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• <br /> Simple Heating System Size: Washington State <br /> This heating system sizing calculator is based on the Prescriptive Requirements of the 2018 Washington State Energy Code(WSEC)and ACCA Manuals <br /> J and S.This tool will calculate heating loads only.ACCA procedures for sizing cooling systems should be used to determine cooling loads. <br /> Please complete 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 contact the WSU Energy Program at <br /> energycode@energy.wsu.edu or(360)956-2042 for assistance. <br /> Project Information Contact Information <br /> Wyatt ADU jamesmark2001@gmail.com <br /> 2405 STATE ST <br /> EVERETT WA 98201 <br /> Heating System Type: 0 All Other Systems O Heat Pump <br /> To see detailed instructions for each section,place your cursor on the word"Instructions" <br /> Design Temperature <br /> Instructions Design Temperature Difference(AT) 47 <br /> I tverett 1C y ST=Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building <br /> Conditioned Floor Area <br /> ' Conditioned Floor Area(sq ft) 929 <br /> Average Ceiling Height Conditioned Volume <br /> ',' '"t,,', Average Ceiling Height(ft) 9.0 8,361 <br /> Glazing and Doors U-Factor X Area = UA <br /> Instructions - <br /> u-0.30 .4 0.300 103 30.90 (�n n <br /> Skylights U-Factor X Area = UA u W a) <br /> Instructions 0.50 --- NcrU <br /> C=> <br /> Insulation C= cv j <br /> Attic 6 U-Factor X Area = UA (L co <br /> Instructions { .•— <br /> t vi .._1 0.026 768 19.97 U. <br /> Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA „ _ w Z } E <br /> IlLfl_IJt <br /> 0.027 l'—CL <br /> Above Grade Walls(see Figure t) U-Factor X Area UA C.) <br /> 0.056 1,464 81.98 <br /> Floors U-Factor X Area UA <br /> t;• 71 0.029 190 5.51 <br /> Below Grade Walls(see Figure 1) U-Factor X Area UA <br /> iiiii,<t a s.a;m' No selection <br /> — ) <br /> Slab Below Grade(seeFioure.° F-Factor X Length UA <br /> Select conditioning _,.� . No selection --- <br /> Slab on Grade(see Figure 1) F-Factor X Length UA <br /> Instructions 0.540 87 46.98 <br /> R-10 Perimeter . <br /> Location of Ducts <br /> Instructions _ Duct Leakage Coefficient <br /> 0 No Ducts r. 40 <br /> 1.00 <br /> Sum of UA 185.34 <br /> Envelope Heat Load 8,711 Btu/Hour <br /> Figure 1. Sum of UA x 1T <br /> Air Leakage Heat Load 4,244 Btu/Hour <br /> Volume x 0.6 x \T x 0 018 <br /> Above Grade Building Design Heat Load 12,955 Btu/Hour <br /> Air leakage+envelope heat loss <br /> Building and Duct Heat Load 12,955 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 16,194 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 />