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Simple Heating System Size: Washington State <br /> This heating system sizing calculator is based on the Prescriptive Requirements of the 2015 Washington State Energy Code(WSEC)and ACCA <br /> Manuals J and S.This calculator will calculate heating loads only.ACCA procedures for sizing cooling systems should be used to determine cooling <br /> loads. <br /> The glazing(window)and door portion of this calculator assumes the installed glazing and door products have an area weighted average U-factor of <br /> 0.30. The incorporated insulation requirements are the minimum prescriptive amounts specified by the 2015 WSEC. <br /> Please fill out all of the green drop-downs and boxes that are applicable to your project.As you make selections in the drop-downs for each section, <br /> some values will be calculated for you.If you do not see the selection you need in the drop-down options,please call the WSU Energy Extension <br /> Program at(360)956-2042 for assistance. <br /> Project Information Contact Information <br /> New Residence. Tatyana Shadyrya <br /> 4909 Narbeck RD 22420 6th PI W,Bothel,WA <br /> Everett,WA 98204 Archstudio"Y.Shadyrya" <br /> Heating System Type: 0 All Other Systems 0 Heat Pump <br /> To see detailed instructions for each section.place your cursor on the word"Instructions". <br /> Design Temperature <br /> .,...mW,, Everett 1C ...: .... - � <br /> Design Temperature Difference(AT) 47 <br /> AT,-Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building <br /> Conditioned Floor Area <br /> Conditioned Floor Area(sq ft) 4,246 <br /> Average Ceiling Height Conditioned Volume <br /> Average Ceiling Height(ft) 8.7 36,813 <br /> Glazing and Doors U-Factor X Area = UA <br /> 0.30 831 249.15 <br /> Skylights U-Factor X Area = UA <br /> 0.50 0 <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> Select.. Value ..i <br /> No selection 0 --- <br /> ,... .::,a��,�.�.. ,. .:.����- ._.. �. 'Fay' <br /> Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA <br /> 1 a=t'kttc«i a-save Vented . 0.027 ( 1,920 51.84 <br /> aA .w> <br /> Above Grade Walls(see Fioure n U-Factor X Area UA <br /> 0.056 4,070 227.92 <br /> R-21 Intermediate �(N:.. <br /> Floors U-Factor X Area UA <br /> R 8 �I;. 0.025 1,300 32.50 <br /> Below Grade Walls(see Figure 1) U-Factor X Area UA <br /> R 21 Interior .I:'s 0.042 210 8.82 <br /> Slab Below Grade(see Fioure n F-Factor X Len•th UA <br /> structic ns 0.570 60 34.20 <br /> R-5 Thermal Break at slab edge r <br /> Slab on Grade(see Fioure n F-Factor X Length UA <br /> R 1oFullyInsulated V I 0.360 I 100 36.00 <br /> Location of Ducts <br /> Duct Leakage Coefficient <br /> Unconditioned Space 1.10 <br /> Sum of UA 640.43 <br /> Envelope Heat Load 30,100 Btu/Hour <br /> Figure 1. Sum of UAX AT <br /> Air Leakage Heat Load 18.686 Btu/Hour <br /> „�..F Volume 0.6X 1TX.018 <br /> 1 AboveGrade , Building Design Heat Load 48,786 Btu/Hour <br /> -\v. a Air Leakage-0-Envelope Heat Loss <br /> gVi <br /> Building and Duct Heat Load 53,665 Btu/Hour <br /> Ducts in unconditioned space:Sum of Building Heat Loss X 1.10 <br /> Ducts in conditioned space:Sum of Building Heat Loss X 1 <br /> Maximum Heat Equipment Output 67,081 Btu/Hour <br /> Building and Duct Heat Loss X 1.40 for Forced Air Furnace <br /> Building and Duct Heat Loss X 1.25 for Heat Pump <br /> 3 (07/01/13) <br />