRater-verificationpurposes.
FullLoadCalculations
HVACContractorsshallperformaloadcalculationforthespecifichouse
planandorientationofthehometobequalifiedor,forplanswithmultiple
optionsorthatmaybebuiltinmorethanoneorientation,foreveryoption
andorientation.
AHRICertificate
Allevaporatorsandcondensingunitsshallbeproperlymatchedas
demonstratedbyanattachedAHRIcertificate.IfanAHRIcertificateisnot
available,acopyofOEM-providedcatalogdataindicatingacceptable
combinationselectionandperformancedatashallbeattached.
BalancingReport
Thebalancingreportwillprovidethequantityofsupplyandreturn
terminalsineachroom.
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1 REVIEWOFHVACSYSTEMQUALITYINSTALLATIONCONTRACTORCHECKLIST
1 CHECKLISTCOMPLETED
ENERGY STAR Qualified Homes, Version 3 (Rev. 02)
HVAC System Quality Installation Contractor Checklist
1
Version 3 (Rev. 02) - Effective 04/01/2011 Revised 01/10/2011 8
5. Selected Furnace, If Furnace to be InstalledCont./Tech.
Verified
Rater
Verified
5.1 Furnace Manufacturer & Model:
5.2 Furnace Serial #:
5.3 Listed Efficiency: AFUE
5.4 Listed Output Heating Capacity: BTUh
5.5 Listed Output Heat. Cap. (Value 5.4) is 100-140% of Design Heat Loss (Value 2.16) or next nom. Size18,19
6. Refrigerant Tests - Run system for 15 minutes before testing
6.1 Outdoor ambient temp. at condensor: F DB
6.2 Return-side air temp. inside duct near evaporator, during cooling mode: F WB
6.3 Liquid line pressure: psig
6.4 Liquid line temperature: F DB
6.5 Suction line pressure: psig
6.6 Suction line temperature: F DB
7. Refrigerant Calculations
For System with Thermal Expansion Valve (TXV):
7.1 Condenser saturation temp.: F DB (Using Value 6.3)
7.2 Subcooling value: F DB (Value 7.1 - Value 6.4)
7.3 OEM subcooling goal: F DB
7.4 Subcooling deviation: F DB (Value 7.2 - Value 7.3)
For System with Fixed Orifice:
7.5 Evaporator saturation temp.: F DB (Using Value 6.5)
7.6 Superheat value: F DB (Value 6.6 - Value 7.5)
7.7 OEM superheat goal: F DB (Using superheat tables and Values 6.1 & 6.2)
7.8 Superheat deviation: F DB (Value 7.6 - Value 7.7)
7.9 Value 7.4 is 3F or Value 7.8 is 5F
7.10
8. Electrical Measurements
8.1 Evaporator/air handler fan: amps volts watts
8.2 Condensor fan: amps volts watts
8.3 Compressor: amps volts watts
8.4 Electrical measurements within OEM specified tolerance of nameplate value
9. Air Flow Tests
9.1 Air volume at evaporator: CFM
9.2 Test performed in which mode? Heating Cooling 9.3 Return duct static pressure: IWC Test Location
21:
9.4 Supply duct static pressure: IWC Test Location21
:
9.5 Test hole locations are well-marked and accessible21
9.6 Measurement method used: Anemometer Pressure matching22
Flow grid Fan curve Other:
9.7
10. Air Balance
10.1
10.2
11. System Controls
11.1 Operating and safety controls meet OEM requirements
12. Drain pan
12.1 Corrosion-resistant drain pan, properly sloped to drainage system, included24
Technician Name25
: Equipment Installation Date:
Technician Signature25
: Company:
Designer Name
25
:System Design Date:
Designer Signature25
: Company:
N/A
Note: If cold weather makes it impossible to verify proper refrigerant charge, system must include a TXV20
Balancing report indicating quantity of supply and return terminals per room attached
Individual room airflows within the greater of 20% or 25 CFM of the design / application requirements
for the supply and return ducts23
Airflow volume at evaporator (Value 9.1), at fan design speed and full operating load, +/- 15% of the
airflow required per system design (Value 2.16) or within range recommended by OEM
An OEM test procedure has been used in place of sub-cooling or super-heat process and documentation has
been attached that defines this procedure
ENERGY STAR Qualified Homes, Version 3 (Rev. 02)
HVAC System Quality Installation Contractor Checklist
1
Version 3 (Rev. 02) - Effective 04/01/2011 Revised 01/10/2011 7
Home Address: City: State:
System Description2: Cooling system for temporary occupant loads?
3Yes No
1. Whole-Building Mechanical Ventilation Design4
Cont./Tech.
Verified5
Rater
Verified
1.1.
Ventilation system designed to meet ASHRAE 62.2-2010 requirements6.
1.2
1.3
1.4
1.5
2.1 Heat Loss / Gain Method: Manual J v8 ASHRAE 2005 Other:
2.2 Duct Design Method: Manual D Other:
2.3 Equipment Selection Method: Manual S OEM Rec. Other:
2.4 Outdoor Design Temperatures:8
Location: 1%: F 99%: F
2.5 Orientation of Rated Home (e.,g., North, South):
2.6 Number of Occupants Served by System:9
2.7 Conditioned Floor Area in Rated Home: Sq. Ft.
2.8 Window Area in Rated Home: Sq. Ft.
2.9 Predominant Window SHGC in Rated Home:10
SHGC
2.10 Infiltration Rate in Rated Home:11
Summer: Winter:
2.11 Mechanical Ventilation Rate in Rated Home: CFM
2.12 Design Latent Heat Gain: BTUh
2.13 Design Sensible Heat Gain: BTUh
2.14 Design Total Heat Gain: BTUh
2.15 Design Total Heat Loss: BTUh
2.16 Design Airflow:12
CFM
2.17 Design Duct Static Pressure:13
Inches Water Column (IWC)
2.18 Full Load Calculations Report Attached
3. Selected Cooling Equipment, If Cooling Equipment to be Installed
3.1 Condenser Manufacturer & Model:
3.2 Condenser Serial #:
3.3 Evaporator / Fan Coil Manufacturer & Model:
3.4 Evaporator / Fan Coil Serial #:
3.5 AHRI Reference #:1
3.6 Listed Efficiency: EER SEER
3.7 Metering Device Type: TXV Fixed orifice Other:
3.8 Refrigerant Type: R-410a Other:
3.9 Fan Speed Type:15
Fixed Variable (ECM/ICM) Other:
3.10 Listed Sys. Latent Capacity at Design Cond.16
: BTUh
3.11 Listed Sys. Sensible Capacity at Design Cond.16
: BTUh
3.12 Listed Sys. Total Capacity at Design Cond.16
: BTUh
3.13
3.14 Listed Total Cap. (Value 3.12) is 95-115% of Design Total Heat Gain (Value 2.14) or next nom. size
Or for Heat Pumps in Climate Zones 4-8, 95-125% or next nominal size17,18
3.15 AHRI Certificate Attached14
4. Selected Heat Pump Equipment, If Heatpump to be Installed
4.1 AHRI Listed Efficiency: HSPF
4.2 Performance at 17F: Capacity: BTUh Efficiency: COP 4.3 Performance at 47F: Capacity: BTUh Efficiency: COP
N/A
-
-
-
-
-
-
-
-
-
-
-
Documentation is attached with ventilation system type, location, design rate, and frequency and duration of
each ventilation cycle.
Ventilation system does not utilize an intake duct to the return side of the HVAC system unless the system is
designed to operate intermittently and automatically based on a timer and to restrict outdoor air intake when
not in use (e.g., motorized damper).
If present, continuously-operating vent. & exhaust fans designed to operate during all occupiable hrs.
If present, intermittently-operating whole-house ventilation system designed to automatically operate at least
once per day and at least 10% of every 24 hours.
If Listed Sys. Latent Capacity (Value 3.10) < Design Latent Heat Gain (Value 2.12),
ENERGY STAR qualified dehumidifier installed?
2. Heating & Cooling System Design4,7
- Parameters used in the design calculations shall reflect home to be built, specifically, outdoor design temperatures,
home orientation, number of b edrooms, conditioned floor area, windowarea, predominant window performance and insulation levels, infiltration rate, mechanical
ventilation rate, presence of MERV6 or better filter, and indoor temperature setpoints = 70 F for heating; 75F for cooling
-
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1 REVIEWOFHVACSYSTEMQUALITYINSTALLATIONCONTRACTORCHECKLIST
2 PARAMETERSRELATEDTOSYSTEMCOOLINGMET
DETAIL1.2Reviewthefollowingparametersrelatedtosystem
coolingdesign,selection,andinstallationfromtheHVACContractorchecklist(Contractorchecklistitem#
indicatedinparenthesis)(DETAILS1.2.11.2.10):
1.2.1. Outdoordesigntemperatures(2.4)areequaltothe1%and
99%ACCAManualJdesigntemperaturesforcontractor-
designatedlocationoralternatetempssupportedwith
documentation
1.2.2. Homeorientation(2.5)matchesorientationofratedhome
1.2.3. NumberofOccupants(2.6)equalsnumberofoccupantsin
ratedhome4
1.2.4. Conditionedfloorarea(2.7)iswithin10%ofconditioned
floorareaofratedhome
1.2.5. Windowarea(2.8)iswithin10%ofcalculatedwindowareaof
ratedhome
1.2.6. PredominantwindowSHGC(2.9)iswithin0.1ofpredominant
valueinratedhome5
1.2.7. Listedlatentcoolingcapacity(3.10)exceedsdesignlatentheat
gain(2.12)
1.2.8. Listedsensiblecoolingcapacity(3.11)exceedsdesignsensible
heatgain(2.13)
1.2.9. Listedtotalcoolingcapacity(3.12)is95-115%(or95-125%for
HeatPumpsinClimateZones4-8)ofdesigntotalheatgain
(2.14),ornextnominalsize6
1.2.10. HVACmanufacturerandmodelnumbersoninstalled
equipment,contractorchecklist(3.1,3.3,5.1),andAHRI
certificateorOEMcatalogdataallmatch7
Footnoteslocatedonbackofthispage.
ENERGY STAR Qualified Homes, Version 3 (Rev. 01)
HVAC System Quality Installation Contractor Checklist
1Home Address: City: State:
1. Whole-Building Mechanical Ventilation Design2Cont.
Verified
Rater
VerifiedN/A
1.1. Ventilation system designed to meet ASHRAE 62.2-2007 requirements 3.
1.2
1.3 Documentation is attached with ventilation system type, location and design rate.
1.4
1.5
Ventilation system does not utili ze an intake duct to the return side of the HVAC system unless the
system is designed to operate intermittently and automatically based on a timer and to restrict
outdoor air intake when not in use (e.g., motorized damper).
If present, continuously-operating vent. & exhaust fans designed to operate during all occupiable hrs.
If present, intermittently-operating whole-house ventilation system designed to automatically operate
at least once per day and at l east 10% of every 24 hours.
-
-
-
2. Heating & Cooling System Design2,4- Parameters used in the design calculations shall reflect home to be built, specifically, outdoor design
temperatures, home orientation, number of b edrooms, conditioned floor area, window area, predominant window performance, and insulation l evels,
infiltration rate, mechanical ventilation rate, presence of MERV6 or better filter, and indoor temperature setpoints = 70F for heating; 75F for cooling
2.1 Heat Loss / Gain Method: Manual J v8 ASHRAE 2005 Other:
2.2 Duct Design Method: Manual D Other:
2.3 Equipment Selection Method: Manual S OEM Rec. Other:
2.4 Outdoor Design Temperatures Used:5 1%: F 99%: F
2.5 Orientation of Rated Home (e.,g., North, South):
2.6 Number of Bedrooms in Rated Home:
2.7 Conditioned Floor Area in Rated Home: Sq. Ft.
2.8 Window Area in Rated Home: Sq. Ft.
2.9 Predominant Window SHGC in Rated Home:6 SHGC
2.10 Infiltration Rate in Rated Home:7 Summer: Winter:
2.11 Mechanical Ventilation Rate in Rated Home: CFM
2.12 Design Latent Heat Gain: BTUh
2.13 Design Sensible Heat Gain: BTUh
2.14 Design Total Heat Gain: BTUh
2.15 Design Total Heat Loss: BTUh
2.16 Design Airflow: CFM
2.17 Design Duct Static Pressure:8 Inches Water Column (IWC)
2.18 Copy of Load Calculations Attached
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3. Selected Cooling Equipment, If Cooling Equipment to be Installed
3.1 Condenser Manufacturer & Model:
3.2 Condenser Serial #:
3.3 Evaporator / Fan Coil Manufacturer & Model:
3.4 Evaporator / Fan Coil Serial #:
3.5 AHRI Reference #:9
3.6 Listed Efficiency: EER SEER
3.7 Metering Device Type: TXV Fixed orifice Other:
3.8 Refrigerant Type: R-410a Other:
3.9 Fan Speed Type:10 Fixed Variable (ECM/ICM) Other:
3.10 Listed Sys. Latent Capacity at Design Cond.11: BTUh
3.11 Listed Sys. Sensible Capacity at Design Cond.11: BTUh
3.12 Listed Sys. Total Capacity at Design Cond.11: BTUh
3.13
3.14 Listed Total Cap. (Value 3.12) is 95-115% of Design Total Heat Gain (Value 2.14) or next nom. s ize
Or for Heat Pumps in Climate Zones 4-8, 95-125% or next nominal s ize
3.15 AHRI Certificate Attached 9
If Listed Sys. Latent Capacity (Value 3.10) < Desi gn Latent Heat Gain (Value 2.12),
ENERGY STAR qualified dehumidifier ins talled?
4. Selected Heat Pump Equipment, If Heatpump to be Installed
4.1 AHRI Listed Efficiency: HSPF
4.2 Performance at 17F: Capacity: BTUh Efficiency: COP
4.3 Performance at 47F: Capacity: BTUh Efficiency: COP
Version 3 (Rev. 01) - Effective 1/1/2011 Revised 10/18/2010
15
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1 REVIEWOFHVACSYSTEMQUALITYINSTALLATIONCONTRACTORCHECKLIST
2 PARAMETERSRELATEDTOSELECTEDCOOLINGEQUIPMENTMET
FOOTNOTES
4. ThenumberofoccupantsamongallHVACsystemsinthehomeshallbeequaltothe
numberofRESNET-definedbedroomsplusone.Occupantslistedforsystemsforwhich
theheaderofthecontractorchecklistindicatesthatitisdesignedtohandletemporary
occupantloads,asdefinedinfootnote3oftheHVACSystemQualityInstallationContractor
Checklist,shallbepermittedtoexceedthislimit.
5. PredominantisdefinedastheSHGCvalueusedinthegreatestamountofwindowareainthehome.
6. Forcoolingsystems,thenextlargestnominalpieceofequipmentmaybeusedthatis
availabletosatisfythelatentandsensiblerequirements.Single-speedsystemsgenerally
haveOEMnominalsizeincrementsofton.Multi-speedormulti-stageequipmentmay
haveOEMnominalsizeincrementsofoneton.Therefore,theuseoftheseadvancedsystem
typescanprovideextraflexibilitytomeettheequipmentsizingrequirements.
7. IncaseswherethecondenserunitisinstalledafterthetimeofinspectionbytheRater,
theHVACmanufacturerandmodelnumbersoninstalledequipmentcanbedocumented
throughtheuseofphotographsprovidedbytheHVACContractorafterinstallationis
complete.
8. IfcontractorhasindicatedthatanOEMtestprocedurehasbeenusedinplaceofasub-coolingorsuper-heatprocessanddocumentationhasbeenattachedthatdefinesthis
procedure,thentheboxforn/ashallbecheckedforthisitem.
5. Selected Furnace, If Furnace to be InstalledCont.
Verif ied
Rater
Verif ied
5.1 Furnace Manufacturer & Model:
5.2 Furnace Serial #:
5.3 Listed Efficiency: AFUE
5.4 Listed Output Heating Capacity: BTUh
5.5 Listed Output Heat. Cap. (Value 5.4) is 100-140% of Design Heat Loss (Value 2.15) or next nom. size
6. Refrigerant Tests - Run system for 15 minutes before testing
6.1 Outdoor ambient temp. at condenso r: F DB
6.2 Return-side air temp. inside duct near evaporator, during cooling mode: F WB
6.3 Liquid line pressure: psig
6.4 Liquid line temperature: F DB
6.5 Suction line pressure: psig
6.6 Suction line temperature: F DB
7. Refrigerant Calculations
For System with Thermal Expansion Valve (TXV):
7.1 Condense r saturation temp.: F DB (Using Value 6.3)
7.2 Subcooling value: F DB (Value 7.1 - Value 6.4)
7.3 OEM subcooli ng goal: F DB
7.4 Subcooling deviation: F DB (Value 7.2 - Value 7.3)
For System with Fixed Orifice:
7.5 Evaporator saturation temp.: F DB (Using Value 6.5)
7.6 Superheat value: F DB (Value 6.6 - Value 7.5)
7.7 OEM superheat goal: F DB (Using superheat tables and Values 6.1 & 6.2)
7.8 Superheat deviation: F DB (Value 7.6 - Value 7.7)
7.9 Value 7.4 is 3F or Value 7.8 is 5F
8. Electrical Measurements
8.1 Evaporator/air handler fan: amps volts watts
8.2 Condens or fan: amps volts watts
8.3 Compressor: amps volts watts
8.4 Electrical measureme nts within OEM specified tolerance of namepla te value
9. Air Flow Tests
9.1 Air volume at evaporator: CFM
9.2 Test performed in which mode? Heating Cooling 9.3 Return static press ure: IWC Location
13:
9.4 Supply static press ure: IWC Location13:
9.5 Measurement method used: Anemometer Pressure matching14
Flow grid Fan curve Other:
9.6
10. Air Balance
10.1
10.2
11. System Controls
11.1 Operating and safety controls meet OEM requiremen ts
12. Drain pan
12.1 Corrosion- resistan t drain pan, properly sloped to drainage system, included15
Technician Name: Equipment Installation Date:
Technician Signature: Company:
Designer Name16
: System Design Date:Designer Signature16: Company:
Balancing report indicating quantity of supply and return terminals per room attached
Individual room airflows within the greater of 20% or 25 CFM of the design / application
requirements for the supply and return ducts
Airflow volume at evaporator (Value 9.1), at fan design spe ed and full operating loa d, +/- 15% of
the airflow required per system design (Value 2.16) or within range recommended by OEM
Note: If cold w eather makes it impossible to verify proper refrigerant charge, system must include a TXV 12
N/A
DETAIL1.2Continued
Reviewthefollowingparametersrelatedtosystemcoolingdesign,selection,andinstallationfromthe
HVACContractorchecklist(Contractorchecklistitem#
indicatedinparenthesis)(DETAILS1.2.111.2.12):
1.2.11. Usingreportedliquidline(6.3)orsuctionline(6.5)pressure,
correspondingtemp.(asdeterminedusingpressure/
temperaturechartforrefrigeranttype)matchesreported
condenser(7.1)orevaporator(7.5)saturationtemperature
(+/-3degrees)8
1.2.12. Calculatedsubcooling(7.1minus6.4)orsuperheat(6.6minus7.5)valueequalsreportedtargetsubcooling(7.3)or
superheat(7.7)temperature8
ENERGY STAR Qualified Homes, Version 3 (Rev. 01)
HVAC System Quality Installation Contractor Checklist
1
Version 3 (Rev. 01) - Effective 1/1/2011 Revised 10/18/2010
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1 REVIEWOFHVACSYSTEMQUALITYINSTALLATIONCONTRACTORCHECKLIST
3 SUPPLY&RETURNDUCTSTATICPRESSURE
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ENERGYSTARQUALIFIEDHOMES
HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLIST
SECTION2. DUCTQUALITYINSTALLATION
2.1. Connectionsandroutingofductworkcompletedwithoutkinksorsharpbends
2.2. Noexcessivecoiledorloopedflexibleductwork
2.3. Flexibleductsinunconditionedspacenotinstalledincavitiessmallerthan
outerductdiameter;inconditionedspacenotinstalledincavitiessmallerthan
innerductdiameter
2.4. Flexibleductssupportedatintervalsasrecommendedbymanufacturerbutat
adistance5ft.
2.5. Buildingcavitiesnotusedassupplyorreturnductsunlesstheymeetitems3.2,
3.3,4.1,and4.2ofthischecklist
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HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLIST
2.6. HVACducts,cavitiesusedasducts,andcombustioninletsandoutletsmaypass
perpendicularlythroughexteriorwallsbutshallnotberunwithinexteriorwallsunless
atleastR-6continuousinsulationisprovidedonexteriorsideofthecavity,alongwith
aninteriorandexteriorairbarrierwhererequiredbytheThermalEnclosureSystem
Checklist
2.7. Quantity&locationofsupplyandreturnductterminalsmatchcontractorbalancing
report
2.8. Bedroomspressure-balancedusinganycombinationoftransfergrills,jumpducts,
dedicatedreturnducts,and/orundercutdoorstoeither:a)provide1sq.in.offreearea
openingper1CFMofsupplyair,asreportedonthecontractor-providedbalancing
report;orb)achieveaRater-measuredpressuredifferential3Pa(0.012in.w.c.)with
respecttothemainbodyofthehousewhenbedroomdoorsareclosedandtheair
handlerisoperating
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HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLIST
2 DUCTQUALITYINSTALLATION
1 CONNECTIONSANDROUTINGOFDUCTWORKCOMPLETEDWITHOUTKINKSORBENDS
DETAIL2.19
Connectionsandroutingofductworkcompletedwithoutkinksorsharpbends
A. Installductswithoutkinks.Kinksarecausedwhenductsarebent
acrosssharpcornerssuchasframingmembers.
B. Installductswithoutsharpbends.Sharpbendsoccurwhenthe
radiusoftheductcenterlineislessthanoneductdiameter.
C. Coordinatewiththeframer,plumber,andelectricianforeffectiveductinstallation.
FOOTNOTES
9. Kinksaretobeavoidedandarecausedwhenductsarebentacross
sharpcornerssuchasframingmembers.Sharpbendsaretobe
avoidedandoccurwhentheradiusoftheturnintheductislessthan
oneductdiameter.
TRADES
HVAC
FRAMER
PLUMBER
ELECTRICIAN
A
B
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HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLIST
2 DUCTQUALITYINSTALLATION
1 CONNECTIONSANDROUTINGOFDUCTWORKCOMPLETEDWITHOUTKINKSORBENDS
A.
LD LD
LD
Ductiskinkedincavity. Ductisrunstraightandsupported
properly.
Excessivelengthofduct Fanhousingwasorientedinthe
installedcausingsharp correctdirectiontoallowproperexhaustductinstallation.bends.
C.
B. Ductscrammedintocavity, Ductsarerunstraightandkinkedandsharplybent. supportedproperly.
DUCTAIRFLOWBASICS
Eachturn,kink,orcompressionofductworkreducesairflow.
Iftherecommendedamountofairflowisnotdeliveredtotheroom,it
couldleadtohomeownercomfortcomplaints.
DUCTAIRFLOWTIPS
TobestunderstandtheintentoftheHVACcontractor,itishelpfultolook
attheductsdesignedincompliancewithManualD.
Usebalancingdampersinflexductstocontrolflow.Formetalducts,
butterflydampersmaybeusedtocontrolairflow.
Topreventkinksattheductandbootconnection,EPArecommends
usingmetalductelbowinsteadofflexduct.
Webbedtrussesbetweenfloorsallowforductstofreelypassthrough
thefloorsystemwithoutcompromisingthestructure.
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HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLIST
2 DUCTQUALITYINSTALLATION
2 NOEXCESSIVECOILEDORLOOPEDFLEXIBLEDUCTWORK
DETAIL2.210
Noexcessivecoiledorloopedflexibleductwork
A. Installductswithoutexcessivecoiledorloopedflexibleduct
workunlessneededforacousticalcontrol.
B. Installbalancingdamperstolimitflowtodiffusers.
C. Coordinatewiththeframer,plumber,andelectricianforeffectiveductinstallation.
FOOTNOTES
10. Ductsshallnotincludecoiledorloopedductworkexcepttothe
extentneededforacousticalcontrol.Balancingdampersorproper
ductsizingshallbeusedinsteadofloopstolimitflowtodiffusers.
Whenbalancingdampersareused,theyshallbelocatedatthe
trunktolimitnoiseunlessthetrunkwillnotbeaccessiblewhenthe
balancingprocessisconducted.Insuchcases,OpposableBlade
Dampers(OBD)ordampersthatarelocatedintheductbootare
permitted.
A
B
TRADES
HVAC
FRAMER
PLUMBER
ELECTRICIAN
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2 DUCTQUALITYINSTALLATION
2 NOEXCESSIVECOILEDORLOOPEDFLEXIBLEDUCTWORK
LD LD
installed.A. Excessivelengthofduct Ductisrunstraightandsupported
properly.
LD
Excessivelengthofduct FanhousingwasorientedintheC.installedcausingsharp correctdirectiontoallowproperbends. exhaustductinstallation.
Nomechanicaldamper Mechanicaldamperinstalled.B.installed.
DUCTAIRFLOWBASICS
Eachturn,kink,orcompressionofductworkreducesairflow.
Iftherecommendedamountofairflowisnotdeliveredtotheroom,it
couldleadtohomeownercomfortcomplaints.
DUCTAIRFLOWTIPS
TobestunderstandtheintentoftheHVACcontractor,itishelpfultolook
attheductsdesignedincompliancewithManualD.
Usebalancingdampersinflexductstocontrolflow.Formetalducts,
butterflydampersmaybeusedtocontrolairflow.
Topreventkinksattheductandbootconnection,EPArecommends
usingmetalductelbowinsteadofflexduct.
Webbedtrussesbetweenfloorsallowforductstofreelypassthrough
thefloorsystemwithoutcompromisingthestructure.
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2 DUCTQUALITYINSTALLATION
3 FLEXIBLEDUCTSNOTINSTALLEDINCAVITIESSMALLERTHANREQUIREDDIMENSION
DETAIL2.3Flexibleductsinunconditionedspaceshallnotbe
installedincavitiessmallerthanouterductdiameter;Inconditionedspacenotinstalledincavitiessmaller
thaninnerductdiameter
A. Installductstopreventcompressionofductorductinsulation.
DUCTAIRFLOWBASICS
Eachturn,kink,orcompressionofductworkreducesairflow.
Iftherecommendedamountofairflowisnotdeliveredtotheroom,itcouldleadtohomeownercomfortcomplaints.
DUCTAIRFLOWTIPS
TobestunderstandtheintentoftheHVACcontractor,itishelpfultolookattheductsdesignedincompliancewithManualD.
Usebalancingdampersinflexductstocontrolflow.Formetal
ducts,butterflydampersmaybeusedtocontrolairflow.
Topreventkinksattheductandbootconnection,EPA
recommendsusingmetalductelbowinsteadofflexduct.
Webbedtrussesbetweenfloorsallowforductstofreelypass
throughthefloorsystemwithoutcompromisingthestructure.
TRADES
HVAC
A
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2 DUCTQUALITYINSTALLATION
3 FLEXIBLEDUCTSNOTINSTALLEDINCAVITIESSMALLERTHANREQUIREDDIMENSION
Ductiscompressed. Framingallowedductworkto A. Recessedcanlightis DuctsproperlyinstalledwithoutA.beproperlyinstalledwithout compressingductwork. compressionandappropriately
compression. supported.
A. Ductiscompressed. Ductsproperlyinstalledwithoutcompressionandappropriatelysupported.
LD
LD LD
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2 DUCTQUALITYINSTALLATION
4 FLEXIBLEDUCTSSUPPORTEDATINTERVALSASRECOMMENDEDBYMANUFACTURER
DETAIL2.4
Flexibleductssupportedatintervalsasrecommendedbymanufacturerbutatadistance5ft.
A. Installsupportsataminimumofevery5ft.topreventsagging.
B. Installsupportsatleast1in.wide.
C. Installsupportswithoutcompressingtheductandtheduct
insulation.
DUCTAIRFLOWBASICS
Eachturn,kink,orcompressionofductworkreducesairflow.
Iftherecommendedamountofairflowisnotdeliveredtotheroom,itcouldleadtohomeownercomfortcomplaints.
DUCTAIRFLOWTIPS
TobestunderstandtheintentoftheHVACcontractor,itishelpfultolookattheductsdesignedincompliancewithManualD.
Usebalancingdampersinflexductstocontrolflow.Formetal
ducts,butterflydampersmaybeusedtocontrolairflow.
Topreventkinksattheductandbootconnection,EPA
recommendsusingmetalductelbowinsteadofflexduct.
Webbedtrussesbetweenfloorsallowforductstofreelypass
throughthefloorsystemwithoutcompromisingthestructure.
TRADES
HVAC
A-C
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2 DUCTQUALITYINSTALLATION
5 BUILDINGCAVITIESNOTUSEDASSUPPLYORRETURNDUCTS
DETAIL2.5
Buildingcavitiesnotusedassupplyorreturnducts
unlesstheymeetitems3.2,3.3,4.1,and4.2ofthischecklist
A. Avoidusingbuildingcavitiesasductsduetothedifficultyofproperlyairsealingandinsulatingthem.
If building cavities are used:
B. Installinsulationwithoutmisalignments,compressions,gaps,or
voidsinallcavitiesusedforducts.
C. Ifnon-rigidinsulationisused,installarigidairbarrierorother
supportingmaterialtoholdinsulationinplace.
D. Sealallseams,gaps,andholesoftheairbarrierwithcaulkorfoam.
DUCTINSTALLATIONTIPS
EPArequiresthatallductsinexteriorwallsmustbewithintheairbarrieraswellasthethermalboundary.
ItisimportantfortheframerandHVACcontractortocoordinateonthelocationofareturnduct.Thisallowsforproperspacingofthefloororroofstructureforinstallationofthereturn.
Ifinstallingsupplyductswithinthewalls,verifythattheductiscapableof outputtingthenecessaryairflow.Typically,only
double-wallassemblieswillhaveenoughdepthtoallowforproper
insulationandductsize.
Ifinstallingreturnductsusingthefloororceilingstructure,EPA
recommendstosealboththeexteriorandtheinteriorofallreturn
boxestopreventairleakage.
TRADES
HVAC
B
C&D
SEAL
S E
A L
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2 DUCTQUALITYINSTALLATION
6 HVACINEXTERIORWALLSMUSTHAVECONTINUOUSR6INSULATION
DETAIL2.6
HVACducts,cavitiesusedasducts,andcombustion
inletsandoutletsmaypassperpendicularlythroughexteriorwallsbutshallnotberunwithinexteriorwalls
unlessatleastR6continuousinsulationisprovided
onexteriorsideofthecavity,alongwithaninterior
andexteriorairbarrierwhererequiredbytheThermalEnclosureChecklist
A. Installinsulationwithoutmisalignments,compressions,gaps,or
voidsinallbuildingcavitieswithductsorcavitiesusedasducts.
B. Ifnon-rigidinsulationisused,installarigidairbarrierorothersupportingmaterialtoholdinsulationinplace.
C. Sealallseams,gaps,andholesoftheairbarrierwithcaulkorfoam.
DUCTINSTALLATIONTIPS
EPArequiresthatallductsinexteriorwallsmustbewithintheairbarrieraswellasthethermalboundary.
ItisimportantfortheframerandHVACcontractortocoordinateon
thelocationofareturnduct.Thisallowsforproperspacingofthefloororroofstructureforinstallationofthereturn.
Ifinstallingsupplyductswithinthewalls,verifythattheduct
iscapableof outputtingthenecessaryairflow.Typically,only
double-wallassemblieswillhaveenoughdepthtoallowforproper
insulationandductsize.
Ifinstallingreturnductsusingthefloororceilingstructure,EPA
recommendstosealboththeexteriorandtheinteriorofallreturn
boxestopreventairleakage.TRADES
HVAC
A
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2 DUCTQUALITYINSTALLATION
6 HVACINEXTERIORWALLSMUSTHAVECONTINUOUSR6INSULATION
LD
GOODPICOFPROPERLY
INSTALLEDINSULATIONIN
BUILDINGCAVITYUSEDAS
ADUCT
Inadequateamount
ofinsulationinstalled
withcompression,
misalignment,andvoids.
GOODPICOFPROPERLYSEALEDBUILDINGCAVITY
USEDASADUCT
A.
LD
LD
BADPICOFINSULATION
INSTALLEDWITHOUTAIR
BARRIERINBUILDING
CAVITYUSEDASADUCT
B.
GOODPICOFRIGIDAIR
BARRIERINSTALLEDIN
BUILDINGCAVITYUSEDAS
ADUCT
Revision 02
Noinsulationinstalledin
cavityandnotairsealed.
C.
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2 DUCTQUALITYINSTALLATION
7 DUCTTERMINALSMATCHBALANCINGREPORT
DETAIL2.7Quantityandlocationofsupplyandreturnduct
terminalsmatchcontractorprovidedbalancingreport
A. Verifyductsarelocatedwherespecifiedonthebalancingreport.
B. Verifythenumberofductsmatchthebalancingreport.
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2 DUCTQUALITYINSTALLATION
8 BEDROOMSPRESSUREBALANCED
DETAIL2.8A11
Bedroomspressurebalancedusinganycombinationoftransfergrills,jumpducts,dedicatedreturnducts,and/orundercutdoorstoprovide
1sq.in.offreeareaopeningper1CFMofsupplyair,asreportedonthecontractorprovidedbalancingreport:
A. RefertothebalancingreportprovidedbytheHVACcontractorforthe
bedroomairflowstosizethetransfergrillsand/orjumperducts.
B. Installandsealproperlysizedtransfergrillsduringframing.Bothopenings
ofthetransfergrillmusthavetherequiredfreearea.
C. Iftransfergrillsarenotused,installandsealjumperductsduringframing.
Bothopeningsandductsmusthavetherequiredfreearea.
D. EPArecommendsthatdoorsareundercuttoapproximately3/4in.abovethefinishedfloor.
FootnotelocatedonpageafterDetail2.8B.
Freearea
opening
required
Height
requiredfor
10in.wide
transfer
grill*
Height
requiredfor
12in.wide
transfer
grill*
Height
requiredfor
14in.wide
transfer
grill*
Jumper
duct
diameter
in2 in in in in
R
ooms
upplyairflow
(CFM)
50 50 6.7 5.6 4.8 8
75 75 10 8.3 7.1 10
100 100 13.3 11.1 9.5 12
125 125 - 13.8 11.9 14
150 150 - - 14.3 14
175 175 - - - 16
200 200 - - - 16
* Assumesthenetfreeareaofthetransfergrillas.75in.
B
C
TRADES
FRAMER
HVAC
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Ducttobootconnectionofjump
ductisproperlysealedwithmastic.
D. Doorisnotundercutthereforenotcontributing
Doorhasbeenundercuttoallow
forspecifiedamountofairflowtopressurebalancing. thereforecontributingtopressure
balancing.
LD
LD
Grillandductsizebasedon B. Transfergrillnotsealed. Transfergrillsealedwithmastic. calculatedrequirementsfornetfree
area.
Revision 02
Ducttobootconnectionof
jumpductnotfastenedandsealed.
C.
LD
GOODPICOFNO/
UNDERSIZEDGRILLOR
DUCTSINSTALLEDTO
PRESSUREBALANCEROOM
A.
LD
HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLIST
2 DUCTQUALITYINSTALLATION
8 BEDROOMSPRESSUREBALANCED
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2 DUCTQUALITYINSTALLATION
8 BEDROOMSPRESSUREBALANCED
DETAIL2.8B11
Bedroomspressurebalancedusinganycombinationoftransfergrills,jumpducts,dedicatedreturnducts,and/
orundercutdoorstoachieveaRatermeasuredpressuredifferential3Pa(0.012in.w.c.)withrespecttothemain
bodyofthehousewhenbedroomdoorsareclosedand
theairhandlerisoperating
A. EPArecommendsthattransfergrills,jumperductsordedicated
returnsbeinstalledanddoorsundercuttoapproximately3/4
abovethefinishedfloor.
B. Testthepressuresofeachbedroom.
ROOM PRESSUREPA WITH RESPECTTOMAINB ODY
Bedroom1
Bedroom2
Bedroom3
Bedroom4
Bedroom5
B
C
TRADES
FRAMER
HVAC
Bedroom6
FOOTNOTES
11. ForHVACsystemwithmulti-speedfans,thehighestdesignfan
speedshallbeusedwhenverifyingthisrequirement.
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2 DUCTQUALITYINSTALLATION
8 BEDROOMSPRESSUREBALANCED
LD LD
A. Returnhasnotbeensealed. Returnducthasbeenproperlysealedwithmastic.
PRESSURERELIEFTIPS
EPArecommendsthatHVACContractorsinstalltransfergrills,jumper
ducts,ordedicatedreturns.
EPArecommendsthatFramersundercutdoorstoapproximately3/4
abovethefinishedfloor.
Iftransfergrillsareused,Contractorsmustinstallandsealproperlysized
transfergrillsaccordingtotheloadcalculation.
Ifjumperductsareinstalled,Contractorsmustsealallseams,gaps,and
holesoftheductsandconnections.
Ifreturnductsareinstalled,Contractorsmustsealallseams,gaps,and
holesofthereturnductsystemwithmasticandsealthereturnboxtothe
floor,wall,orceilingwithmastic,caulk,and/orfoam.
Toseephotosofproperandimproperinstallation,seeDetail2.8A.
Returnboxhasnotbeen ReturnboxhasbeenproperlyB.sealed. sealedwithmastic.
PRESSURETESTINGTIPS
Priortotestingpressures:
Verifyallsupplyandreturnterminationsareunrestricted.
TurntheHVACsystemontocoolingmode.Ifthereisnocoolingmode,setittoheatingmode.
Verifyairisblowingoutofthesupplyterminations.
Verifythereferencepressureismeasuringtheoutdoorpressure.
Testallpressuresbyplacingthepressuremeasuringdeviceineach
bedroomwiththedoorshut.
ADDITIONALINFORMATION
Foradditionalinformationandspecificducttestingprotocolspleaserefer
toRESNETChapter8(StandardforPerformanceTestingandWorkScope:
EnclosureandAirDistributionLeakageTesting).
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ENERGYSTARQUALIFIEDHOMES
HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLIST
SECTION3. DUCTINSULATION
3.1. Allconnectionstotrunkductsinunconditionedspaceareinsulated
3.2. Prescriptive Path:Supplyductsinunconditionedattichaveinsulation
R-8
Performance Path:SupplyductsinunconditionedattichaveinsulationR-6
3.3. Allothersupplyductsandallreturnductsinunconditionedspacehave
insulationR-6
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3 DUCTINSULATION
1 ALLCONNECTIONSTOTRUNKDUCTSINUNCONDITIONEDSPACEAREINSULATED
DETAIL3.1
Allconnectionstotrunkductsinunconditionedspace
areinsulated
A. Sealallseams,gaps,andholesofalltrunkductconnections
beforeinstallinginsulation,preferablywithmastic.
B. Installinsulationwithoutmisalignments,compressions,gaps,or
voidsaroundallconnectionsandexposedductwork.
C. Sealductinsulationtoboottopreventaccumulationof
condensation,preferablywithmastic.
CONNECTIONSTOSEALANDINSPECT
Listedbelowarecommonplacesinaductsystem,whereHVAC
ContractorsmustsealinunconditionedspacesandareasthatRaters
mustinspectforproperlysealedandinsulatedconnections:
SUPPLY
Boots
Ductsplicing(twoductsputtogether)
Mainsupplytrunktoductwork
RETURN
Returnboxtoductwork
PRESSUREBALANCING
Jumpductboxestoductwork
Dedicatedreturnboxestoductwork
VENTILATION
Returnboxtooutsideairductwork
Exhaustfanstodedicatedductwork ERV/HRVtodedicatedductwork
TRADES
HVAC
B&C
SEAL
SEAL
SEAL
SEAL
B&C
TRADES
HVAC
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3 DUCTINSULATION
1 ALLCONNECTIONSTOTRUNKDUCTSINUNCONDITIONEDSPACEAREINSULATED
Trunktoductconnections Trunktoductconnectionsare Ductworkisuninsulated SeamsarebeingproperlysealedA.areonlymechanically properlyinsulatedandhavebeen andnotsealedatseams. withmasticandmeshtape.
fastenedandnotsealed. sealedwithmastic.
C.
A.
LD
Bootisuninsulated. Ductinsulationisinstalledover Insulationdoesnotcover BoothasbeencoveredwithB.boot. bootandisnotsealed. insulationandsealedwithmastic.
Revision 02
LD
LD LD
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3 DUCTINSULATION
23 ALLDUCTSINUNCONDITIONEDSPACEINSULATED
DETAIL3.2
Prescriptive Path:Supplyductsinunconditionedattic
haveinsulationR8
Performance Path:Supplyductsinunconditionedattic
haveinsulationR6
A. Installinsulatedductwork,boxesandbootsinallunconditioned
atticspacestomeeteithertheprescriptiveorperformancepath.
B. Installallductsinunconditionedspaceswithoutcompressing
theinsulation.
DETAIL3.3
Allothersupplyductsandallreturnductsin
unconditionedspacehaveinsulationR6
A. Installinsulatedductwork,boxesandbootsinallunconditioned
spaces.
B. Installallductsinunconditionedspaceswithoutcompressing
theinsulation.
Common unconditioned places include:
Basements
VentedCrawlspaces
ClosedCrawlspaces BonusRoomAtticSpace
TRADES
HVAC
A
A
BLABEL
LABEL
LABEL
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3 DUCTINSULATION
23 ALLDUCTSINUNCONDITIONEDSPACEINSULATED
A. Ductislocatedin Ductislocatedinunconditionedunconditionedspaceandis spaceandisproperlyinsulated.
notinsulated.
ENERGYSTARPRESCRIPTIVEPATH
Theprescriptivepathprovidesasinglesetofmeasuresthatcanbeusedtoconstruct
anENERGYSTARqualifiedhome.
Modelingisnotrequired,butnotrade-offsareallowed.Followthesestepstousethe
prescriptivepath:1. Firstassesseligibilityofusingtheprescriptivepathbycomparingtheconditioned
floorarea(CFA)ofthehometobebuilttotheCFAoftheBenchmarkHome,as
specifiedinExhibit3.TheCFAoftheBenchmarkHomeisdeterminedbasedon
thenumberofbedroomsinthehometobebuilt.IftheCFAofthehometobe
builtexceedsthisvalue,thentheperformancepathshallbeused.
2. Ifthehometobebuiltiseligibletofollowtheprescriptivepath,buildthehome
usingthemandatoryrequirementsforallqualifiedhomes,Exhibit1,andall
requirementsoftheENERGYSTARReferenceDesign,Exhibit2.
3. VerifythatallrequirementshavebeenmetusingaRater.
LD
B. Ductisinsulatedbut Ductsareproperlyinsulatedandstrappingiscompressing supportedwithoutcompressing
theinsulationtherefore theinsulation.
reducingtheR-value.
ENERGYSTARPERFORMANCEPATH
Theperformancepathprovidesflexibilitytoselectacustomcombinationofmeasures
foreachhomethatisequivalentinperformancetotheminimumrequirementsofthe
ENERGYSTARReferenceDesignHome.Exhibit1.4Equivalentperformanceisassessed
throughenergymodeling.
1. TheHERSIndexoftheENERGYSTARReferenceDesignHomeisfirstdetermined.
TheENERGYSTARReferenceDesignHomeissimilartothehomethatwillbebuilt,
exceptthatitisconfiguredwiththefeaturessummarizedinExhibit22.Notethat
anystateenergycoderequirementsthatexceedthosespecifiedinExhibit2take
precedenceforconfiguringtheENERGYSTARReferenceDesignHome.
2. CalculatetheSizeAdjustmentFactor(SAF)andENERGYSTARHERSIndexTarget.
3. Configurethepreferredsetofenergymeasuresfortheratedhomeandverifythat
theresultingHERSIndexmeetsorexceedstheENERGYSTARHERSIndexTarget.
4. ConstructthehomeusingmeasuresthatresultinaHERSIndexatorbelowthe
ENERGYSTARHERSIndexTarget,
5. VerifythatallrequirementshavebeenmetusingaRater.
LD
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ENERGYSTAR QUALIFIEDHOMES
HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLIST
SECTION4. DUCTLEAKAGE
4.1. TotalRater-measuredductleakage6CFM25per100sq.ft.ofconditioned
floorarea
4.2. Rater-measuredductleakagetooutdoors4CFM25per100sq.ft.of
conditionedfloorarea
4.3. Ductbootssealedtofloor,wall,orceilingusingcaulk,foam,mastictape,or
masticpaste
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Q
4 DUCTLEAKAGE
12 MEASUREDDUCTLEAKAGE
DETAIL4.213,14,15,
Ratermeasuredductleakagetooutdoors4CFM25
per100sq.ft.ofconditionedfloorarea
A. Sealallseams,gaps,andholesofalltrunkductconnections
beforeinstallinginsulation.Masticisrecommendedforsealing.B. Installinsulationwithoutmisalignment,compression,gaps,or
voidsaroundallconnectionsandexposedductwork.
C. Sealductinsulationinplace.Masticisrecommendedforsealing.
D. EPArecommendstestingductsonlyaftercompletingavisual
inspectionofproperductsealing.
Footnoteslocatedonfollowingpage.
Zone1 7 3.5
Zone2 7 3.5
Zone3 6 3.0
Zone4 6 3.0
Zone5 5 2.5
Zone6 5 2.5Zone7 5 2.5
DETAIL4.113,14,
TotalRatermeasuredductleakage6CFM25per100
sq.ft.ofconditionedfloorarea*
A. Sealallseams,gaps,andholesofalltrunkductconnections
beforeinstallinginsulation,preferablywithmastic.
B. Installinsulationwithoutmisalignments,compressions,gaps,or
voidsaroundallconnectionsandexposedductwork.
C. Sealductinsulationinplace.Masticisrecommendedforsealing.
D. EPArecommendstestingductsonlyaftercompletingavisual
inspectionofproperductsealing.
Footnoteslocatedonfollowingpage.
INFILTRATIONDuctleakagetestingcanbewaivedifallducts&airhandlingequipmentare
locatedwithinthehomesairandthermalbarriersANDenvelopeleakagehas
beentestedtobelessthanorequaltohalfoftheReferenceDesigninfiltration
limitfortheClimateZonewherethehomeistobebuilt.
MaxInfiltrationforReferenceDesignClimateZone WaivedDuctLeakage
ACH50ACH50
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HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLISTFOOTNOTES
13. DuctleakageshallbedeterminedanddocumentedbyaRaterusingaRESNET-
approvedtestingprotocolonlyafterallcomponentsofthesystemhavebeeninstalled
(e.g.,airhandlerandregistergrilles).Leakagelimitsshallbeassessedonaper-system,
ratherthanper-home,basis.Testingofductleakagetotheoutsidecanbewaivedifall
ducts&airhandlingequipmentarelocatedwithinthehomesairandthermalbarriers
ANDenvelopeleakagehasbeentestedtobelessthanorequaltohalfoftheprescriptive
pathinfiltrationlimitfortheClimateZonewherethehomeistobebuilt.
14. Forallhomesthathavelessthan1,200sq.ft.ofconditionedfloorarea(CFA),total
measuredductleakageshallbe8CFM25per100sq.ft.ofCFAandmeasuredduct
leakagetooutdoorsshallbe5CFM25per100sq.ft.ofCFA.
15. Iftotalductleakageis4CFM25per100sq.ft.ofconditionedfloorarea,or5
CFM25per100sq.ft.ofconditionedfloorareaforhomesthathavelessthan1,200sq.ft.
ofconditionedfloorarea,thenleakagetooutdoorsneednotbetested.
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4 DUCTLEAKAGE
3 DUCTBOOTSSEALEDTOFLOOR,WALL,ORCEILING
DETAIL4.3Ductbootssealedtofloor,wall,orceilingusingcaulk,
foam,mastictape,ormasticpaste
A. Sealallseams,gaps,andholesofallductbootstothefloor,wall,
orceiling,preferablywithmastic.
TRADES
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SEAL
A
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4 DUCTLEAKAGE
3 DUCTBOOTSSEALEDTOFLOOR,WALL,ORCEILING
Boottodrywallconnectionsealed.Boottodrywallconnection
notsealed.
Boottofloorconnectionsealed.Boottofloorconnection
notsealed.A. A.
LD LD
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HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLISTSECTION5. WHOLEBUILDINGDELIVEREDVENTILATION
5.1. Rater-measuredventilationrateiswithin100-120%ofHVACcontractor
designvalue(2.11)
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5 WHOLEBUILDINGDELIVEREDVENTILATION1 MEASUREDVENTILATIONRATEISWITHIN100120%OFHVACCONTRACTORDESIGNVALUES
DETAIL5.116
Ratermeasuredventilationrateiswithin100120%of
HVACcontractordesignvalue(2.11)
EPArequiresaventilationsystemthatmeetsASHRAE62.2-2010and
sealingallholes,gaps,andseamsofductsandtheirconnections
including:
A. Supply(suchasanintakeducttothereturnsideoftheHVAC
systemcoupledwithamotorizeddamperandcontrolsystem).
B. Exhaust(suchasacontinuouslyoperatingexhaustfan).
C. Balanced(suchasanERVorHRV).
FOOTNOTES
16. Thewhole-houseventilationairflowandlocalexhaustair
flowsshallbemeasuredbytheRaterusingaflowhood,flowgrid,
anemometer(inaccordancewithAABC,NEBBorASHRAEprocedures),
orsubstantiallyequivalentmethod.
HOUSE
DedicatedSupply
AirLeak
age
AirLeakage
AirLeakage
HOUSE
AirLea
kage
AirLeakage
AirLeakage
HOUSE
DedicatedSupply
DedicatedExhaust
DedicatedExhaust
AirLeakage
A.
B.
C.
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5 WHOLEBUILDINGDELIVEREDVENTILATION1 MEASUREDVENTILATIONRATEISWITHIN100120%OFHVACCONTRACTORDESIGNVALUES
LD LD
Ventilationtiedinto Ventilationtiedintothereturnwith
thereturnwithouta amechanicaldamper.
mechanicaldamper.
GOODPICOFPROPERLY
INSTALLEDERV/HRV
Revision 02
C. ProperlyinstalledERV/HRV. ProperlyinstalledERV/HRV.
A.
Exhaustfaninstalledbut Inlineexhaustventilationinstalled.B.inwrongdirectioncausing
excessivebendandductis
uninsulated.
TESTINGVENTILATIONRATE
TheHVACContractorandtheRatercancalculatetheASHRAE62.2-2010
ventilationrateusingthisformula:
(7.5CFM)*(NumberofBedrooms+1)+(0.01CFM)*(SquareFootageoftheConditionedSpace)=VentilationRateinCFM
TheHVACcontractormustattachdocumentationshowingtheventilation
systemtype,location,anddesignratetotheHVACSystemQuality
InstallationContractorChecklist.
TheRatermustuseaflowhood,flowgrid,anemometer,oranother
substantiallyequivalentmethodtotesttheventilation.
TestingmustbeinaccordancewithAABC,NEBB,orASHRAEprocedures.
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HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLISTSECTION6. CONTROLS
6.1. AirflowisproducedwhencentralHVACfanisenergized(setthermostatto
fan)
6.2. Coolairflowisproducedwhenthecoolingcycleisenergized(setthermostat
tocool)
6.3. Heatedairflowisproducedwhentheheatingcycleisenergized(set
thermostattoheat)
6.4. Continuously-operatingventilationandexhaustfansincludereadily
accessibleoverridecontrols
6.5. Ventilationcontrolslabeled,unlessfunctionisobvious(e.g.,bathroom
exhaustfan)
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6 CONTROLS
13 THERMOSTATCONTROLS
DETAIL6.1
AirflowisproducedwhencentralHVACfanisenergized
(setthermostattofan)
A. Turnthefanonatthethermostat.
B. Resetthethermostattotheoriginalsettingsbeforecontinuing.
DETAIL6.217
Coolairflowisproducedwhenthecoolingcycleis
energized(setthermostattocool)
D. Turnthesystemontocoolandchangethesetpointtemperature
to3degreesbelowtheambienttemperature.
E. Resetthethermostattotheoriginalsettingsbeforecontinuing.
F. Ifthesystemdoesnothaveairconditioning,thisitemdoesnot
needtobeverified.
A&B
D&E,
G&H
D
G
SYSTEMOUTPUTTEMPERATURE
Ratersshouldverifythattheheatingandcoolingsystemsareworkingproperlyby
measuringtheoutputtemperatureofthesystems.DETAIL6.317
Heatedairflowisproducedwhentheheatingcycleis
energized(setthermostattoheat)
G. Turnthesystemontoheatandchangethesetpointtemperature
to3degreesabovetheambienttemperature.
H. Resetthethermostattotheoriginalsettingsbeforecontinuing.
FOOTNOTES
17. IncaseswherethecondenserunitisinstalledafterthetimeofinspectionbytheRater,theRaterisexemptfromverifyingitem6.2whenthecondenserisforanACunit
andalsoitem6.3whenthecondenserisforaheatpumpunit.
SystemType Heating Cooling
AirConditioner
Boiler
ElectricResistance
HeatPump
NaturalGasFurnace
OilFurnace
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6 CONTROLS
4 CONTINUOUSLYOPERATINGVENTILATION&EXHAUSTFANSINCLUDEOVERRIDECONTROLS
DETAIL6.4
Continuouslyoperatingventilationandexhaustfans
includereadilyaccessibleoverridecontrols
A. Installcontinuouslyoperatingventilationandexhaustfansthat
haveoverridecontrolaccessories.
B. Installoverridecontrolsforallfansinaneasilyaccessiblelocation.
OVERRIDECONTROLLOCATIONItisimportantforHVACContractorsandelectricianstolocatethe
overridecontrolsforcontinuouslyoperatingventilationandexhaust
fansinalocationeasilyaccessibletothehomeowner.Itisalso
importanttoproperlylabelthesecontrols.Ifcontrolsarenotproperly
labeled,fansmaybemistakenlyturnedoff.
OverrideControlLocationRecommendations:
Locatethelabeledcontrolnearthethermostat,creatingacontrol
centerforthehomeowner.Thisallowsthehomeownertoaccess
themajorityoftheHVACsystemcontrolsinoneplace.Thissetupisidealforventilationsystems,suchasERVsandHRVs,thatmaybe
locatedininaccessibleplaces.
Locateaswitchontheelectricalpanelwithalabel.Thisprevents
accidentalturnoffoffansandalsoprovidesoneswitchforall
fans.Thissetupisidealforahousethathasmultiplecontinuously
runningexhaustfans.
Somebathexhaustfanshaveinternaloverridesystems,eitheron
theelectricalswitchplateordefinedinthemanufacturersmanual.
Theseexhaustfansmeettherequirementaslongastheoverrideisaccessible.
TRADES
ELECTRICIAN
HVAC
B
Thermo
stat
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6 CONTROLS4 CONTINUOUSLYOPERATINGVENTILATION&EXHAUSTFANSINCLUDEOVERRIDECONTROLS
BADPICOFEQUIPMENTINSTALLEDWITHOUT
GOODPICOFEQUIPMENTOVERRIDECONTROL BADPICOFBADLOCATION
INSTALLEDWITHOVERRIDEOPTIONS?ORPICOF FOROVERRIDEEQUIP.
CONTROLOPTIONSEQUIPMENTINSTALLED
WITHOUTIT?
LD LD
A. B.
Overridecontrolswitchescentrallylocatednearthermostatforeaseof
access.
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6 CONTROLS
5 CONTROLSLABELED,UNLESSFUNCTIONISOBVIOUSE.G.,BATHROOMEXHAUSTFAN
DETAIL6.5
Ventilationcontrolslabeled,unlessfunctionisobvious(e.g.,bathroomexhaustfan)
A. Installcontrolsthataredifferentiatedorlabeledbythe
manufacturer.
B. Ifmanufacturerlabeledcontrolsdonotexist,installpermanent
labelstoindicatethefunctionofthecontrol.
TRADES
ELECTRICIAN
HVAC
B
FAN
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6 CONTROLS5 CONTROLSLABELED,UNLESSFUNCTIONISOBVIOUSE.G.,BATHROOMEXHAUSTFAN
Manufacturerlabeledcontrols.Controlsarenotlabeled.Manufacturerlabeledventilationswitch.
Ventilationisnotlabeled.A. A.
LD LD
LD
Ventilationisnotlabeled. InstallerpermanentlylabeledB.ventilationswitch.
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HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLISTSECTION7. VENTILATIONAIRINLETS&VENTILATIONSOURCE
7.1. Allventilationairinletslocated10ft.ofstretched-stringdistancefromknowncontaminationsourcessuchasstack,vent,exhausthood,orvehicle
exhaust.Exception:ventilationairinletsinthewall3ft.fromdryer
exhaustsandcontaminationsourcesexitingthroughtheroof
7.2. Ventilationairinlets2ft.abovegradeorroofdeckinClimateZones1-3or4ft.abovegradeorroofdeckinClimateZones4-8andnotobstructedbysnow,plantings,condensingunitsorothermaterialattimeofinspection
7.3. Ventilationairinletsprovidedwithrodent/insectscreenwith0.5inch
mesh
7.4. Ventilationaircomesdirectlyfromoutdoorsandnotfromadjacentdwelling
units,garages,crawlspaces,orattics
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7 VENTILATIONAIRINLETS&VENTILATIONSOURCE1 AIRINLETSLOCATEDAWAYFROMCONTAMINATIONSOURCES
DETAIL7.118
Allventilationairinletslocated10ft.ofstretched
stringdistancefromknowncontaminationsourcessuchasstack,vent,exhausthood,orvehicleexhaust.
Exception:ventilationairinletsinthewall3ft.from
dryerexhaustsandcontaminationsourcesexiting
throughtheroof
A. Verifylocationsofallcontaminationsourceterminations.
B. Installairinletsatleast10ft.awayfromallcontaminationsource
terminations.
C. Installairinletsatleast3ft.awayfromdryerexhaustsand
contaminationsourcesexitingthroughtheroof.
FOOTNOTES
18. Theoutletandinletofbalancedventilationsystemsshallmeet
thesespacingrequirementsunlessmanufacturerinstructionsindicate
thatasmallerdistancemaybeused.However,ifthisoccursthe
manufacturer'sinstructionsshallbecollectedfordocumentation
purposes.
B&C
TRADES
HVAC
FRAMER
PLUMBER
ELECTRICIAN
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7 VENTILATIONAIRINLETS&VENTILATIONSOURCE2 VENTILATIONAIRINLETSLOCATEDABOVEGRADEORROOFDECK
LD LD
Ventilationinletdoesnot Ventilationinletisnotnearany C. Ventilationinletistooclose VentilationinletisappropriatelyB. terminatehighenough exhaustoutlets/contamination tothegroundandisbeing locatedabovegrade. abovetheroofdeck. sourcesandisatleast2ft.above blockedbythegrass.
theroofdeck.
AIRINLETINSTALLATIONTIPS
Itiseasiertoinstallanairinletatthegableendofthehousethantotrytoliftitofftheroof2-4feet.
InteractiveMap: http://energycode.pnl.gov/EnergyCodeReqs /
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7 VENTILATIONAIRINLETS&VENTILATIONSOURCE
3 VENTILATIONAIRINLETSPROVIDEDWITHMESHRODENT/INSECTSCREEN
DETAIL7.319
Ventilationairinletsprovidedwithrodent/insect
screenwith0.5inchmesh
A. Installrodent/insectscreenonallairinlets.
B. EPArecommendsinstallingtheairinletinanaccessiblelocation
thatallowsforcleaningthescreen.
FOOTNOTES
19. Withoutpropermaintenance,ventilationairinletscreensoften
becomefilledwithdebris.Therefore,EPArecommends,butdoesnot
require,thattheseventilationairinletsbelocatedsoastofacilitate
accessandregularservicebytheowner.
TRADES
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A
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7 VENTILATIONAIRINLETS&VENTILATIONSOURCE3 VENTILATIONAIRINLETSPROVIDEDWITHMESHRODENT/INSECTSCREEN
A. Meshscreenisspaced Meshscreeniscorrectlyinstalled Meshscreenisspaced MeshscreeniscorrectlyinstalledA.widerthan0.5"allowing andgapsarelessthan0.5". widerthan0.5"allowing andgapsaresmallerlessthan0.5".insectstoenter. insectstoenter.
Revision 02
B. Airinletisnotconvenient Airinletislocatedinaconvenientforcleaningandlocated placeforhomeownertoclean.
nexttoexhaustoutlets.
LD
LD
BADPICOFAIRINLET
WITHOUTASCREEN
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HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLISTSECTION8. LOCALMECHANICALEXHAUST
Ineachkitchenandbathroom,systeminstalledthatexhaustsdirectlytothe
outdoorsandmeetsoneofthefollowingRater-measuredairflowstandards:
8.1. KitchenContinuousRate:5ACH,basedonkitchenvolume*
KitchenIntermittentRate:100CFM
8.2. BathroomContinuousRate:20CFM*
BathroomIntermittentRate:50CFM
8.3. Iffanssharecommonexhaustduct,back-draftdampersinstalled
8.4. Commonexhaustductnotsharedbyfansinseparatedwellings
8.5. Clothesdryersventeddirectlytooutdoors,exceptforventlessdryers
equippedwithacondensatedrain
*Fansusedatcontinuousratemustberatedforcontinuoususe. ForadditionalinformationandspecificducttestingprotocolspleaserefertoRESNETChapter8(StandardforPerformanceTestingandWorkScope:EnclosureandAirDistributionLeakageTesting).
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1 KITCHEN
DETAIL8.116,20,21
Ineachkitchenandbathroom,systeminstalledthat
exhaustsdirectlytotheoutdoorsandmeetsoneofthefollowingRatermeasuredairflowstandards:*
Continuous rate is 5 ACH, based on kitchen volume 23
A. EPArecommendsselectingafanthatprovidesmorethan5air
changesperhour(ACH)inordertopulltherequiredamount.
Intermittent rate is 100 CFM 22,24
B. EPArecommendsselectingafanwitharatingof150-200CFMto
pullatleast100CFMwhenmeasured.
Continuous and Intermittent
C. Installthefantodirectlyexhausttotheoutdoorsthrougha
terminationwithlittleornorestriction.
D. Sealallseams,gaps,holes,andconnectionstotheexteriorofall
ventilationducts,preferablywithmastic.
E. EPArecommendstestingthekitchenfanaftercompletinga
visualinspectionofproperductsealing.
* Allkitchenfansmustcomplywitheitherthecontinuousorintermittentrate.
Footnoteslocatedonfollowingpage.
KITCHENFANRATING
Kitchenfansaretypicallyratedbyhowmanycubicfeetperminute(CFM)thefan
willexhaustinafactorysetting.Ductwork,terminationchoicesandinstallation
maydecreasethemeasuredCFMbelowthefactory-ratedCFM.
ToensuretheinstalledfanexhauststhecorrectamountofCFM,EPArecommends
theHVACContractortoinstallafanwitharatinghigherthantherequired
measuredamount.
ADDITIONALINFORMATION
Foradditionalinformationandspecificducttestingprotocolspleasereferto
RESNETChapter8(StandardforPerformanceTestingandWorkScope:EnclosureandAirDistributionLeakageTesting).
TRADES
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A&B
C
&D
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1 KITCHEN
LD LD
CFMratingmaynot FanCFMratingishigherthan Recirculatingfaninstalled ExhaustfanhasterminatestotheA./B. C.meettheperformance therequirementincreasingthe thatdoesnotexhaustto outside. specificationonce likelihoodthatitwillmeetthe outside.
installed. performancelevelonceinstalled.
KITCHENFANSELECTION
TocalculatetheCFMrequirementofthekitchenfanforcontinuousrate,use
theequationbelow:
RequiredCFM=(5ACH)*(KitchenVolume)/(60minutes)
Ifintermittentfanflowrateofatleast100CFMislessthan5ACH,basedon
kitchenvolume,thenaventedrangehoodisrequired.
KITCHENFANTESTINGTIPS
Testthekitchenfanaftercompletingavisualinspectionofproperfan
installation.
Verifythekitchenfanissettoexhaustinsteadofrecirculate.
Useaflowhood,flowgrid,anemometer(inaccordancewithAABC,NEBB,
orASHRAEprocedures),orotherequivalentmethodtotestthefan.
Revision 02
Exhaustductworkandpenetration
totheexteriorhavebeensealed
withmastic.
Exhaustductworkand
penetrationtotheexterior
havenotbeensealed.
D.
LD
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HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLISTFOOTNOTES
16. Thewhole-houseventilationairflowandlocalexhaustairflowsshallbemeasuredbytheRaterusingaflowhood,flowgrid,anemometer(inaccordancewithAABC,NEBB
orASHRAEprocedures),orsubstantiallyequivalentmethod.
20. PerASHRAE62.2-2010,anexhaustsystemisoneormorefansthatremoveairfrom
thebuilding,causingoutdoorairtoenterbyventilationinletsornormalleakagepaths
throughthebuildingenvelope.Examplesincludebathexhaustfans,rangehoods,and
clothesdryers.
21. PerASHRAE62.2-2010,abathroomisanyroomcontainingabathtub,shower,spa,or
similarsourceofmoisture.
22. Anintermittentmechanicalexhaustsystem,whereprovided,shallbedesignedtooperateasneededbytheoccupant.Controldevicesshallnotimpedeoccupantcontrol
inintermittentsystems.
23. Kitchenvolumeshallbedeterminedbydrawingthesmallestpossiblerectangle
onthefloorplanthatencompassesallcabinets,pantries,islands,andpeninsulasand
multiplyingbytheaverageceilingheightforthisarea.Cabinetvolumeshallbeincluded
inthekitchenvolumecalculation.
24. Iftheflowrateoftheselectedexhaustfanislessthan5ACH,basedonkitchen
volume,thenaventedrangehoodorappliance-rangehoodcombinationisrequired
ratherthanaremotefanthatisnotintegraltotherange.Also,forintermittentkitchen
exhaustfansthatareintegratedwithmicrowaves,aratedairflowratethatis200CFMmaybeusedinlieuofmeasuringtheactualairflowrate.
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2 BATHROOM
DETAIL8.216,20,21
Ineachbathroom,systeminstalledthatexhausts
directlytotheoutdoorsandmeetsoneofthesemeasuredairflowstandards:*
Continuous rate is 20 CFM
A. EPArecommendsselectingafanwitharatingof50CFMtopullat
least20CFMwhenmeasured.
Intermittent rate is 50 CFM 22
B. EPArecommendsselectingafanwitharatingof70CFMtopullat
least50CFMwhenmeasured.
Continuous and Intermittent
C. Installthefantodirectlyexhausttotheoutdoorsthrougha
terminationwithlittleornorestriction.
D. Sealallseams,gaps,holes,andconnectionstoexteriorofall
ventilationducts,preferablywithmastic.
E. EPArecommendscompletingavisualinspectionofproperfan
installation,priortotestingthefan.
* Allbathroomfansmustcomplywiththecontinuousorintermittentrate.
Footnoteslocatedonfollowingpage.
BATHROOMFANRATING
Abathroomisanyroomcontainingabathtub,shower,spa,orsimilarsourceofmoisture.
Bathroomfansaretypicallyratedbyhowmanycubicfeetperminute(CFM)thefanwillexhaustinafactorysetting.Ductwork,terminationchoicesandinstallationmay
decreasethemeasuredCFMbelowthefactory-ratedCFM.
ToensuretheinstalledfanexhauststhecorrectamountofCFM,EPArecommendsinstallingafanwitharatinghigherthantherequiredmeasuredamount.
ADDITIONALINFORMATION
ForadditionalinformationandspecificducttestingprotocolspleaserefertoRESNET
Chapter8(StandardforPerformanceTestingandWorkScope:EnclosureandAirDistributionLeakageTesting).
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C
A&B
D
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2 BATHROOM
CFMratingmaynotmeettheperformance
specificationonce
installed.
A/B.
LD
LD
Revision 02
Exhaustductonly
mechanicallyfastenedand
notsealed.
D.
FanCFMratingishigherthantherequirementincreasingthe
likelihoodthatitwillmeetthe
performancelevelonceinstalled.
Exhaustducthasbeen
mechanicallyfastenedandsealed
withmastic.
LD
Twoexhaustterminations, ExhausthasbeenproperlyC. joinedinaroughlycuthole installed,sealed,andterminatestorestrictiveholeandnotair outdoors.
sealed.
BATHROOMFANTESTINGTIPS
Testthebathroomfanaftercompletingavisualinspectionofproperfan
installation.
Sealbathfanstothedrywall,includingconditionedareas.Thiswill
ensureairisexhaustedfromthebathroomandnottheplenum.
Useaflowhood,flowgrid,anemometer(inaccordancewithAABC,NEBB
orASHRAEprocedures)orotherequivalentmethodtotestthefan.
Verifythatthecontroldevicesofthebathroomfandonotimpedeoccupantcontrol.
If the fan is not pulling enough:
Verifytheexteriorterminationisoperatingproperly.
Verifythefandamperswingsfreelyandpackingtapeisremoved.
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HVACSYSTEMQUALITYINSTALLATIONRATERCHECKLISTFOOTNOTES
16. Thewhole-houseventilationairflowandlocalexhaustairflowsshallbemeasuredbytheRaterusingaflowhood,flowgrid,anemometer(inaccordancewithAABC,NEBB
orASHRAEprocedures),orsubstantiallyequivalentmethod.
20. PerASHRAE62.2-2010,anexhaustsystemisoneormorefansthatremoveairfrom
thebuilding,causingoutdoorairtoenterbyventilationinletsornormalleakagepaths
throughthebuildingenvelope.Examplesincludebathexhaustfans,rangehoods,and
clothesdryers.
21. PerASHRAE62.2-2010,abathroomisanyroomcontainingabathtub,shower,spa,or
similarsourceofmoisture.
22. Anintermittentmechanicalexhaustsystem,whereprovided,shallbedesignedtooperateasneededbytheoccupant.Controldevicesshallnotimpedeoccupantcontrol
inintermittentsystems.
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34 COMMONEXHAUSTDUCTS
DETAIL8.3
Iffanssharecommonexhaustduct,backdraftdampers
installedA. Installback-draftdampersonallfanssharingacommonexhaust
duct.
B. Removeallpackingtapefromback-draftdampers.
DETAIL8.425
Commonexhaustductnotsharedbyfansinseparate
dwellingsC. Installseparateexhaustductsforseparateunits.
If fans from separate dwellings do share a common exhaust duct, one
of the following must apply:
D. ThefansmustruncontinuouslyOR
E. Eachoutletmusthaveaback-draftdampertopreventcross-
contaminationwhenthefanisnotrunning.
FOOTNOTES
25. Exhaustoutletsfrommorethanonedwellingunitmaybeserved
byasingleexhaustfanifthefanrunscontinuouslyorifeachoutlethas
aback-draftdampertopreventcross-contaminationwhenthefanis
notrunning.
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A,B&E
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34 COMMONEXHAUSTDUCTS
Fansharesexhaustand Fansharesexhaustandhasaback- B. Back-draftdamperstill PackingtapehasbeenremovedA. doesnothaveaback-draft draftdamperinstalled. hasapieceoftapethat anddamperwillbeabletofunctiondamperinstalled. preventeditfromrattling properlyoncefanisinstalled.
duringshipping.
Revision 02
C. Fansfromseparate Separatedwellingswiththeirowndwellingsexhausted separateexhaustterminations.
togetherwithoutback-draftdampersandnotsealed.
BADPICOFSHAREDEXHAUSTDUCTBETWEEN
DWELLINGS
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5 CLOTHESDRYERSVENTEDDIRECTLYTOOUTDOORS
Dryerventsdirectlytotheoutdoors.
Dryerexhaustlineterminatesinthe
crawlspace.
Dryerventsdirectlytotheoutdoors.
Dryerventisrunverticalwitha90degreebend
anddoesnotventtothe
outside.
A. A.
GOODPICOFDRYER
VENTEDTOTHEEXTERIOR
LD LD
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13 SUPPLY&EXHAUSTFANS
DETAIL9.126,
Intermittentsupply&exhaustfansratedat400CFMA. Installfansratedbythemanufacturerat3sonesorless.
B. Ifthefanhasaratedflowequaltoorabove400CFM,the
requirementdescribedinAdoesnotapply.
DETAIL9.226,
Continuoussupply&exhaustfansratedat500CFM
InstallENERGYSTARqualifiedfansifthefans:
D. Arepartofawhole-housemechanicalventilationsystem
E. Haveaflowratelessthan500CFM
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A-C
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