Heat_Sizing_code specs_final_2015 Ken Wilson DuplexSimple Heating System Size: Washington State
This heating system sizing calculator is based on the Prescriptive Requirements of the 2015 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 2015 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
Ken Wilson Duplex
To see detailed instructions for each section, place your cursor on the word "Instructions".
Heating System Type:
Design Temperature
Area of Building
Glazing and Doors
Skylights
Insulation
Location of Ducts
Conditioned Floor Area
Average Ceiling Height
Attic
Single Rafter or Joist Vaulted Ceilings
Above Grade Walls (see Figure 1)
Floors
Below Grade Walls (see Figure 1)
Slab Below Grade (see Figure 1)
Slab on Grade (see Figure 1)
Instructions
Instructions
Instructions
Instructions
Instructions
Instructions
Instructions
Instructions
Instructions
Instructions
Instructions
Instructions
Instructions
Conditioned Floor Area (sq ft)
Average Ceiling Height (ft)
Sum of UA
Envelope Heat Load
Sum of UA X ∆T
Air Leakage Heat Load
Volume X 0.6 X ∆T X .018
Building Design Heat Load
Air Leakage + Envelope Heat Loss
Building and Duct Heat Load
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
Building and Duct Heat Loss X 1.40 for Forced Air Furnace
Building and Duct Heat Loss X 1.25 for Heat Pump
Contact Information
Dolphin Quest Home Design
Design Temperature Difference (∆T)
∆T = Indoor (70 degrees) - Outdoor Design Temp
1322
8
U-Factor
0.3
U-Factor
0.5
U-Factor
0.026
U-Factor
No selection
U-Factor
0.056
U-Factor
0.029
U-Factor
No selection
F-Factor
No selection
F-Factor
No selection
X
X
X
X
X
X
X
X
X
Conditioned Volume
10576
Area
188
Area
0
Area
724
Area
0
Area
1660
Area
724
Area
Length
Length
Duct Leakage Coefficient
1.1
=
=
=
UA
56.4
UA
---
UA
18.824
UA
---
UA
92.96
UA
20.996
UA
---
UA
---
UA
---
189.18
10404.9
6282.144
16687.044
18355.7484
22944.6855
55
Btu / Hour
Btu / Hour
Btu / Hour
Btu / Hour
Btu / Hour
Indoor Design Temperature
70
Column1
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233
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235
Each of these sections contain on row 2 the result of the selections, and three columns: a lookup number for formulas, selections for drop down boxes, and the measurement to use in the
formulas.
162
Outdoor Design Temperature
City
Select closest city
Aberdeen 20 NNE
Anacortes
Anatone
Appleton
Auburn
Battleground
Bellevue
Bellingham 2N
Benton City 2 NW
Bickleton
Blaine
Bothell 2 N
Bremerton
Brier
Buckley 1 NE
Bumping Lake
Burlington
Camas
Castle Rock
Cedar Lake
Centralia
Central Park
Chehalis
Chelan
Cheney
Chesaw
Chewalah 2 S
Chief Joseph Dam
Clallam Bay 1 NNE
Clarkston
Clearbrook
Clearwater
Cle Elum
Clyde Hill
Colfax 1 NW
College Place
Colville AP
Conconully
Concrete
Connell 4 NNW
Cougar 5 E
Coulee Dam 1 SW
Coupeville 1 S
Cushman Dam
Dallesport AP
Darrington RS
Davenport
Dayton 1 WSW
Deer Park 2 E
Des Moines
Diablo Dam
Dishman
East Bremerton
Edmonds
Electron Headwks
Ellensburg AP
Elma
Eltopia 6 W
Elwha RS
Enumclaw
Ephrata AP
Everett JC
Everett Paine AFB
Fircrest
Forks I E
Fort Lewis
Fruitvale
Glacier RS
Glenoma (Kosmos)
Goldendale
Grandview
Grapeview
Grayland 2 S
Grays River Hatchery
Greenwater
Grotto
Harrington 2 S
Hartline
Hatton 8 E
Holden Village
Hoquiam AP
Ice Harbor Dam
Inchelium 2 NW
Issaquah
John Day Dam
Kelso AP
Kennewick 10 SW
Kent
Kid Valley
Kirkland
Lacey
Lacrosse 3 ESE
La Grande
Lake Cle Elum
Lake Forest Park
Lake Kachess
Lake Keechelus
Lakewood Center
Landsburg
Larson AFB
Laurier
Leavenworth
Lemanasky Lake
Lind 3 NE
Linwood
Little Goose Dam
Long Beach 3 NNE
Longview
Lower Granite Dam
Lower Monument Dam
Lynden
Lynnwood
Maloft
Marietta 3 NNW
Marysville
McMillin Res.
McNary Dam
Medical Lake
Medina
Mercer Island
Metaline Falls
Methow 2 W
Mountlake Terrace
Mt. Spokane Summit
Mount Vernon 3 WNW
Moxee City 10 E
Mud Mtn. Dam
Nespelem 2 S
Newhalem
Newport
Normandy Park
Northport
Oak Harbor
Oakville
Odessa
Olga 2 SE
Olympia, AP.
Omak 2 NW
Opportunity
Oroville
Othello
Packwood
Palmer 3 SE
Parkland
Pasco
Plain
Pleasant View
Pt. Grenville
Pomeroy
Port Angeles
Port Orchard
Port Townsend
Priest Rapids Dam
Prosser
Pullman Exp. Sta.
Puyallup
Quilcene 2 SW
Quillayute AP
Quinault RS
Quincy 1 NE
Rainier, Longmire
Paradise RS
Raymond
Redmond
Renton
Republic
Richland
Rimrock Tieton Dam
Ritzville
Rosalia
Ross Dam
St. John
Sappho 8 E
Satus Pass
Seattle: Sea-Tac AP
Sedro Woolley 1 E
Selah
Sequim
Shelton
Shoultes
Skamania Fish Hatch.
Smyrna
Snohomish
Snoqualmie Falls
Snoqualmie Pass
South Broadway
So. Olympic Tree Farm
Spanaway
Spokane AP
Spokane CO
Spokane Fairchild AFB
Sprague
Stampede Pass
Startup 1 E
Stehekin 3 NW
Steilacoom
Stevens Pass
Stockdill Ranch
Sumner
Sunnyside
Tacoma McChord
Tacoma CO
Tatoosh Island
Thompson Place
Tietort Intake
Toledo AP
Toppenish
Trinidad 2 SSE
Tukwila
Tumwater
University Place
Upper Baker Dam
Vancouver
Vashon Island
Walla Walla AP
Walla Walla CO
Wapato
Washougal 8 ENE
Waterville
Wawawai 2 NW
Wellpinit
Wenatchee AP
Wenatchee CO
West Clarkston
Whidbey Island
White River RS
White Swan RS
Whitman Mission
Wilbur
Willapa Harbor
Wilson Creek
Wind River
Winthrop 1 WSW
Yakima AP
Temp
25
24
-4
11
25
19
24
19
11
4
17
17
29
24
26
-5
19
21
23
20
21
27
21
10
4
-11
-9
6
28
10
19
26
1
24
2
6
-2
-7
19
6
25
9
21
22
14
13
5
5
-5
25
15
9
29
24
16
2
24
9
24
26
7
23
21
29
23
24
1.1
13
18
7
12
30
28
24
1.4
21
3
7
1
4
26
17
0
23
19
24
13
21
20
17
17
-3
23
-4
20
-2
0
23
18
6
-8
-3
-7
6
10
22
25
24
14
18
18
24
4
18
23
21
11
4
24
25
-1
1
22
-2
20
8
23
-4
19
-5
24
2
16
20
7
24
17
3
8
5
9
16
22
20
13
-3
16
27
3
28
29
25
14
12
1
19
23
23
25
4
15
8
28
17
24
-9
11
4
6
6
14
15
23
10
24
19
11
23
23
23
24
8
21
22
6
11
24
20
4
10
4
4
7
20
12
21
6
-14
19
12
21
29
31
20
6
17
11
13
24
17
29
14
22
28
6
13
10
21
1
14
1
13
10
10
11
12
8
11
4
26
3
15
-12
11
Column1
1
2
3
2
Attic
R-Value
Select R-Value
R-49
R-38 Advanced
U-Factor
No selection
0.026
0.026
Column1
1
2
3
1
Single Rafter or Joist Vaulted Ceilings
R-Value
Select R-Value
R-38 Vented
No Vaulted Ceilings in this project.
U-Factor
No selection
0.027
---
Column1
1
2
2
Above Grade Walls
R-Value
Select R-Value
R-21 Intermediate
U-Factor
No selection
0.056
Column1
1
2
3
4
2
Floors
R-Value
Select R-Value
R-30
R-38
No Floors above unconditioned spaces.
U-Factor
No selection
0.029
0.025
---
Column1
1
2
3
4
1
Below Grade Walls
R-Value
Select R-value
R-21 Interior
R-10 Continuous Exterior
No Below Grade Walls in this project.
From original form
2' Depth Walls
3.5' Depth Walls
7' Depth Walls
Other
U-Factor
No selection
0.042
0.064
---
0.042
0.041
0.037
Column1
1
2
3
1
Slab Below Grade
R-Value
Select conditioning
R-5 Thermal Break at slab edge
No Slab Below Grade in this project.
From original form
2' Depth
3.5' Depth
7' Depth
Other
F-Factor
No selection
0.57
---
0.59
0.64
0.57
Column1
1
2
3
4
1
Slab on Grade
R-Value
Select R-Value
R-10 Perimeter
R-10 Fully Insulated
No Slab on Grade in this project.
F-Factor
No selection
0.54
0.36
---
Offset
1
2
3
4
3
Location of Ducts
location of ducts
Select Location of Ducts
Conditioned Space
Unconditioned Space
No Ducts
Heat loss correction
1
1.1
1
Heating System Type
Forced Air Furnace
Heat Pump
2
1
2
1.4
1.25