REV1 REVIEWED BLD2023-0908+Energy_Calculations+2.6.2024_9.35.35_AM+4041889BLD2023-0908 REVISION
Simple Heating System Size: Washington State Feb 06 2024
This heating system sizing calculator is based on the Prescriptive Requirements of the 2018 Washington State Energy Code (WSEC) and
CITY OF EDMONDS
ACCA Manuals J and S. This tool will calculate heating loads only. ACCA for sizing cooling systems should be used to determine E
ELOPMENT SERVICES
procedures
DEPARTMENT
cooling loads.
................................................
REVIEWED
Please complete the green drop -downs and boxes that are applicable to your project. As you make selections in the drop -downs for each
BY
section, some values will be calculated for If do not see the selection need in the drop -down down options, lease contact the WSU
TY i
CIDING
you. you you
y y y p p p
� BUILDING DEPARTMENT:
DEPARTEDMONDMENT:
Energy Program at energycode@energy.wsu.edu or (360) 956-2042 for assistance
Project Information
Contact Information
Kean Addition
WalIsand Weeds, Inc.
10533 243rd PI SW
110016 Edmonds Way#C229
Edmonds WA98020
I lEdmondsWA98020
Heating System Type: 0 All other systems 0 Heat Pump
To see detailed instructions for each section, place your cursor on the word "Instructions"
Design Temperature
Instructions Design Temperature Difference (AT)
Ed m o n d s Ell OT = Indoor (70 degrees) - Outdoor Design Temp
Area of Building
Conditioned Floor Area
Instructions Conditioned Floor Area (sq ft)
636
Average Ceiling Height
Conditioned Volume
Instructions Average Ceiling Height (ft)
8.0
5,088
Glazing and Doors
U-Factor
X Area =
UA
Instructions
U-0.30
- J
0.300
112
33.60
Skylights
U-Factor
X Area =
UA
Instructions
0.50
®
4.00
Insulation
Attic
U-Factor
X Area =
UA
Instructions R-49
Ell
0.026
636
16.54
Single Rafter or Joist Vaulted Ceilings
U-Factor
X Area
UA
Instructions Select R-Value
No selection
Above Grade Walls (see Figure1)
U-Factor
X Area
UA
Instructions `
a R-21 Intermediate
- J
0.056
996
55.78
Floors
U-Factor
X Area
UA
Instructions R-30
F1
0.029
636
18.44
Below Grade Walls (see Figurel)
U-Factor
X Area
UA
Instructioi No Below Grade Walls in t - j
0.028
0
Slab Below Grade (see Figure 1)
F-Factor
X Length
UA
Instructions
Select conditioning
�
No selection
---
Slab on Grade (see Figure1)
F-Factor
X Length
UA
Instructions R-10 Fully Insulated
0.360
F 44
15.84
Location of Ducts
Instructions
Duct
Leakage Coefficient
Conditioned S ace
R
1.00
Sum of UA
144.20
Fiaure 1.
Above Grade
46
Envelope Heat Load 6,633 Btu / Hour
Sum ofUAxAT
Air Leakage Heat Load 2,528 Btu / Hour
Volume x 0.6 x AT x 0.018
Building Design Heat Load 9,161 Btu / Hour
Air leakage + envelope heat loss
Building and Duct Heat Load 9,161 Btu / Hour
Ducts in unconditioned space: sum of buildina heat loss x 1.10
Ducts in conditioned space: sum of buildinq heat loss x 1
Maximum Heat Equipment Output 11,451 Btu / Hour
Buildina and duct heat loss x 1.40 for forced air furnace
Buildina and duct heat loss x 1.25 for heat oumo
(07101113)