BLD2020-1418+Energy_Calculations+12.30.2020_4.34.21_PM+1968512BLD2020-1418 RECEIVED
Simple Heating System Size: Washington State
This heating system sizing calculator is based on the Prescriptive Requirements of the 2012 Washington State Energy Code (WSEC) and
ACCA Manuals J and S. This calculator will calculate heating loads only. ACCA procedures for sizing cooling systems should be used to
determine cooling loads.
The glazing (window) and door portion of this calculator assumes the installed glazing and door products have an area weighted average U-
factor of 0.30. The incorporated insulation requirements are the minimum prescriptive amounts specified by the 2012 WSEC.
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 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 call the WSU
Energy Extension Program at (360) 956-2042 for assistance.
Project Information Contact Information
Herzig Addtion Phillip "Skip" DeHennis
224 Skyline Dr 10016 Edmonds Way#C229
Edmonds WA 98020 Edmonds, WA 98020 in
Heating System Type: t♦ All other systems O Heat Pump
To see detailed instructions for each section, place your cursor on the word "Instructions".
Design Temperature
Instructions Design Temperature Difference (AT)
Edmonds Wo A = Indoor (70 degrees) - Outdoor Design Temp
Area of Buildina
Conditioned Floor Area
Instructions Conditioned Floor Area (sq ft)
Average Ceiling Height
Instructions Average Ceiling Height (ft)
Glazing and Doors
Instructions
Skylights
Instructions
Insulation
Attic
Instructions Select R-Value Ell
Single Rafter or Joist Vaulted Ceilings
Instructions R-38 Vented Ell
Above Grade Walls (see Figurer)
Instructions R-21 Intermediate
Floors
Instructions R-38
Below Grade Walls (see Figure 1)
Instructions Select R-value
Slab Below Grade (see Figurer)
Instructions
Select conditioning
Slab on Grade (see Figurer)
Instructions Select R-Value
Location of Ducts
Instructions
No Ducts
Fi ure 1.
Above Grade
678
Conditioned Volume
9.0
6,102
U-Factor
X Area =
UA
0.30
293
87.90
U-Factor
X Area =
UA
0.50
---
U-Factor
X Area =
UA
No selection
0
---
U-Factor
X Area
UA
0.027
678
18.31
U-Factor
X Area
UA
0.056
864
48.38
U-Factor
X Area
UA
0.025
678
16.95
U-Factor
X Area
UA
No selection
0
---
F-Factor
X Length
UA
No selection
0
F-Factor
X Length
UA
No selection
0
---
Duct Leakage Coefficient
1.00
Sum of UA
171.54
Envelope Heat Load
7,891
Sum of UAX AT
Air Leakage Heat Load
3,031
VolumeX 0.6XATX.018
Building Design Heat Load
10,922
Air Leakage + Envelope Heat Loss
Building and Duct Heat Load
10,922
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
15,291
Building and Duct Heat Loss X 1.40 for Forced Air Furnace
Building and Duct Heat Loss X 1.25 for Heat Pump
46
Btu / Hour
Btu / Hour
Btu / Hour
Btu / Hour
Btu / Hour
Dec 31 2020
CITY OF EDMONDS
EVELOPMENT SERVICES
DEPARTMENT
(07101113)