REVIEWED BLD2024-0316+Energy1+3.7.2024_3.43.53_PM+4112138BLD2024-0316 RECEIVED
Simple Heating System Size: Washington State Mar 08 2024
This heating system sizing calculator is based on the Prescriptive Requirements of the 2018 Washington State Energy Code (WSEC) and ACCA ci OF EDMONDS
Manuals J and S. This tool will calculate heating loads only. ACCA procedures for sizing cooling systems should be used to determine cooling IoEr PMENT SERVICES
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
energycode@energy.wsu.edu or (360) 956-2042 for assistance.
Project Information Contact Information
MACHUGA ADDITION TO EXISTING HOUSE JEN & STEVEN MACHUGA
21227 96th Ave. W., Edmonds, WA 98020
Heating System Type: o All Other systems • Heat Pump
To see detailed instructions for each section, place your cursor on the word "Instructions"
Design Temperature
Instructions Design Temperature Difference (AT)
Seattle: Sea-Tac AP AT = Indoor (70 degrees) - Outdoor Design Temp
A' ^F Buildina
Conditioned Floor Area
Instructions Conditioned Floor Area (sq ft)
Average Ceiling Height
Instructions Average Ceiling Height (ft)
Glazing and Doors
Instructions
u-o.za •
Skylights
Instructions
Insulation
Attic
Instructions R-49
Single Rafter or Joist Vaulted Ceilings
Instructions No Vaulted Ceilings in this project.
Above Grade Walls (see Figure 1)
Instructions R-21 Intermediate
Floors
Instructions
R- 1a
Below Grade Walls (See Figure 1)
Instructions No Below Grade Walls in this project.
Slab Below Grade (see Figure 1)
Instructions
No Slab Below Grade in this project. �
molk—
Slab on Grade (see Figure 1)
Instructions
No Slab on Grade in this project.
Location of Ducts
Instructions
Conditioned Space
Figure 1.
Above Grade
1,281
9.0
U-Factor
0.280
Conditioned Volume
11,529
X Area = UA
411 115.08
U-Factor
X Area =
UA
0.50
12
6.00
U-Factor
X Area =
UA
0.026
1,319
34.29
U-Factor
X Area
UA
U-Factor
X Area
UA
0.056
1,506
84.34
U-Factor
X Area
UA
0.025
1,319
32.98
U-Factor
X Area
UA
0.028
0�
F-Factor
X Length
UA
0.303
0�
---
F-Factor
X Length
UA
Duct Leakage Coefficient
1.00
Sum of UA
46
REVIEWED
BY
CITY OF EDMONDS
272.69
Envelope Heat Load 12,544
Btu / Hour
Sum of UA x AT
Air Leakage Heat Load 5,728
Btu / Hour
Volume x 0.6 x AT x 0.018
Building Design Heat Load 18,271
Btu / Hour
Air leakage + envelope heat loss
Building and Duct Heat Load 18,271
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 22,839
Btu / Hour
Buildinq and duct heat loss x 1.40 for forced air furnace
Buildinq and duct heat loss x 1.25 for heat pump
(07101113)