Wash. Admin. Code § 51-11C-40620
For mixed fuel space heating systems, the number of space heating energy efficiency credits available for measures with a prorating flag "Heat" are calculated using the following equation:
For mixed fuel service water heating systems, the number of service water heating energy efficiency credits available for measures with a prorating flag "SWH" are calculated using the following equation:
Table C406.2(1)
Efficiency Measure Credits
Measure Title | Applicable Section | Prorating Flag | Occupancy Group | |||||
Group R-1 | Group R-2 | Group B | Group E | Group M | All Other | |||
1. Dwelling unit HVAC control | C406.2.1 | Heat | NA | 7 | NA | NA | NA | NA |
2. Improved HVAC TSPRa | C406.2.2.1 | Heat | NA | 8 | 11 | 17 | 22 | NA |
3. Improve cooling and fan efficiency | C406.2.2.2 | Heat | 2 | 2 | 3 | 4 | 3 | 2 |
4. Improve heating efficiency | C406.2.2.3 | Heat | 2 | 3 | 3 | 10 | 16 | 7 |
5. Improved low-carbon district energy system (10% better) | C406.2.2.4 | 3 | 3 | 4 | 11 | 17 | 8 | |
6. Improved low-carbon district energy system (20% better)b | C406.2.2.5 | 9 | 10 | 12 | 33 | 52 | 24 | |
7. High performance DOAS | C406.2.2.6 | Heat | 31 | 31 | 21 | 39 | 40 | 21/ (A) 40c |
8. Fault detection &diagnostics (FDD) | C406.2.2.7 | Heat | 2 | 2 | 2 | 6 | 9 | 4 |
9. 10% reduced lighting power | C406.2.3.1 | Heat | 7 | 4 | 18 | 16 | 20 | 15 |
10. 20% reduced lighting powerd | C406.2.3.2 | Heat | 13 | 8 | 36 | 32 | 40 | 29 |
11. Lamp efficacy improvement | C406.2.3.3 | Heat | 5 | 6 | NA | NA | NA | NA |
12. Residential lighting control | C406.2.4.1 | Heat | NA | 8 | NA | NA | NA | NA |
13. Enhanced lighting control | C406.2.4.2 | Heat | 1 | 1 | 6 | 6 | 11 | 6 |
14. Renewable energy | C406.2.5 | 7 | 12 | 13 | 13 | 10 | 11 | |
15. Shower drain heat recovery | C406.2.6.1 | SWH | 9 | 30 | NA | 3 | NA | NA |
16. Service water heat recovery | C406.2.6.2 | SWH | 35 | 111 | 13 | 14 | (Grocery) 41e | NA |
17. Heat pump water heating | C406.2.6.3 | SWH | 72 | 54 | 1 | 13 | 5 | 29f |
18. High efficiency service water heating, gas-fired | C406.2.6.4 | SWH | NA | NA | NA | NA | NA | NA |
19. Heat trace system | C406.2.7.1 | SWH | 6 | 13 | 4 | 1 | NA | 6 |
20. Point of use water heater | C406.2.7.2 | SWH | NA | NA | 19 | 5 | NA | NA |
21. Service hot water distribution right sizing | C406.2.8 | 13 | 42 | NA | NA | NA | NA | |
22. High performance service hot water temperature maintenance system | C406.2.9 | 6 | 13 | 4 | 1 | NA | 6 | |
23. High efficiency service hot water circulation system | C406.2.10 | 3 | 6 | 2 | 1 | NA | 4 | |
24. Low flow residential showerheads | C406.2.11 | SWH | 3 | 3 | NA | NA | NA | NA |
25. Enhanced envelope performanceg | C406.2.12 | Heat | 24 | 20 | 13 | 5 | 19 | 14 |
26. Base reduced air leakageg | C406.2.13.1 | 29 | 24 | 6 | 3 | 9 | 11 | |
27. Enhanced reduced air leakageg | C406.2.13.2 | Heat | 53 | 44 | 11 | 5 | 16 | 20 |
28. Enhanced commercial kitchen equipment | C406.2.14 | Heat | 30h | 18h | 18h | 30h | 30h | 31h |
29. Enhanced residential kitchen equipment | C406.2.15 | Heat | 12 | 19 | NA | NA | NA | NA |
30. Enhanced residential laundry equipment | C406.2.16 | Heat | NA | 6 | NA | NA | NA | NA |
31. Heat pump clothes dryers | C406.2.17 | Heat | 6 | 6 | NA | NA | NA | NA |
32. Efficient elevator equipment | C406.2.18 | Heat | 3 | 5 | 5 | 5 | 4 | 4 |
a Projects using Item 2 shall not use Items 3, 4, or 7.
b Projects using C406.2.2.5 shall not use C406.2.2.4.
c For C406.2.2.6, occupancy Group A achieves 40 credits while other occupancy groups within the "all other" category achieve 21 credits.
d Projects using C406.2.3.2 shall not use C406.2.3.1.
e Service water heat recovery and heat pump water heating are available in Group M only for grocery stores larger than 10,000 ft2. Large mixed retail with full grocery and butcher sections shall achieve half the credits. This credit is not available where refrigeration recovery to heat service hot water is used to meet the requirements of Section C403.9.2.3.
f Heat pump water heating efficiency credits are available in the "all other" category only for Group A-2.
g Buildings or building areas that are exempt from the thermal envelope requirements in accordance with Sections C402.1.1 and C402.1.2, do not qualify for this package.
h Additional energy efficiency credits, up to the maximum shown in Table C406.2(1), shall be calculated according to Section C406.2.14.
Table C406.2(2)
Efficiency Measure Credits for use with Fossil Fuel Compliance Path
Measure Title | Applicable Section | Prorating Flag | Occupancy Group | |||||
Group R-1 | Group R-2 | Group B | Group E | Group M | All Other | |||
1. Dwelling unit HVAC control | C406.2.1 | Heat | NA | 8 | NA | NA | NA | NA |
2. Improved HVAC TSPRa | C406.2.2.1 | Heat | NA | 9 | 12 | 19 | 24 | NA |
3. Improve cooling and fan efficiency | C406.2.2.2 | Heat | 12 | 8 | 14 | 8 | 10 | 10 |
4. Improve heating efficiency | C406.2.2.3 | Heat | 2 | 3 | 3 | 11 | 18 | 8 |
5. Improved low-carbon district energy system (10% better) | C406.2.2.4 | 3 | 3 | 4 | 12 | 19 | 9 | |
6. Improved low-carbon district energy system (20% better)b | C406.2.2.5 | 10 | 11 | 13 | 36 | 57 | 26 | |
7. High performance DOAS | C406.2.2.6 | Heat | 34 | 34 | 23 | 43 | 44 | 23/ (A) 40c |
8. Fault detection & diagnostics (FDD) | C406.2.2.7 | Heat | 2 | 2 | 2 | 6 | 9 | 4 |
9. 10% reduced lighting power | C406.2.3.1 | Heat | 7 | 4 | 18 | 16 | 20 | 15 |
10. 20% reduced lighting powerd | C406.2.3.2 | Heat | 13 | 8 | 36 | 32 | 40 | 29 |
11. Lamp efficacy improvement | C406.2.3.3 | Heat | 5 | 6 | NA | NA | NA | NA |
12. Residential lighting control | C406.2.4.1 | Heat | NA | 8 | NA | NA | NA | NA |
13. Enhanced lighting control | C406.2.4.2 | Heat | 1 | 1 | 6 | 6 | 11 | 6 |
14. Renewable energy | C406.2.5 | 7 | 12 | 13 | 13 | 10 | 11 | |
15. Shower drain heat recovery | C406.2.6.1 | SWH | 10 | 33 | NA | 3 | NA | NA |
16. Service water heat recovery | C406.2.6.2 | SWH | 35 | 111 | 13 | 14 | (Grocery) 41e | NA |
17. Heat pump water heating | C406.2.6.3 | SWH | 135 | 163 | 17 | 33 | (Grocery) 95e | (A-2) 95f |
18. High efficiency service water heating, gas-fired | C406.2.6.4 | SWH | 59 | 65 | 6 | 11 | 18 | 32 |
19. Heat trace system | C406.2.7.1 | SWH | 6 | 13 | 4 | 1 | NA | 6 |
20. Point of use water heater | C406.2.7.2 | SWH | NA | NA | 19 | 5 | NA | NA |
21. Service hot water distribution right sizing | C406.2.8 | 13 | 42 | NA | NA | NA | NA | |
22. High performance service hot water temperature maintenance system | C406.2.9 | 6 | 13 | 4 | 1 | NA | 6 | |
23. High efficiency service hot water circulation system | C406.2.10 | 3 | 6 | 2 | 1 | NA | 4 | |
24. Low flow residential showerheads | C406.2.11 | SWH | 3 | 3 | NA | NA | NA | NA |
25. Enhanced envelope performanceg | C406.2.12 | Heat | 24 | 20 | 13 | 5 | 19 | 14 |
26. Base reduced air leakageg | C406.2.13.1 | 29 | 24 | 6 | 3 | 9 | 11 | |
27. Enhanced reduced air leakageg | C406.2.13.2 | Heat | 53 | 44 | 11 | 5 | 16 | 20 |
28. Enhanced commercial kitchen equipment | C406.2.14 | Heat | 30h | 18h | 18h | 30h | 30h | 31h |
29. Enhanced residential kitchen equipment | C406.2.15 | Heat | 12 | 19 | NA | NA | NA | NA |
30. Enhanced residential laundry equipment | C406.2.16 | Heat | NA | 6 | NA | NA | NA | NA |
31. Heat pump clothes dryers | C406.2.17 | Heat | 6 | 6 | NA | NA | NA | NA |
32. Efficient elevator equipment | C406.2.18 | Heat | 3 | 5 | 5 | 5 | 4 | 4 |
a Projects using Item 2 shall not use Items 3, 4, or 7.
b Projects using C406.2.2.5 shall not use C406.2.2.4.
c For C406.2.2.6, occupancy Group A achieves 40 credits while other occupancy groups within the "all other" category achieve 21 credits.
d Projects using C406.2.3.2 shall not use C406.2.3.1.
e Service water heat recovery and heat pump water heating are available in Group M only for grocery stores larger than 10,000 ft2. Large mixed retail with full grocery and butcher sections shall achieve half the credits. This credit is not available where refrigeration recovery to heat service hot water is used to meet the requirements of Section C403.9.2.3.
f Heat pump water heating efficiency credits are available in the "all other" category only for Group A-2.
g Buildings or building areas that are exempt from the thermal envelope requirements in accordance with Sections C402.1.1 and C402.1.2, do not qualify for this package.
h Additional energy efficiency credits, up to the maximum shown in Table C406.2(2), shall be calculated according to Section C406.2.14.
Wash. Admin. Code § 51-11C-40620