2021.0019 909-VA_Heating_Glazing(07/01/13)
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)55
∆T = Indoor (70 degrees) - Outdoor Design Temp
Area of Building
Conditioned Floor Area
Instructions Conditioned Floor Area (sq ft)1,749
Average Ceiling Height Conditioned Volume
Instructions Average Ceiling Height (ft)8.0 13,992
Glazing and Doors U-Factor X Area =UA
Instructions 0.280 285 79.74
Skylights U-Factor X Area =UA
Instructions 0.50 0 ---
Insulation
Attic U-Factor X Area =UA
Instructions 0.026 1,511 39.29
Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA
Instructions 0.027 238 6.43
Above Grade Walls (see Figure 1)U-Factor X Area UA
Instructions 0.056 1,404 78.62
Floors U-Factor X Area UA
Instructions 0.025 1,749 43.73
Below Grade Walls (see Figure 1)U-Factor X Area UA
Instructions No selection 0 ---
Slab Below Grade (see Figure 1)F-Factor X Length UA
Instructions No selection 0 ---
Slab on Grade (see Figure 1)F-Factor X Length UA
Instructions No selection 0 ---
Location of Ducts
Instructions Duct Leakage Coefficient
1.10
Sum of UA 247.81
Envelope Heat Load 13,629 Btu / Hour
Sum of UA x ∆T
Air Leakage Heat Load 8,311 Btu / Hour
Volume x 0.6 x ∆T x 0.018
Building Design Heat Load 21,941 Btu / Hour
Air leakage + envelope heat loss
Building and Duct Heat Load 24,135 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 30,168 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.
909-VA CE DEVELOPMENT
Above Grade
Below Grade
Figure 1.
All Other Systems Heat Pump
Rainier, Longmire
Unconditioned Space
Select R-Value
Select conditioning
Select R-value
R-38
R-21 Intermediate
R-38 Vented
R-49
U-0.28
Window, 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.)0.28 1 3 0 6 8 20.0 5.60
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 2 8 6 8 17.8 4.98
0.28 2 1 0 6 0 12.0 3.36
0.28 1 4 0 3 6 14.0 3.92
0.28 2 4 0 5 0 40.0 11.20
0.28 1 5 0 5 0 25.0 7.00
0.28 1 6 0 5 0 30.0 8.40
0.28 2 2 0 5 0 20.0 5.60
0.28 2 2 6 5 0 25.0 7.00
0.28 2 4 0 2 0 16.0 4.48
0.28 2 4 0 5 0 40.0 11.20
0.28 1 5 0 5 0 25.0 7.00
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
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
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
Sum of Vertical Fenestration Area and UA 264.8 74.14
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
284.8 79.74Total Sum of Fenestration Area and UA (for heating system sizing calculations)
909-VA CE DEVELOPMENT
2868 GARAGE DOOR
1060 SIDELITES
4036
4050
5050
6050
2050
2650
4020
4050
5050
Exempt Glazed Fenestration (15 sq. ft. max.)