Energy Code WorksheetWSU Code Compliance Calculator, WSEC 2018
Project Information Messages / Comments *
Plan - 2482A
Review required for custom entries: - Doors
UA Reduction = 8.91, Proposed UA is better than baseline by 2.7%
Contact Information
Soundbuilt Homes Window area is 12% of floor area
PO Box 73790 -
Puyallup, WA 98373 Whole House Mechanical Ventilation Airflow Rate: 40 CFM with Run Time Percent of 100%, Balanced, Distributed
253-848-0820 Maximum allowable total measured duct leakage: 199 CFM25
ANALYSIS SET UP
What code compliance pathway are you using?
Project Building Type?
Occupancy Type?
Code Version? WSEC-R Rev: Oct. 2023, https://www.sbcc.wa.gov/sites/default/files/2023-12/O
Classification:Medium Dwelling Unit -- 2482 sq. ft.
Baseline Description: Code Baseline - Baseline and proposed window areas are equal.
About Your Selection:Up to 15 sf exempt window and 24 sf exempt door allowable
RESULTS - Comparison of Baseline and Proposed Design **
Component Performance, R occupancies
U *Area UA Area UA
Doors U =0.300 78 23.3 78 17.6
Overhead Glazing U =0.500 0 0.0 0 0.0
Vertical Glazing U =0.300 293 87.9 293 87.9
Flat/Vaulted Ceilings U =0.024 1,606 38.5 1,606 40.2
Wall (above grade) U =0.056 2,403 134.6 2,403 129.8
Floors over Crawlspace U =0.029 1,606 46.6 1,606 46.6
Slab on Grade F =0.540 0 0.0 0 0.0
Below Grade Wall U =N/A 000.0
Below Grade Slab F =N/A 000.0
* Values from Table R402.1.2 (Oct 2023)
Baseline UA Total 330.9 Proposed UA Total 322.0
Required Credits 8.0 Proposed Credits 8.0 from Tables 406.2 and 406.
UA Percent Reduction 3%
UA Reduction 8.9
If the Proposed UA ≤ the Target UA, and the Proposed Credits from Table 406 are ≥ those required in Section R406, then the home meets the WSEC.
** Results assume your inputs are complete and correct. Results do not constitute an approval. Analysis should be reviewed by your AHJ.
Total Credits
(406.2 & 406.3)
8.0
0.300
0.025
0.054
0.029
Proposed Design
U-Factor Compliance Path / Total UA Alternative
U
Baseline
New Construction
R3 Single family dwellings and townhouses
WSEC 2021
0.227
Brief Description of Selected Options*
1.5
Category
Select System TypeSystem No.
4
Option 2.2
Fuel Normalization
Credits (406.2)
1
Option 3.6
5.0
Full Description
For heating system using a heat pump that meets federal standards for the
equipment listed in Table C403.3.2(2) or Table C403.3.2(9) OR Air to Water heat
pump units that are configured to provide both heating and cooling and are rated in
accordance with AHRI 550/590
High Efficiency HVAC
Energy Credits
3.11 High Efficiency HVAC: Smart Thermostat 0.0
Table R406.2 Energy Equalization Credits
3.0Variable Refrigerant Heat Pump or Air-to-
Water Heat Pump
Select Options
Per Section R402.4.1.2 /1.5 ACH50 / For R-2, 0.20 cfm per ft2
at 50 Pa. / HRV with min SHR eff of 0.75 per IRC Section
M1505.3 or IMC Section 403.8
Table R406.3 Energy Credits
Option No.
2 Air Leakage Control and Efficient Ventilation
Efficient Building Envelope
3.1 -3.10
Energy Credits
(406.3)
* Results assume your inputs are complete and correct. Results do not constitute an approval. Analysis should be reviewed by your AHJ.
Air source ducted Heat Pump w/ Min HSPF2 of 10 (HSPF of
11). If htg design temp is 23F or below,a cold climate variable
capacity heat pump is required.
1.0
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WSU Code Compliance Calculator, WSEC 2018
Renewable Electric Energy kWh
Energy Credits
*Refer to WSEC 2015 Table R406.2 for complete option descriptions and requirements
4 Option 4.1
Option 5.6
0.0
0.0
High Efficiency HVAC Distribution System
7 Appliance Package
Efficient Water Heating: Drain Heat Recovery
Efficient Water Heating
Efficient Water Heating: Compact Hot Water Distribution
5.1
5.3-5.8
5.2
6
2.0
5.0
Ducts/distribution system in conditioned space per R403.3.2
Electric resistance, hydronic, ductless and gas fired systems <
80% AFUE systems not permitted
0.0
Electric heat pump water heater meeting NEEA Tier 3.
0.5
0.0
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WSU Code Compliance Calculator, WSEC 2018
THERMAL ENVELOPE DETAILS - Proposed Design
Conditioned Floor Area, Proposed Design 2,482 sq. ft
Classification Medium Dwelling Unit
Exterior Doors
Plan Component Door
ID Description Ref. U Qt. Feet
Inch Feet Inch Area UA
Exempt 00.0
Fiberglass Door Custom 0.15 1 3 6
8 20 3.0 Refer to WSEC R402.1
Solid Core Door Custom 0.17 1 2
8 6 8 18 3.0 Refer to WSEC R402.1
Sliding Door Custom 0.29 1 5 8 40 11.6 Refer to WSEC R402.1
00.0
00.0
00.0
00.0
00.0
00.0
00.0
Sum of Area and UA 78 17.6
0 3
Exterior Doors Area Weighted U 0.227
Overhead Glazing
Plan Component Glazing
ID Description U Feet
Inch Feet Inch
-
-
-
-
-
0.0 0
0 0
Overhead Glazing Area Weighted U
Vertical Glazing Schedule Rows to Show 12
Plan Component Glazing
ID Description U Feet
Inch Feet Inch
Exempt - - -
1 U=0.30 (Code Baseline)Table 406.2 0.30 2 2 5 20.0 6.00
2 U=0.30 (Code Baseline)Table 406.2 0.30 1 8 5 40.0 12.00
3 U=0.30 (Code Baseline)Table 406.2 0.30 3 5 5 75.0 22.50
4 U=0.30 (Code Baseline)Table 406.2 0.30 1 6 5 30.0 9.00
5 U=0.30 (Code Baseline)Table 406.2 0.30 1 6 4 24.0 7.20
6 U=0.30 (Code Baseline)Table 406.2 0.30 1 4 4 16.0 4.80
7 U=0.30 (Code Baseline)Table 406.2 0.30 2 5 4 40.0 12.00
8 U=0.30 (Code Baseline)Table 406.2 0.30 1 6 2 12.0 3.60
9 U=0.30 (Code Baseline)Table 406.2 0.30 1 6 4
6 27.0 8.10
10 U=0.30 (Code Baseline)Table 406.2 0.30 1 3 3 9.0 2.70
11 - -
12 - -
Sum of Area and UA 293.0 87.9
0
Vertical Glazing Area Weighted U 0.300
Vertical Glazing and Doors Area Weighted U 0.285
Flat/Vaulted Ceilings
Plan Component Attic
ID Description U
R60 blown Attic STD baffled 10-7 0.025 1,606 40.2
1,606 40.2
0
Walls (Above Grade)
UA
Area UARef.
Sum of Area and UA
Ref.
Ref.
Height
Notes
Height
Area
Width
Qt.
Sum of Area and UA
Qt. UAArea
HeightWidth
Width
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WSU Code Compliance Calculator, WSEC 2018
Plan Component Wall
ID Description Ref. U UA
R21 cavity+R0 foam INT 2X6W Lap (Code Baseline)10-5 0.054 2,403 130
2,403 130
0
Net Area
Sum of Area and UA
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WSU Code Compliance Calculator, WSEC 2018
Floor (over crawl or exterior)
Plan Component Floor UA
ID Description Ref. U
R30 vented Joist (Code Baseline)10-3 0.029 1,606 47
1,606 47
0
Slab on Grade (less than 2 feet below grade)
Plan Component Slab
ID Description Ref. F FP
00 0
Below Grade Walls and Slabs
Plan Component Slab Wall Wall Wall Slab
ID Description Depth Ref. U Area UA UA
Sum of Area, Length and UA 0 0.0 0 0
0
Links to Download Forms, Checklists and Other Resources
Compliance Certificate Instructions
Insulation Certificate for Residential New Construction
Duct Testing Affadavits
Existing Construction
New Construction
Prescriptive Checklist for 2018 WSEC
Alterations (Remodel) Worksheet
EER SEER2 COP HSPF2 Converter https://www.adicotengineering.com/eer-seer2-cop-hspf2-kwton-converter
Show
Ventilation Requirements
Conditioned Floor Area 2,482 sq. ft.
Number of Bedrooms 1
Run-Time Percent in Each 4-Hour Segment 100%
Is the system Balanced?Verify system meets definition of 'Balanced Whole-House Ventilation'
Is the system Distributed?Verify system meets definition of 'Distributed Whole-House Ventilation'
Ventilation Code Section IRC, Chapter 15
Whole House Mechanical Ventilation Airflow Rate 40 CFM
Show
HVAC Thermal Distribution System Download RS-33 (2018)
Is this a hydronic heating system?
Location of Ducts
Location of Air Handler
Is Duct Testing Required? Yes
Maximum Duct Leakage:
Maximum total measured duct leakage per square foot 0.08 CFM25 per sq. ft.
Maximum allowable total measured duct leakage 199 CFM25
A maximum of 10 feet of return ducts and 5 feet of supply ducts are allowed to be located outside of the building thermal envelope, if insulated and sealed per R403.3.7.
Show
Heating System Sizing - Proposed Design Try Out BetterBuiltNW's HVAC Sizing Tool:
Nearest Weather Station
Indoor Design Temperature 70 F
Outdoor Design Temperature 19 F
F
Slab Slab
Perim
Puyallup
Conditioned Space
Show Heating System Sizing?
Area
No
Sum of Perimeter and FP
Slab
Perim
Compliance Certificate
Insulation Certificate
Sum of Area and UA
Distributed
Balanced
Show Distribution System Calculator?
Show Ventilation Calculator?
http://www.energy.wsu.edu/Documents/Duct%20Testing%20Standards%2
Conditioned Space
https://betterbuiltnw.com/resources/hvac-sizing-tool
Link
Prescriptive Checklist
Affidavit, Existing
Affidavit, New
Worksheet
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WSU Code Compliance Calculator, WSEC 2018
Design Temperature Difference (∆T)51 F
Conditioned Floor Area, Proposed Design 2,482 ft2
Conditioned Volume 19,856 ft3 0.00
Leave blank to use default of 8.5 ft. ceiling height
HVAC System Type
Location of HVAC Distribution System Conditioned Space
Sum of UA, including exempt door and window 322
Envelope Heat Load 16,422 Btu / Hour
Sum of UA X ∆T
Air Leakage Heat Load 10,937 Btu / Hour
((Volume X 0.6) X ∆T) X .018))
Building Design Heat Load 27,359 Btu / Hour
Air Leakage + Envelope Heat Loss
Building and Duct Heat Load 27,359 Btu / Hour
For ducts located in unconditioned space: Sum of Building Heat Loss X 1.1
For ducts located in conditioned space or ductless: Sum of Building Heat Loss X 1
Maximum Heat Equipment Output 34,199 Btu / Hour
Building and Duct Heat Loss X 1.25 for heat pumps 10.0 kW
Building and Duct Heat Loss X 1.40 for all other systems
Heat Pump
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WSU Code Compliance Calculator, WSEC 2018
Project Information Messages / Comments *
Plan - 2482A With Guest Suite
Review required for custom entries: - Doors
UA Reduction = 9.79, Proposed UA is better than baseline by 2.6%
Contact Information
Soundbuilt Homes Window area is 11% of floor area
PO Box 73790 -
Puyallup, WA 98373 Whole House Mechanical Ventilation Airflow Rate: 45 CFM with Run Time Percent of 100%, Balanced, Distributed
253-848-0820 Maximum allowable total measured duct leakage: 215 CFM25
ANALYSIS SET UP
What code compliance pathway are you using?
Project Building Type?
Occupancy Type?
Code Version? WSEC-R Rev: Oct. 2023, https://www.sbcc.wa.gov/sites/default/files/2023-12/O
Classification:Medium Dwelling Unit -- 2683 sq. ft.
Baseline Description: Code Baseline - Baseline and proposed window areas are equal.
About Your Selection:Up to 15 sf exempt window and 24 sf exempt door allowable
RESULTS - Comparison of Baseline and Proposed Design **
Component Performance, R occupancies
U *Area UA Area UA
Doors U =0.300 78 23.3 78 17.6
Overhead Glazing U =0.500 0 0.0 0 0.0
Vertical Glazing U =0.300 308 92.4 308 92.4
Flat/Vaulted Ceilings U =0.024 1,806 43.3 1,806 45.2
Wall (above grade) U =0.056 2,943 164.8 2,943 158.9
Floors over Crawlspace U =0.029 1,806 52.4 1,806 52.4
Slab on Grade F =0.540 0 0.0 0 0.0
Below Grade Wall U =N/A 000.0
Below Grade Slab F =N/A 000.0
* Values from Table R402.1.2 (Oct 2023)
Baseline UA Total 376.3 Proposed UA Total 366.5
Required Credits 8.0 Proposed Credits 8.0 from Tables 406.2 and 406.
UA Percent Reduction 3%
UA Reduction 9.8
If the Proposed UA ≤ the Target UA, and the Proposed Credits from Table 406 are ≥ those required in Section R406, then the home meets the WSEC.
** Results assume your inputs are complete and correct. Results do not constitute an approval. Analysis should be reviewed by your AHJ.
Total Credits
(406.2 & 406.3)
8.0
0.300
0.025
0.054
0.029
Proposed Design
U-Factor Compliance Path / Total UA Alternative
U
Baseline
New Construction
R3 Single family dwellings and townhouses
WSEC 2021
0.227
Brief Description of Selected Options*
1.5
Category
Select System TypeSystem No.
4
Option 2.2
Fuel Normalization
Credits (406.2)
1
Option 3.6
5.0
Full Description
For heating system using a heat pump that meets federal standards for the
equipment listed in Table C403.3.2(2) or Table C403.3.2(9) OR Air to Water heat
pump units that are configured to provide both heating and cooling and are rated in
accordance with AHRI 550/590
High Efficiency HVAC
Energy Credits
3.11 High Efficiency HVAC: Smart Thermostat 0.0
Table R406.2 Energy Equalization Credits
3.0Variable Refrigerant Heat Pump or Air-to-
Water Heat Pump
Select Options
Per Section R402.4.1.2 /1.5 ACH50 / For R-2, 0.20 cfm per ft2
at 50 Pa. / HRV with min SHR eff of 0.75 per IRC Section
M1505.3 or IMC Section 403.8
Table R406.3 Energy Credits
Option No.
2 Air Leakage Control and Efficient Ventilation
Efficient Building Envelope
3.1 -3.10
Energy Credits
(406.3)
* Results assume your inputs are complete and correct. Results do not constitute an approval. Analysis should be reviewed by your AHJ.
Air source ducted Heat Pump w/ Min HSPF2 of 10 (HSPF of
11). If htg design temp is 23F or below,a cold climate variable
capacity heat pump is required.
1.0
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WSU Code Compliance Calculator, WSEC 2018
Renewable Electric Energy kWh
Energy Credits
*Refer to WSEC 2015 Table R406.2 for complete option descriptions and requirements
4 Option 4.1
Option 5.6
0.0
0.0
High Efficiency HVAC Distribution System
7 Appliance Package
Efficient Water Heating: Drain Heat Recovery
Efficient Water Heating
Efficient Water Heating: Compact Hot Water Distribution
5.1
5.3-5.8
5.2
6
2.0
5.0
Ducts/distribution system in conditioned space per R403.3.2
Electric resistance, hydronic, ductless and gas fired systems <
80% AFUE systems not permitted
0.0
Electric heat pump water heater meeting NEEA Tier 3.
0.5
0.0
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WSU Code Compliance Calculator, WSEC 2018
THERMAL ENVELOPE DETAILS - Proposed Design
Conditioned Floor Area, Proposed Design 2,683 sq. ft
Classification Medium Dwelling Unit
Exterior Doors
Plan Component Door
ID Description Ref. U Qt. Feet
Inch Feet Inch Area UA
Exempt 00.0
Fiberglass Door Custom 0.15 1 3 6
8 20 3.0 Refer to WSEC R402.1
Solid Core Door Custom 0.17 1 2
8 6 8 18 3.0 Refer to WSEC R402.1
Sliding Door Custom 0.29 1 5 8 40 11.6 Refer to WSEC R402.1
00.0
00.0
00.0
00.0
00.0
00.0
00.0
Sum of Area and UA 78 17.6
0 3
Exterior Doors Area Weighted U 0.227
Overhead Glazing
Plan Component Glazing
ID Description U Feet
Inch Feet Inch
-
-
-
-
-
0.0 0
0 0
Overhead Glazing Area Weighted U
Vertical Glazing Schedule Rows to Show 12
Plan Component Glazing
ID Description U Feet
Inch Feet Inch
Exempt - - -
1 U=0.30 (Code Baseline)Table 406.2 0.30 2 2 5 20.0 6.00
2 U=0.30 (Code Baseline)Table 406.2 0.30 2 8 5 80.0 24.00
3 U=0.30 (Code Baseline)Table 406.2 0.30 2 5 5 50.0 15.00
4 U=0.30 (Code Baseline)Table 406.2 0.30 1 6 5 30.0 9.00
5 U=0.30 (Code Baseline)Table 406.2 0.30 1 6 4 24.0 7.20
6 U=0.30 (Code Baseline)Table 406.2 0.30 1 4 4 16.0 4.80
7 U=0.30 (Code Baseline)Table 406.2 0.30 2 5 4 40.0 12.00
8 U=0.30 (Code Baseline)Table 406.2 0.30 1 6 2 12.0 3.60
9 U=0.30 (Code Baseline)Table 406.2 0.30 1 6 4
6 27.0 8.10
10 U=0.30 (Code Baseline)Table 406.2 0.30 1 3 3 9.0 2.70
11 - -
12 - -
Sum of Area and UA 308.0 92.4
0
Vertical Glazing Area Weighted U 0.300
Vertical Glazing and Doors Area Weighted U 0.285
Flat/Vaulted Ceilings
Plan Component Attic
ID Description U
R60 blown Attic STD baffled 10-7 0.025 1,806 45.2
1,806 45.2
0
Walls (Above Grade)
UA
Area UARef.
Sum of Area and UA
Ref.
Ref.
Height
Notes
Height
Area
Width
Qt.
Sum of Area and UA
Qt. UAArea
HeightWidth
Width
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WSU Code Compliance Calculator, WSEC 2018
Plan Component Wall
ID Description Ref. U UA
R21 cavity+R0 foam INT 2X6W Lap (Code Baseline)10-5 0.054 2,943 159
2,943 159
0
Net Area
Sum of Area and UA
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WSU Code Compliance Calculator, WSEC 2018
Floor (over crawl or exterior)
Plan Component Floor UA
ID Description Ref. U
R30 vented Joist (Code Baseline)10-3 0.029 1,806 52
1,806 52
0
Slab on Grade (less than 2 feet below grade)
Plan Component Slab
ID Description Ref. F FP
00 0
Below Grade Walls and Slabs
Plan Component Slab Wall Wall Wall Slab
ID Description Depth Ref. U Area UA UA
Sum of Area, Length and UA 0 0.0 0 0
0
Links to Download Forms, Checklists and Other Resources
Compliance Certificate Instructions
Insulation Certificate for Residential New Construction
Duct Testing Affadavits
Existing Construction
New Construction
Prescriptive Checklist for 2018 WSEC
Alterations (Remodel) Worksheet
EER SEER2 COP HSPF2 Converter https://www.adicotengineering.com/eer-seer2-cop-hspf2-kwton-converter
Show
Ventilation Requirements
Conditioned Floor Area 2,683 sq. ft.
Number of Bedrooms 1
Run-Time Percent in Each 4-Hour Segment 100%
Is the system Balanced?Verify system meets definition of 'Balanced Whole-House Ventilation'
Is the system Distributed?Verify system meets definition of 'Distributed Whole-House Ventilation'
Ventilation Code Section IRC, Chapter 15
Whole House Mechanical Ventilation Airflow Rate 45 CFM
Show
HVAC Thermal Distribution System Download RS-33 (2018)
Is this a hydronic heating system?
Location of Ducts
Location of Air Handler
Is Duct Testing Required? Yes
Maximum Duct Leakage:
Maximum total measured duct leakage per square foot 0.08 CFM25 per sq. ft.
Maximum allowable total measured duct leakage 215 CFM25
A maximum of 10 feet of return ducts and 5 feet of supply ducts are allowed to be located outside of the building thermal envelope, if insulated and sealed per R403.3.7.
Show
Heating System Sizing - Proposed Design Try Out BetterBuiltNW's HVAC Sizing Tool:
Nearest Weather Station
Indoor Design Temperature 70 F
Outdoor Design Temperature 17 F
F
Slab Slab
Perim
Lacey
Conditioned Space
Show Heating System Sizing?
Area
No
Sum of Perimeter and FP
Slab
Perim
Compliance Certificate
Insulation Certificate
Sum of Area and UA
Distributed
Balanced
Show Distribution System Calculator?
Show Ventilation Calculator?
http://www.energy.wsu.edu/Documents/Duct%20Testing%20Standards%2
Conditioned Space
https://betterbuiltnw.com/resources/hvac-sizing-tool
Link
Prescriptive Checklist
Affidavit, Existing
Affidavit, New
Worksheet
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WSU Code Compliance Calculator, WSEC 2018
Design Temperature Difference (∆T)53 F
Conditioned Floor Area, Proposed Design 2,683 ft2
Conditioned Volume 21,464 ft3 0.00
Leave blank to use default of 8.5 ft. ceiling height
HVAC System Type
Location of HVAC Distribution System Conditioned Space
Sum of UA, including exempt door and window 366
Envelope Heat Load 19,423 Btu / Hour
Sum of UA X ∆T
Air Leakage Heat Load 12,286 Btu / Hour
((Volume X 0.6) X ∆T) X .018))
Building Design Heat Load 31,709 Btu / Hour
Air Leakage + Envelope Heat Loss
Building and Duct Heat Load 31,709 Btu / Hour
For ducts located in unconditioned space: Sum of Building Heat Loss X 1.1
For ducts located in conditioned space or ductless: Sum of Building Heat Loss X 1
Maximum Heat Equipment Output 39,636 Btu / Hour
Building and Duct Heat Loss X 1.25 for heat pumps 11.6 kW
Building and Duct Heat Loss X 1.40 for all other systems
Heat Pump
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WSU Code Compliance Calculator, WSEC 2018
Project Information Messages / Comments *
Plan - 2482B
Review required for custom entries: - Doors
UA Reduction = 8.96, Proposed UA is better than baseline by 2.7%
Contact Information
Soundbuilt Homes Window area is 11% of floor area
PO Box 73790 -
Puyallup, WA 98373 Whole House Mechanical Ventilation Airflow Rate: 40 CFM with Run Time Percent of 100%, Balanced, Distributed
253-848-0820 Maximum allowable total measured duct leakage: 199 CFM25
ANALYSIS SET UP
What code compliance pathway are you using?
Project Building Type?
Occupancy Type?
Code Version? WSEC-R Rev: Oct. 2023, https://www.sbcc.wa.gov/sites/default/files/2023-12/O
Classification:Medium Dwelling Unit -- 2482 sq. ft.
Baseline Description: Code Baseline - Baseline and proposed window areas are equal.
About Your Selection:Up to 15 sf exempt window and 24 sf exempt door allowable
RESULTS - Comparison of Baseline and Proposed Design **
Component Performance, R occupancies
U *Area UA Area UA
Doors U =0.300 78 23.3 78 17.6
Overhead Glazing U =0.500 0 0.0 0 0.0
Vertical Glazing U =0.300 284 85.2 284 85.2
Flat/Vaulted Ceilings U =0.024 1,610 38.6 1,610 40.3
Wall (above grade) U =0.056 2,428 136.0 2,428 131.1
Floors over Crawlspace U =0.029 1,610 46.7 1,610 46.7
Slab on Grade F =0.540 0 0.0 0 0.0
Below Grade Wall U =N/A 000.0
Below Grade Slab F =N/A 000.0
* Values from Table R402.1.2 (Oct 2023)
Baseline UA Total 329.8 Proposed UA Total 320.9
Required Credits 8.0 Proposed Credits 8.0 from Tables 406.2 and 406.
UA Percent Reduction 3%
UA Reduction 9.0
If the Proposed UA ≤ the Target UA, and the Proposed Credits from Table 406 are ≥ those required in Section R406, then the home meets the WSEC.
** Results assume your inputs are complete and correct. Results do not constitute an approval. Analysis should be reviewed by your AHJ.
Total Credits
(406.2 & 406.3)
8.0
0.300
0.025
0.054
0.029
Proposed Design
U-Factor Compliance Path / Total UA Alternative
U
Baseline
New Construction
R3 Single family dwellings and townhouses
WSEC 2021
0.227
Brief Description of Selected Options*
1.5
Category
Select System TypeSystem No.
4
Option 2.2
Fuel Normalization
Credits (406.2)
1
Option 3.6
5.0
Full Description
For heating system using a heat pump that meets federal standards for the
equipment listed in Table C403.3.2(2) or Table C403.3.2(9) OR Air to Water heat
pump units that are configured to provide both heating and cooling and are rated in
accordance with AHRI 550/590
High Efficiency HVAC
Energy Credits
3.11 High Efficiency HVAC: Smart Thermostat 0.0
Table R406.2 Energy Equalization Credits
3.0Variable Refrigerant Heat Pump or Air-to-
Water Heat Pump
Select Options
Per Section R402.4.1.2 /1.5 ACH50 / For R-2, 0.20 cfm per ft2
at 50 Pa. / HRV with min SHR eff of 0.75 per IRC Section
M1505.3 or IMC Section 403.8
Table R406.3 Energy Credits
Option No.
2 Air Leakage Control and Efficient Ventilation
Efficient Building Envelope
3.1 -3.10
Energy Credits
(406.3)
* Results assume your inputs are complete and correct. Results do not constitute an approval. Analysis should be reviewed by your AHJ.
Air source ducted Heat Pump w/ Min HSPF2 of 10 (HSPF of
11). If htg design temp is 23F or below,a cold climate variable
capacity heat pump is required.
1.0
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Renewable Electric Energy kWh
Energy Credits
*Refer to WSEC 2015 Table R406.2 for complete option descriptions and requirements
4 Option 4.1
Option 5.6
0.0
0.0
High Efficiency HVAC Distribution System
7 Appliance Package
Efficient Water Heating: Drain Heat Recovery
Efficient Water Heating
Efficient Water Heating: Compact Hot Water Distribution
5.1
5.3-5.8
5.2
6
2.0
5.0
Ducts/distribution system in conditioned space per R403.3.2
Electric resistance, hydronic, ductless and gas fired systems <
80% AFUE systems not permitted
0.0
Electric heat pump water heater meeting NEEA Tier 3.
0.5
0.0
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THERMAL ENVELOPE DETAILS - Proposed Design
Conditioned Floor Area, Proposed Design 2,482 sq. ft
Classification Medium Dwelling Unit
Exterior Doors
Plan Component Door
ID Description Ref. U Qt. Feet
Inch Feet Inch Area UA
Exempt 00.0
Fiberglass Door Custom 0.15 1 3 6
8 20 3.0 Refer to WSEC R402.1
Solid Core Door Custom 0.17 1 2
8 6 8 18 3.0 Refer to WSEC R402.1
Sliding Door Custom 0.29 1 5 8 40 11.6 Refer to WSEC R402.1
00.0
00.0
00.0
00.0
00.0
00.0
00.0
Sum of Area and UA 78 17.6
0 3
Exterior Doors Area Weighted U 0.227
Overhead Glazing
Plan Component Glazing
ID Description U Feet
Inch Feet Inch
-
-
-
-
-
0.0 0
0 0
Overhead Glazing Area Weighted U
Vertical Glazing Schedule Rows to Show 12
Plan Component Glazing
ID Description U Feet
Inch Feet Inch
Exempt - - -
1 U=0.30 (Code Baseline)Table 406.2 0.30 2 2 5 20.0 6.00
2 U=0.30 (Code Baseline)Table 406.2 0.30 1 8 5 40.0 12.00
3 U=0.30 (Code Baseline)Table 406.2 0.30 3 5 5 75.0 22.50
4 U=0.30 (Code Baseline)Table 406.2 0.30 1 6 5 30.0 9.00
5 U=0.30 (Code Baseline)Table 406.2 0.30 1 6 4 24.0 7.20
6 U=0.30 (Code Baseline)Table 406.2 0.30 1 4 4 16.0 4.80
7 U=0.30 (Code Baseline)Table 406.2 0.30 2 5 4 40.0 12.00
8 U=0.30 (Code Baseline)Table 406.2 0.30 1 6 2 12.0 3.60
9 U=0.30 (Code Baseline)Table 406.2 0.30 1 4 4
6 18.0 5.40
10 U=0.30 (Code Baseline)Table 406.2 0.30 1 3 3 9.0 2.70
11 - -
12 - -
Sum of Area and UA 284.0 85.2
0
Vertical Glazing Area Weighted U 0.300
Vertical Glazing and Doors Area Weighted U 0.284
Flat/Vaulted Ceilings
Plan Component Attic
ID Description U
R60 blown Attic STD baffled 10-7 0.025 1,610 40.3
1,610 40.3
0
Walls (Above Grade)
UA
Area UARef.
Sum of Area and UA
Ref.
Ref.
Height
Notes
Height
Area
Width
Qt.
Sum of Area and UA
Qt. UAArea
HeightWidth
Width
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Plan Component Wall
ID Description Ref. U UA
R21 cavity+R0 foam INT 2X6W Lap (Code Baseline)10-5 0.054 2,428 131
2,428 131
0
Net Area
Sum of Area and UA
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Floor (over crawl or exterior)
Plan Component Floor UA
ID Description Ref. U
R30 vented Joist (Code Baseline)10-3 0.029 1,610 47
1,610 47
0
Slab on Grade (less than 2 feet below grade)
Plan Component Slab
ID Description Ref. F FP
00 0
Below Grade Walls and Slabs
Plan Component Slab Wall Wall Wall Slab
ID Description Depth Ref. U Area UA UA
Sum of Area, Length and UA 0 0.0 0 0
0
Links to Download Forms, Checklists and Other Resources
Compliance Certificate Instructions
Insulation Certificate for Residential New Construction
Duct Testing Affadavits
Existing Construction
New Construction
Prescriptive Checklist for 2018 WSEC
Alterations (Remodel) Worksheet
EER SEER2 COP HSPF2 Converter https://www.adicotengineering.com/eer-seer2-cop-hspf2-kwton-converter
Show
Ventilation Requirements
Conditioned Floor Area 2,482 sq. ft.
Number of Bedrooms 1
Run-Time Percent in Each 4-Hour Segment 100%
Is the system Balanced?Verify system meets definition of 'Balanced Whole-House Ventilation'
Is the system Distributed?Verify system meets definition of 'Distributed Whole-House Ventilation'
Ventilation Code Section IRC, Chapter 15
Whole House Mechanical Ventilation Airflow Rate 40 CFM
Show
HVAC Thermal Distribution System Download RS-33 (2018)
Is this a hydronic heating system?
Location of Ducts
Location of Air Handler
Is Duct Testing Required? Yes
Maximum Duct Leakage:
Maximum total measured duct leakage per square foot 0.08 CFM25 per sq. ft.
Maximum allowable total measured duct leakage 199 CFM25
A maximum of 10 feet of return ducts and 5 feet of supply ducts are allowed to be located outside of the building thermal envelope, if insulated and sealed per R403.3.7.
Show
Heating System Sizing - Proposed Design Try Out BetterBuiltNW's HVAC Sizing Tool:
Nearest Weather Station
Indoor Design Temperature 70 F
Outdoor Design Temperature 17 F
F
Slab Slab
Perim
Lacey
Conditioned Space
Show Heating System Sizing?
Area
No
Sum of Perimeter and FP
Slab
Perim
Compliance Certificate
Insulation Certificate
Sum of Area and UA
Distributed
Balanced
Show Distribution System Calculator?
Show Ventilation Calculator?
http://www.energy.wsu.edu/Documents/Duct%20Testing%20Standards%2
Conditioned Space
https://betterbuiltnw.com/resources/hvac-sizing-tool
Link
Prescriptive Checklist
Affidavit, Existing
Affidavit, New
Worksheet
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Design Temperature Difference (∆T)53 F
Conditioned Floor Area, Proposed Design 2,482 ft2
Conditioned Volume 19,856 ft3 0.00
Leave blank to use default of 8.5 ft. ceiling height
HVAC System Type
Location of HVAC Distribution System Conditioned Space
Sum of UA, including exempt door and window 321
Envelope Heat Load 17,006 Btu / Hour
Sum of UA X ∆T
Air Leakage Heat Load 11,366 Btu / Hour
((Volume X 0.6) X ∆T) X .018))
Building Design Heat Load 28,372 Btu / Hour
Air Leakage + Envelope Heat Loss
Building and Duct Heat Load 28,372 Btu / Hour
For ducts located in unconditioned space: Sum of Building Heat Loss X 1.1
For ducts located in conditioned space or ductless: Sum of Building Heat Loss X 1
Maximum Heat Equipment Output 35,465 Btu / Hour
Building and Duct Heat Loss X 1.25 for heat pumps 10.4 kW
Building and Duct Heat Loss X 1.40 for all other systems
Heat Pump
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Project Information Messages / Comments *
Plan - 2482B Guest Suite
Review required for custom entries: - Doors
UA Reduction = 9.84, Proposed UA is better than baseline by 2.6%
Contact Information
Soundbuilt Homes Window area is 11% of floor area
PO Box 73790 -
Puyallup, WA 98373 Whole House Mechanical Ventilation Airflow Rate: 45 CFM with Run Time Percent of 100%, Balanced, Distributed
253-848-0820 Maximum allowable total measured duct leakage: 215 CFM25
ANALYSIS SET UP
What code compliance pathway are you using?
Project Building Type?
Occupancy Type?
Code Version? WSEC-R Rev: Oct. 2023, https://www.sbcc.wa.gov/sites/default/files/2023-12/O
Classification:Medium Dwelling Unit -- 2683 sq. ft.
Baseline Description: Code Baseline - Baseline and proposed window areas are equal.
About Your Selection:Up to 15 sf exempt window and 24 sf exempt door allowable
RESULTS - Comparison of Baseline and Proposed Design **
Component Performance, R occupancies
U *Area UA Area UA
Doors U =0.300 78 23.3 78 17.6
Overhead Glazing U =0.500 0 0.0 0 0.0
Vertical Glazing U =0.300 299 89.7 299 89.7
Flat/Vaulted Ceilings U =0.024 1,810 43.4 1,810 45.3
Wall (above grade) U =0.056 2,968 166.2 2,968 160.3
Floors over Crawlspace U =0.029 1,810 52.5 1,810 52.5
Slab on Grade F =0.540 0 0.0 0 0.0
Below Grade Wall U =N/A 000.0
Below Grade Slab F =N/A 000.0
* Values from Table R402.1.2 (Oct 2023)
Baseline UA Total 375.2 Proposed UA Total 365.3
Required Credits 8.0 Proposed Credits 8.0 from Tables 406.2 and 406.
UA Percent Reduction 3%
UA Reduction 9.8
If the Proposed UA ≤ the Target UA, and the Proposed Credits from Table 406 are ≥ those required in Section R406, then the home meets the WSEC.
** Results assume your inputs are complete and correct. Results do not constitute an approval. Analysis should be reviewed by your AHJ.
Total Credits
(406.2 & 406.3)
8.0
0.300
0.025
0.054
0.029
Proposed Design
U-Factor Compliance Path / Total UA Alternative
U
Baseline
New Construction
R3 Single family dwellings and townhouses
WSEC 2021
0.227
Brief Description of Selected Options*
1.5
Category
Select System TypeSystem No.
4
Option 2.2
Fuel Normalization
Credits (406.2)
1
Option 3.6
5.0
Full Description
For heating system using a heat pump that meets federal standards for the
equipment listed in Table C403.3.2(2) or Table C403.3.2(9) OR Air to Water heat
pump units that are configured to provide both heating and cooling and are rated in
accordance with AHRI 550/590
High Efficiency HVAC
Energy Credits
3.11 High Efficiency HVAC: Smart Thermostat 0.0
Table R406.2 Energy Equalization Credits
3.0Variable Refrigerant Heat Pump or Air-to-
Water Heat Pump
Select Options
Per Section R402.4.1.2 /1.5 ACH50 / For R-2, 0.20 cfm per ft2
at 50 Pa. / HRV with min SHR eff of 0.75 per IRC Section
M1505.3 or IMC Section 403.8
Table R406.3 Energy Credits
Option No.
2 Air Leakage Control and Efficient Ventilation
Efficient Building Envelope
3.1 -3.10
Energy Credits
(406.3)
* Results assume your inputs are complete and correct. Results do not constitute an approval. Analysis should be reviewed by your AHJ.
Air source ducted Heat Pump w/ Min HSPF2 of 10 (HSPF of
11). If htg design temp is 23F or below,a cold climate variable
capacity heat pump is required.
1.0
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Renewable Electric Energy kWh
Energy Credits
*Refer to WSEC 2015 Table R406.2 for complete option descriptions and requirements
4 Option 4.1
Option 5.6
0.0
0.0
High Efficiency HVAC Distribution System
7 Appliance Package
Efficient Water Heating: Drain Heat Recovery
Efficient Water Heating
Efficient Water Heating: Compact Hot Water Distribution
5.1
5.3-5.8
5.2
6
2.0
5.0
Ducts/distribution system in conditioned space per R403.3.2
Electric resistance, hydronic, ductless and gas fired systems <
80% AFUE systems not permitted
0.0
Electric heat pump water heater meeting NEEA Tier 3.
0.5
0.0
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THERMAL ENVELOPE DETAILS - Proposed Design
Conditioned Floor Area, Proposed Design 2,683 sq. ft
Classification Medium Dwelling Unit
Exterior Doors
Plan Component Door
ID Description Ref. U Qt. Feet
Inch Feet Inch Area UA
Exempt 00.0
Fiberglass Door Custom 0.15 1 3 6
8 20 3.0 Refer to WSEC R402.1
Solid Core Door Custom 0.17 1 2
8 6 8 18 3.0 Refer to WSEC R402.1
Sliding Door Custom 0.29 1 5 8 40 11.6 Refer to WSEC R402.1
00.0
00.0
00.0
00.0
00.0
00.0
00.0
Sum of Area and UA 78 17.6
0 3
Exterior Doors Area Weighted U 0.227
Overhead Glazing
Plan Component Glazing
ID Description U Feet
Inch Feet Inch
-
-
-
-
-
0.0 0
0 0
Overhead Glazing Area Weighted U
Vertical Glazing Schedule Rows to Show 12
Plan Component Glazing
ID Description U Feet
Inch Feet Inch
Exempt - - -
1 U=0.30 (Code Baseline)Table 406.2 0.30 2 2 5 20.0 6.00
2 U=0.30 (Code Baseline)Table 406.2 0.30 2 8 5 80.0 24.00
3 U=0.30 (Code Baseline)Table 406.2 0.30 2 5 5 50.0 15.00
4 U=0.30 (Code Baseline)Table 406.2 0.30 1 6 5 30.0 9.00
5 U=0.30 (Code Baseline)Table 406.2 0.30 1 6 4 24.0 7.20
6 U=0.30 (Code Baseline)Table 406.2 0.30 1 4 4 16.0 4.80
7 U=0.30 (Code Baseline)Table 406.2 0.30 2 5 4 40.0 12.00
8 U=0.30 (Code Baseline)Table 406.2 0.30 1 6 2 12.0 3.60
9 U=0.30 (Code Baseline)Table 406.2 0.30 1 4 4
6 18.0 5.40
10 U=0.30 (Code Baseline)Table 406.2 0.30 1 3 3 9.0 2.70
11 - -
12 - -
Sum of Area and UA 299.0 89.7
0
Vertical Glazing Area Weighted U 0.300
Vertical Glazing and Doors Area Weighted U 0.285
Flat/Vaulted Ceilings
Plan Component Attic
ID Description U
R60 blown Attic STD baffled 10-7 0.025 1,810 45.3
1,810 45.3
0
Walls (Above Grade)
UA
Area UARef.
Sum of Area and UA
Ref.
Ref.
Height
Notes
Height
Area
Width
Qt.
Sum of Area and UA
Qt. UAArea
HeightWidth
Width
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Plan Component Wall
ID Description Ref. U UA
R21 cavity+R0 foam INT 2X6W Lap (Code Baseline)10-5 0.054 2,968 160
2,968 160
0
Net Area
Sum of Area and UA
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Floor (over crawl or exterior)
Plan Component Floor UA
ID Description Ref. U
R30 vented Joist (Code Baseline)10-3 0.029 1,810 52
1,810 52
0
Slab on Grade (less than 2 feet below grade)
Plan Component Slab
ID Description Ref. F FP
00 0
Below Grade Walls and Slabs
Plan Component Slab Wall Wall Wall Slab
ID Description Depth Ref. U Area UA UA
Sum of Area, Length and UA 0 0.0 0 0
0
Links to Download Forms, Checklists and Other Resources
Compliance Certificate Instructions
Insulation Certificate for Residential New Construction
Duct Testing Affadavits
Existing Construction
New Construction
Prescriptive Checklist for 2018 WSEC
Alterations (Remodel) Worksheet
EER SEER2 COP HSPF2 Converter https://www.adicotengineering.com/eer-seer2-cop-hspf2-kwton-converter
Show
Ventilation Requirements
Conditioned Floor Area 2,683 sq. ft.
Number of Bedrooms 1
Run-Time Percent in Each 4-Hour Segment 100%
Is the system Balanced?Verify system meets definition of 'Balanced Whole-House Ventilation'
Is the system Distributed?Verify system meets definition of 'Distributed Whole-House Ventilation'
Ventilation Code Section IRC, Chapter 15
Whole House Mechanical Ventilation Airflow Rate 45 CFM
Show
HVAC Thermal Distribution System Download RS-33 (2018)
Is this a hydronic heating system?
Location of Ducts
Location of Air Handler
Is Duct Testing Required? Yes
Maximum Duct Leakage:
Maximum total measured duct leakage per square foot 0.08 CFM25 per sq. ft.
Maximum allowable total measured duct leakage 215 CFM25
A maximum of 10 feet of return ducts and 5 feet of supply ducts are allowed to be located outside of the building thermal envelope, if insulated and sealed per R403.3.7.
Show
Heating System Sizing - Proposed Design Try Out BetterBuiltNW's HVAC Sizing Tool:
Nearest Weather Station
Indoor Design Temperature 70 F
Outdoor Design Temperature 17 F
F
Slab Slab
Perim
Lacey
Conditioned Space
Show Heating System Sizing?
Area
No
Sum of Perimeter and FP
Slab
Perim
Compliance Certificate
Insulation Certificate
Sum of Area and UA
Distributed
Balanced
Show Distribution System Calculator?
Show Ventilation Calculator?
http://www.energy.wsu.edu/Documents/Duct%20Testing%20Standards%2
Conditioned Space
https://betterbuiltnw.com/resources/hvac-sizing-tool
Link
Prescriptive Checklist
Affidavit, Existing
Affidavit, New
Worksheet
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Design Temperature Difference (∆T)53 F
Conditioned Floor Area, Proposed Design 2,683 ft2
Conditioned Volume 21,464 ft3 0.00
Leave blank to use default of 8.5 ft. ceiling height
HVAC System Type
Location of HVAC Distribution System Conditioned Space
Sum of UA, including exempt door and window 365
Envelope Heat Load 19,363 Btu / Hour
Sum of UA X ∆T
Air Leakage Heat Load 12,286 Btu / Hour
((Volume X 0.6) X ∆T) X .018))
Building Design Heat Load 31,649 Btu / Hour
Air Leakage + Envelope Heat Loss
Building and Duct Heat Load 31,649 Btu / Hour
For ducts located in unconditioned space: Sum of Building Heat Loss X 1.1
For ducts located in conditioned space or ductless: Sum of Building Heat Loss X 1
Maximum Heat Equipment Output 39,561 Btu / Hour
Building and Duct Heat Loss X 1.25 for heat pumps 11.6 kW
Building and Duct Heat Loss X 1.40 for all other systems
Heat Pump
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