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Simple Heating System Size: Climrirn-Zone 1 <br /> Project Information Contact Information <br /> 520 HOME PLACE Loren Sand <br /> Everett, Washington 98203 425-293-4406 <br /> House Addition (8' extension to south) 364 sqft <br /> Indoor Design Temperature 70 <br /> Outdoor Design Temperature 21 <br /> Design Temperature Difference (AT) <br /> AT=Indoor-Outdoor Design Temp 49 <br /> Conditioned Floor Area 1 3139 <br /> Conditioned Volume 25112 <br /> Glazing <br /> Copy Sum of UA from Glazing Schedule 131 <br /> Attic U-Factor X Area = UA <br /> R-49 0.0270 <br /> R-38 Advanced 0.026 0 <br /> 0 ffl <br /> Single Rafter or Joist Vaulted Ceilings <br /> U-Factor X Area = UA <br /> R-38 Vented 0.027 2115 57.1 <br /> Above Grade Walls U-Factor X Area = UA <br /> R-21 0.056 1692 <br /> 1. <br /> Floors U-Factor X Area = UA <br /> R-30 0.029F---2-1715 61.3 <br /> Below Grade Walls U-Factor X Area = UA <br /> 2' Depth Walls 0.042 <br /> 3.5' Depth Walls 0.041 679 27.8 <br /> 7' Depth Walls 0.037 151 5.6 <br /> —� <br /> Slab Below Grade F-Factor X Length = UA <br /> 2' Depth 0.59 <br /> 3.5' Depth 0.64 <br /> 7' Depth 0.57 <br /> Slab on Grade F-Factor X Length = UA <br /> R-10 2' perimeter 0.54 <br /> R-10 Full - Heated 0.55 <br /> Sum of UA 377 <br /> Envelope Heat Load 18483 Btu /Hour <br /> Sum of UA X AT <br /> Air Leakage Heat Load 13289 Btu/ Hour <br /> ((Volume X 0.6)X AT)X.018)) <br /> Building Design Heat Load 31773 Btu / Hour <br /> Air Leakage+Envelope Heat Loss <br /> Building and Duct Heat Load 1.15 36538 Btu / Hour <br /> If ducts are located in unconditioned space:Sum of Building Heat Loss X 1.15 <br /> If ducts are located in conditioned space: Sum of Building Heat Loss X 1 <br /> Maximum Heat Equipment Output 150% F---54-8-078 Btu / Hour <br /> Building and Duct Heat Loss X 1.50 <br /> WSEC Prescriptive Worksheet(2010 Edition) <br /> WSUEEPIO-010 Copyright 2010 <br />