REVIEWED BLD2023-0799+WSEC 6.28.2023_8.32.05_AM+3636438BLD2023-0799 RECEIVED
Jul 06 2123
simple Heating system size: wasnington state
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.
Project Information Contact Information R..EVIE .... E D � � .............
,... �. �............
COCHRAN RESIDENCE 1H2D ARCHITECTURE + DESIGN BY
CITY OF EDMONDS
8475 FREDERICK PL 123020 EDMONDS WAY #113 t BUILDING DEPARTMENT'
EDMONDS, WA98026 1 1EDMONDS, WA98020
Heating System Type: 0 All Other Systems OHeat Pump
To see detailed instructions for each section, place your cursor on the word 'Instructions"
Design Temperature
Instructions Design Temperature Difference (AT)
Edmonds _ AT = Indoor (70 degrees) - Outdoor Design Temp
Area of Building
Conditioned Floor Area
Instructions Conditioned Floor Area (sq ft)
5,557
Average Ceiling Height
Conditioned Volume
Instructions Average Ceiling Height (ft)
8.5
47,232
Glazing and Doors
U-Factor
X Area =
UA
Instructions
ILI-0s0 � I
0.300
989
296.64
Skylights
U-Factor
X Area =
UA
Instructions
0.50
0�
---
Insulation
Attic
U-Factor
X Area =
UA
Instructions R-49
0.026
2,745
71.36
Single Rafter or Joist Vaulted Ceilings
U-Factor
X Area
UA
Instructions R-38 Vented
0.027
319
8.62
Above Grade Walls (see Figure 1)
U-Factor
X Area
UA
Instructions R-21 Intermediate
0.056
2,862
160.26
Floors
U-Factor
X Area
UA
Instructions
; I
0.029
3,064
88.86
R-30
J
Below Grade Walls (see Figure 1)
U-Factor
X Area
UA
Instructions
0.042
808
33.94
R-21 Interior
Slab Below Grade (see Figure 1)
F-Factor
X Length
UA
Instructions I
0.000
0�
---
No Slab Below Grade in this project.
Slab on Grade (see Figure 1)
F-Factor
X Length
UA
Instructions
0.360
101
36.36
R-10 Fully Insulated LI
Location of Ducts
Instructions
Duct Leakage Coefficient
Conditioned Space
1.00
Sum
of UA
696.04
Figure 1.
Above Grade
46
Envelope Heat Load 32,018 Btu / Hour
Sum of UA x AT
Air Leakage Heat Load 23,465 Btu / Hour
Volume x 0.6 x AT x 0.018
Building Design Heat Load 55,483 Btu / Hour
Air leakage + envelope heat loss
Building and Duct Heat Load 55,483 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 69,353 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
(07/01/13)