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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 /> DeLeon Resid Fire Repair GK Structural Engineering,LLC <br /> 6610 Gateway Terrace 14703 1.st Lane NE,Ste 205 <br /> Everett,WA 98203 Duvall,WA 98019 <br /> Heating System Type: C hii Other Systems Qieat Pump <br /> To see detailed instructions for each section,place your cursor on the word"Instructions". <br /> Design Temperature <br /> Design Temperature Difference(AT) 47 <br /> Everett JC <br /> AT=Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building <br /> Conditioned Floor Area <br /> Conditioned Floor Area(sq ft) 1,562 <br /> Average Ceiling Height Conditioned Volume <br /> Instructions Average Ceiling Height(ft) 8.1 12,652 <br /> Glazing and Doors U-Factor X Area = UA <br /> instructions <br /> 0.30 310 92.88 <br /> Skylights U-Factor X Area = UA <br /> Instructions 0.50 8 4.00 <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> v' 0.026 1,130 29.38 <br /> Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA <br /> i.ictions Select R-Value . No selection --- <br /> Above Grade Walls(see Figure 1) U-Factor X Area UA PeD- ' -" -' <br /> R-21 IntermediateV I i 0.056 2,758 154.45 X..120cy <br /> Floors U-Factor X Area UA <br /> 5-30 v I 0.029 553 16.04 <br /> Below Grade Walls(see Figure 1) _ U-Factor X Area UA <br /> Instructions Select R-value . No selection --- <br /> Slab Below Grade(see Figure 1) F-Factor X Lenth UA <br /> Instructions rug 1 <br /> Select conditioning w No selection --- <br /> Slab on Grade(see Figure 1) F-Factor X Length UA <br /> Instructions • <br /> R-10 Peihneter 0.540 100 53.73 <br /> Location of Ducts <br /> Instructions Duct Leakage Coefficient <br /> Conditioned Space V <br /> 1.00 <br /> Sum of UA 350.48 <br /> Envelope Heat Load 16,472 Btu/Hour <br /> Figure 1. Sum ofUAXAT <br /> Air Leakage Heat Load 6,422 Btu/Hour <br /> Volume 0.6 XAT X.018 <br /> Above Grade Building Design Heat Load 22,895 Btu/Hour <br /> Air Leakage+Envelope Heat Loss <br /> Below Grade _ <br /> Building and Duct Heat Load 22,895 Btu/Hour <br /> Ducts in unconditioned space.Sum of Building Heat Loss X 1.10 C/ <br /> Ducts in conditioned space:Sum of Building Heat Loss X 1 ✓1 <br /> Maximum Heat Equipment Output 32,052 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 /> (07/01/13) <br />