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r Simple Heating System Size: Washington State This heating system sizing calculator is based on the Prescriptive Requirements of the 2015 Washington State Energy Code(WSEC)and ACCA Manuals J and S.This calculator will calculate heating loads only.ACCA procedures for sizing cooling systems should be used to determine cooling loads. 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, 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 Program at(360)956-2042 for assistance. Project Information Contact Information Bjella Residence Bill Gaughren 360-620-8894 Heating System Type: All Other Systems O4eat Pump To see detailed instructions for each section,place your cursor on the word"Instructions". Design Temperature InstructionsDesign Temperature Difference(AT) 47 �Everett IC 1..,;;,,,t411 dT=Indoor(70 degrees)-Outdoor Design Temp Area of Building Conditioned Floor Area Instructions Conditioned Floor Area(sq ft) 2,209 Average Ceiling Height Conditioned Volume Instructions Average Ceiling Height(ft) 8.5 18,777 Glazing and Doors U-Factor X Area = UA Instructions select u-Factor . No selection 346 Skylights U-Factor X Area = UA Instructions 0.50 Insulation Attic U-Factor X Area = UA Instructions R-49 . :: 0.026 1,174 30.52 Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA Instructions €. b., Select R-Value . ,:•. No selection --- Above Grade Walls(see Figure ll U-Factor X Area UA Instructions R-21lntermediate . 0.056 2,314 129.58 Floors U-Factor X Area UA Instructions R 38 0.025 ",150 3.75 ..0 <*; ; Below Grade Walls(see Figure 1) U-Factor X Area UA Instructions ' Select R value . No selection --- i st a.,�•`' •.Z;;»r''''F a;R d rY ivT,, r s'ua2mmdat.C' Slab Below Grade(see Figure 1) F-Factor X Len UA Instructions ._. '-: [Select conditioning No selection --- Slab on Grade(see Figure 1) F-Factor X Length UA Instructions t R-10 Fully Insulated 7 $' 0.360 1,099 395.64 Location of Ducts Instructions �, ........_. __......._ __._..._.. ......._ Duct Leakage Coefficient �� Unconditioned Space . 1.10 Sum of UA 559.50 Envelope Heat Load 26,296 Btu/Hour Figure 1. Sum of UAX AT , ,,,,„,,, Air Leakage Heat Load 9,531 Btu/Hour VolumeX 0.6X ATX.018 AboveG a Building Design Heat Load 35,827 Btu/Hour ;"7": Air Leakage+Envelope Heat Loss p Building and Duct Heat Load 39,410 Btu/Hour Ducts in unconditioned space:Sum of Building Heat Loss X 1.10 Ducts in conditioned space:Sum of Building Heat Loss X 1 Maximum Heat Equipment Output 55,174 Btu/Hour Building and Duct Heat LdX 1.40 for Forced Air Furnace Building and Duct Heat Loss 1.25 for Heat Pump (3 /� (07/01/13)