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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 Eneray Code(WSEC)and ACCA Manuals <br /> J and S.This calculator will calculate heating loads only.ACCA procedures for sizing cooling systems should be used to determine cooling 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 0.30. <br /> 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,some <br /> 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 <br /> (360)956-2042 for assistance. <br /> Project Information Contact Information <br /> Addition Lori King <br /> 2005 Virginia Ave. <br /> Everett,WA 98201 <br /> Heating System Type: OO All Other systems O Heat Pump <br /> To see detailed instructions for each section,place your cursor on the word'Instructions". <br /> Desion Temperature <br /> instructionsDesign Temperature Difference(AT) 47 <br /> Everett]11 C AT=Indoor(70 degrees)-Outdoor Design Temp <br /> i <br /> Area of Building <br /> Conditioned Floor Area <br /> Instructions Conditioned Floor Area(sq ft) 594 <br /> Average Ceiling Height Conditioned Volume <br /> Instructions Average Ceiling Height(ft) 8.0 4,752 <br /> Glazing and Doors U-Factor X Area - UA <br /> Instructions <br /> 0.30 109 32.70 <br /> Skylights U-Factor X Area - UA <br /> Instructions 0.50 <br /> Insulation <br /> Attic U-Factor X Area - UA <br /> Instructions <br /> R-49 . 0.026 594 15.44 <br /> Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA <br /> Instructions <br /> No Vaulted Ceilings in this project. <br /> Above Grade Walls(see Figure 1) U-Factor X Area UA <br /> Instructions R-21luteimediate 0.056 717 40.15 <br /> Floors U-Factor X Area UA <br /> Instructions R-38 0.025 594 14.85 <br /> � <br /> Below Grade Walls(see Figure 1) U-Factor X Area UA <br /> Instructions <br /> 0 <br /> No Belovv Grade Walls in this protect � "''-- <br /> n.;awa,m.,,»�o,,.,, ... o,,.w�• . <br /> Slab Below Grade(see Figure 1) F-Factor X Length UA <br /> Insfructions -z�.��— - ...: ...,..::,,,,�,�� <br /> No Slab Below Grade in this project. <br /> �-I��,,�1.1%,Rgmmmmmklomi$umm, om- <br /> Slab on Grade(see Figure 1) F-Factor X Length UA <br /> Instructions <br /> No Slab on Grade in this project. � <br /> Location of Ducts <br /> Incl tE.a crjs __ __— Duct Leakage Coefficient <br /> Unconditioned Space <br /> n ... ° 1.10 <br /> Sum of UA 103.15 <br /> Envelope Heat Load 4,848 Btu/Hour <br /> Figure 1. Sum of UA XAT <br /> Air Leakage Heat Load 2,412 Btu/Hour <br /> ,•. Voluni 0.6 X AT X.018 <br /> Above Grade Building Design Heat Load 7,260 Btu/Hour <br /> Air Leakage+Envelope Heat Loss <br /> ` Building and Duct Heat Load 7,986 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 11,180 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 /> ..1 <br />