Energy Code WorksheetWindow, Skylight and Door Schedule
Project Information Contact Information
Width Height
Ref.U-factor Qt.Feet Inch Feet Inch Area UA
Exempt Swinging Door (24 sq. ft. max.)0.20 1 3 8 24.0 4.80
0.0 0.00
Vertical Fenestration (Windows and doors)
Component Width Height
Description Ref.U-factor Qt.Feet Inch Feet Inch Area UA
0.28 1 6 6 36.0 10.08
0.28 1 5 4 6 22.5 6.30
0.28 1 4 4 16.0 4.48
0.28 1 6 8 48.0 13.44
0.28 2 5 6 60.0 16.80
0.28 1 6 5 30.0 8.40
0.28 2 2 5 20.0 5.60
0.28 1 5 4 6 22.5 6.30
0.28 1 1 6 6 9.0 2.52
0.28 1 6 4 24.0 6.72
0.28 1 4 4 16.0 4.48
0.28 1 4 4 16.0 4.48
0.28 0.0 0.00
0.28 0.0 0.00
0.28 0.0 0.00
0.28 0.0 0.00
0.28 0.0 0.00
0.28 0.0 0.00
0.28 0.0 0.00
0.28 0.0 0.00
0.28 0.0 0.00
0.28 0.0 0.00
0.28 0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
Exempt Glazed Fenestration (15 sq. ft. max.)
ENTRY
PLAYROOM
STAIR
BEDROOM 4
DINING
GREAT ROOM
MASTER BEDROOM
MASTER BEDROOM
MASTER BATH
L2M-2470
BEDROOM 3
BEDROOM 2
KITCHEN
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
Sum of Vertical Fenestration Area and UA 320.0 89.60
Vertical Fenestration Area Weighted U = UA/Area 0.28
Overhead Glazing (Skylights)
Component Width Height
Description Ref.U-factor Qt.Feet Inch Feet Inch Area UA
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
0.0 0.00
Sum of Overhead Glazing Area and UA 0.0 0.00
Overhead Glazing Area Weighted U = UA/Area 0.00
344.0 94.40Total Sum of Fenestration Area and UA (for heating system sizing calculations)
Simple Heating System Size: Washington State
Project Information Contact Information
Heating System Type:
To see detailed instructions for each section, place your cursor on the word "Instructions"
Design Temperature
Instructions Design Temperature Difference (∆T)51
∆T = Indoor (70 degrees) - Outdoor Design Temp
Area of Building
Conditioned Floor Area
Instructions Conditioned Floor Area (sq ft)2,470
Average Ceiling Height Conditioned Volume
Instructions Average Ceiling Height (ft)8.5 20,995
Glazing and Doors U-Factor X Area =UA
Instructions 0.280 320 89.60
Skylights U-Factor X Area =UA
Instructions 0.50 ---
Insulation
Attic U-Factor X Area =UA
Instructions 0.026 2,470 64.22
Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA
Instructions No selection ---
Above Grade Walls (see Figure 1)U-Factor X Area UA
Instructions 0.056 2,790 156.24
Floors U-Factor X Area UA
Instructions 0.025 2,470 61.75
Below Grade Walls (see Figure 1)U-Factor X Area UA
Instructions No selection ---
Slab Below Grade (see Figure 1)F-Factor X Length UA
Instructions No selection ---
Slab on Grade (see Figure 1)F-Factor X Length UA
Instructions No selection ---
Location of Ducts
Instructions Duct Leakage Coefficient
1.00
Sum of UA 371.81
Envelope Heat Load 18,962 Btu / Hour
Sum of UA x ∆T
Air Leakage Heat Load 11,564 Btu / Hour
Volume x 0.6 x ∆T x 0.018
Building Design Heat Load 30,526 Btu / Hour
Air leakage + envelope heat loss
Building and Duct Heat Load 30,526 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 38,158 Btu / Hour
Building and duct heat loss x 1.40 for forced air furnace
Building and duct heat loss x 1.25 for heat pump
This heating system sizing calculator is based on the Prescriptive Requirements of the 2018 Washington State Energy Code (WSEC) and ACCA
Manuals J and S. This tool will calculate heating loads only. ACCA procedures for sizing cooling systems should be used to determine cooling loads.
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
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
energycode@energy.wsu.edu or (360) 956-2042 for assistance.
L2M-2470
Above Grade
Below Grade
Figure 1.
All Other Systems Heat Pump
Puyallup
Conditioned Space
Select R-Value
Select conditioning
Select R-value
R-38
R-21 Intermediate
Select R-Value
R-49
U-0.28
(07/01/13)