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Simple heating System Size: wasnington btate <br />This heating system sizing calculator is based on the Prescriptive Requirements of the 2015 Washington State Energy Code (WSEC) and <br />ACCA Manuals J and S. This calculator will calculate heating loads only. ACCA procedures for sizing cooling systems should be used to <br />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- <br />factor of 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 <br />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 <br />Extension Program at (360) 956-2042 for assistance. <br />Project Information Contact Information <br />MEHRSADEH RESIDENCE BROOKES DESIGN <br />1700 ENGLAND AVE 38227 188TH AVE SW <br />EVERETT, WA98206 JAURBURN, WA98092 <br />Heating System Type: All other systems Q Heat Pump <br />To see detailed instructions foreach section, place yourcursoron the word "Instructions". <br />Design Temperature <br />Instructs o" Design Temperature Difference (AT) 49 <br />Everett Paine A F B pT = l door (70degrees) - Outdoor Design Temp <br />Area of Building <br />Conditioned Floor Area <br />Instructions Conditioned Floor Area (sq ft) <br />365 <br />Average Ceiling Height <br />Conditioned Volume <br />Instructions Average Ceiling Height (ft) <br />8.0 2,920 <br />Glazing and Doors <br />U-Factor X Area = <br />UA <br />1-4r uctions <br />0.30 105 <br />31.50 <br />Skylights <br />U-Factor X Area = <br />UA <br />4 .tructions <br />0.50 <br />--- <br />Insulation <br />Attic <br />U-Factor X Area = <br />UA <br />Instructio- 6J Select R-Value <br />Lil- No selection <br />Single Rafter or Joist Vaulted Ceilings <br />U-Factor X Area <br />UA <br />Instructions R-38 Vented <br />0.027 365 <br />9.86 <br />Ih�= <br />Above Grade Walls (see Figure 1) <br />U-Factor X Area <br />UA <br />Instructions <br />R-21 Intermediate <br />0.056 386 <br />21.62 <br />Floors <br />U-Factor X Area <br />UA <br />Instructions Select R-Value <br />No selection 0 <br />--- <br />Below Grade Walls tee Fig 1) <br />U-Factor X Area <br />UA <br />Instructions Select R-value <br />No selection 0 <br />--- <br />Slab Below Grade ).ee F,;,il 1) <br />F-Factor X Length <br />UA <br />Instructions Select conditioning <br />Eli No selection 0 <br />--- <br />Slab on Grade (see Figure i) <br />F-Factor X Length <br />UA <br />Instr°Cti— Select R-Value <br />EllNo selection 0 <br />--- <br />Location of Ducts <br />Instructions <br />Duct Leakage Coefficient <br />Conditioned Space <br />1.00 <br />Sum of UA <br />62.97 <br />Envelope Heat Load <br />3,086 <br />Btu / Hour <br />Fiaure 1. <br />Sum of UAX AT <br />Air Leakage Heat Load <br />1,545 <br />Btu / Hour <br />vaumeX 0..6XATX.01E <br />Above Grade <br />Building Design Heat Load <br />4,631 <br />Btu / Hour <br />Air Leakage + Envelope Heat Loss <br />�. <br />Building and Duct Heat Load <br />4,631 <br />Btu / Hour <br />Ducts m uncordUmed space: Sum d Buildirg Heat Loss X 1.10 <br />Ducts in cmdltimed space Sum of Building Heat Lass X 1 <br />Maximum Heat Equipment Output <br />6,483 <br />Btu / Hour <br />Building and Duct Heat Loss X 1.40 im Forced Air Furnace <br />Building and Duct Heat Loss X 1.25 for Heaf Pump <br />(07101113) <br />1 <br />