REVIEWED BLD BLD2021-0175+WSEC+1.29.2021_3.59.41_PM+2023162RECEIVED
BLD2021-0175 1.29.21
Simple Heating System Size: Washington State
This heating system sizing calculator is based on the Prescriptive Requirements of the 2015 Washington State Energy Code (WSEC) �. 1 a�'r ;a
Manuals J and S. This calculator will calculate heating loads only. ACCA procedures for sizing cooling systems should be used to de:ermins�ljpp EDNICINDS
loads. DEVELOP ENT
SERVICES DEPARTMENT
Please fill out all of the green drop -downs and boxes that are applicable to your project. As you make selections in the drop -downs fcr each section.
some values will be calculated for you. If you do not see the selection you need in the drop -down options, please call the WSU Energy Extension
Program at (360) 956-2042 for assistance.
Project Information Contact Information
KOSZAREK RESIDENCE H2D ARCHITECTURE & DESIGN
17916 73RD AVE W, EDMONDS, WA 98026 HEIDI HELGESON: 206-542-3734
LAUREN.KOSZAREK@GMAIL.COM HEIDI@H2DARCHITECTS.COM
Heating System Tvne: 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)
Edmonds AT = Indoor (70 degrees) - Outdoor Design Temp
Area of Building
Conditioned Floor Area
Instructions Conditioned Floor Area (sq ft)
3,540
Average Ceiling Height
Conditioned Volume
Instructions Average Ceiling Height (ft)
8.0
28,316
Glazing and Doors
U-Factor
X Area =
UA
Instructions
U-0.28
0.280
847
237.27
Skylights
U-Factor
X Area =
UA
Instructions
0.50
27
13.60
Insulation
Attic
U-Factor
X Area =
UA
Instructions R 49
0.026
555
14.43
Single Rafter or Joist Vaulted Ceilings
U-Factor
X Area
UA
Instructions R-38 Vented
0.027
447
12.06
Above Grade Walls (see Figure 1)
U-Factor
X Area
UA
Instructions R-21Intermediate
- I
0.056
2,835
158.74
Floors
U-Factor
X Area
UA
Instructions
`R 38 —
0.025
158
3.95
Below Grade Walls (see Figure 1)
U-Factor
X Area
UA
Instructions R-21Interior
0.042
343
14.42
Slab Below Grade see Figure t
F-Factor
X Length
UA
Instructions No Slab Below Grade in this project.
0.303
---
Slab on Grade (see Figure 1)
F-Factor
X Length
UA
Instructions R-10 Perimeter
0.540
119
64.31
Location of Ducts
Instructions
Duct Leakage Coefficient
Conditioned Space
4
1.00
Sum
of UA
518.79
Figure 1.
Above Grade
46
Envelope Heat Load
23,864
Btu / Hour
Sum of UA X AT
Air Leakage Heat Load
14,067
Btu / Hour
VolumeX 0.6XATX.018
Building Design Heat Load
37,932
Btu / Hour
Air Leakage + Envelope Heat Loss
Building and Duct Heat Load
37,932
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
47,415
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
(07101113)