(Effective July 1, 2023)

PDFWAC 51-11C-403329

Tables C403.3.2(9) through C403.3.2(16)—HVAC equipment minimum efficiency requirements.

Table C403.3.2(9)
Electrically Operated Variable Refrigerant Flow Air-to-Air and Applied Heat Pumps—Minimum Efficiency Requirementsb
Equipment Type
Size Category
Heating Section Type
Subcategory or Rating Condition
Minimum Efficiency
Test Procedurea
 
< 65,000 Btu/h
All
VRF Multi-Split System
13.0 SEER
 
 
≥ 65,000 Btu/h and < 135,000 Btu/h
Electric Resistance
(or none)
VRF Multi-Split System
11.0 EER
14.6 IEER
 
 
≥ 65,000 Btu/h and < 135,000 Btu/h
Electric Resistance
(or none)
VRF Multi-Split System with Heat Recovery
10.8 EER
14.4 IEER
 
VRF Air Cooled (cooling mode)
≥ 135,000 Btu/h and < 240,000 Btu/h
Electric Resistance
(or none)
VRF Multi-Split System
10.6 EER
13.9 IEER
AHRI 1230
 
≥ 135,000 Btu/h and < 240,000 Btu/h
Electric Resistance
(or none)
VRF Multi-Split System with Heat Recovery
10.4 EER
13.7 IEER
 
 
≥ 240,000 Btu/h
Electric Resistance
(or none)
VRF Multi-Split System
9.5 EER
12.7 IEER
 
 
≥ 240,000 Btu/h
Electric Resistance
(or none)
VRF Multi-Split System with Heat Recovery
9.3 EER
12.5 IEER
 
 
< 65,000 Btu/h
All
VRF Multi-Split System
86ºF entering water
12.0 EER
16.0 IEER
 
 
< 65,000 Btu/h
All
VRF Multi-Split System with Heat Recovery
86ºF entering water
11.8 EER
15.8 IEER
 
 
≥ 65,000 Btu/h and < 135,000 Btu/h
All
VRF Multi-Split System
86ºF entering water
12.0 EER
16.0 IEER
 
VRF Water Source
(cooling mode)
≥ 65,000 Btu/h and < 135,000 Btu/h
All
VRF Multi-Split System with Heat Recovery
86ºF entering water
11.8 EER
15.8 IEER
AHRI 1230
 
≥ 135,000 Btu/h and < 240,000 Btu/h
All
VRF Multi-Split System
86ºF entering water
10.0 EER
14.0 IEER
 
 
≥ 135,000 Btu/h and < 240,000 Btu/h
All
VRF Multi-Split System with Heat Recovery
86ºF entering water
9.8 EER
13.8 IEER
 
 
≥ 240,000 Btu/h
All
VRF Multi-Split System
86ºF entering water
10.0 EER
12.0 IEER
 
 
≥ 240,000 Btu/h
All
VRF Multi-Split System with Heat Recovery
86ºF entering water
9.8 EER
11.8 IEER
 
 
< 135,000 Btu/h
All
VRF Multi-Split System
59ºF entering water
16.2 EER
 
< 135,000 Btu/h
All
VRF Multi-Split System with Heat Recovery
59ºF entering water
16.0 EER
 
VRF Groundwater Source
(cooling mode)
≥ 135,000 Btu/h
All
VRF Multi-Split System
59ºF entering water
13.8 EER
AHRI 1230
 
≥ 135,000 Btu/h
All
VRF Multi-Split System with Heat Recovery
59ºF entering water
13.6 EER
 
 
< 135,000 Btu/h
All
VRF Multi-Split System
77ºF entering water
13.4 EER
 
VRF Ground Source
(cooling mode)
< 135,000 Btu/h
All
VRF Multi-Split System with Heat Recovery
77ºF entering water
13.2 EER
AHRI 1230
 
≥ 135,000 Btu/h
All
VRF Multi-Split System
77ºF entering water
11.0 EER
 
 
≥ 135,000 Btu/h
All
VRF Multi-Split System with Heat Recovery
77ºF entering water
10.8 EER
 
 
< 65,000 Btu/h
(cooling capacity)
 
VRF Multi-Split System
7.7 HSPF
 
VRF Air Cooled
(heating mode)
≥ 65,000 Btu/h and < 135,000 Btu/h
(cooling capacity)
 
VRF Multi-Split System
47ºF db/43ºF wb outdoor air
17ºF db/15ºF wb outdoor air
3.3 COP
2.25 COP
AHRI 1230
 
≥ 135,000 Btu/h
(cooling capacity)
 
VRF Multi-Split System
47ºF db/43ºF wb outdoor air
17ºF db/15ºF wb outdoor air
3.2 COP
2.05 COP
 
 
< 65,000 Btu/h
(cooling capacity)
 
VRF Multi-Split System
68ºF entering water
4.3 COP
 
 
≥ 65,000 Btu/h and
< 135,000 Btu/h
(cooling capacity)
 
VRF Multi-Split System
68ºF entering water
4.3 COP
 
VRF Water Source
(heating mode)
≥ 135,000 Btu/h and < 240,000 Btu/h
(cooling capacity)
 
VRF Multi-Split System
68ºF entering water
4.0 COP
AHRI 1230
 
≥ 240,000 Btu/h
(cooling capacity)
 
VRF Multi-Split System
68ºF entering water
3.9 COP
 
VRF Groundwater Source
< 135,000 Btu/h
(cooling capacity)
 
VRF Multi-Split System
50ºF entering water
3.6 COP
AHRI 1230
(heating mode)
≥ 135,000 Btu/h
(cooling capacity)
 
VRF Multi-Split System
50ºF entering water
3.3 COP
 
VRF Ground Source
< 135,000 Btu/h
(cooling capacity)
 
VRF Multi-Split System
32ºF entering water
3.1 COP
AHRI 1230
(heating mode)
≥ 135,000 Btu/h
(cooling capacity)
 
VRF Multi-Split System
32ºF entering water
2.8 COP
 
For SI: °C = [(°F) - 32]/1.8, 1 British thermal unit per hour = 0.2931 W, db = dry bulb temperature, wb = wet bulb temperature.
a
Chapter 6 contains a complete specification of the referenced standards, which include test procedures, including the reference year version of the test procedure.
b
This table is a replica of ASHRAE 90.1 Table 6.8.1-9 Electrically Operated Variable-Refrigerant-Flow and Applied Heat Pumps—Minimum Efficiency Requirements.
Table C403.3.2(10)
Floor-Mounted Air Conditioners and Condensing Units Serving Computer Rooms—Minimum Efficiency Requirementsb
Equipment Type
Standard Model
Net Sensible Cooling Capacity
Minimum Net Sensible COP
Rating Conditions Return Air (dry bulb/dew point)
Test Procedurea
Air cooled
Downflow
< 80,000 Btu/h
2.70
85°F/52°F (Class 2)
AHRI 1360
≥ 80,000 Btu/h and < 295,000 Btu/h
2.58
≥ 295,000 Btu/h
2.36
Upflow - Ducted
< 80,000 Btu/h
2.67
≥ 80,000 Btu/h and < 295,000 Btu/h
2.55
≥ 295,000 Btu/h
2.33
 
Upflow - Nonducted
˃ 65,000 Btu/h
2.16
75°F/52°F (Class 1)
 
≥ 65,000 Btu/h and < 240,000 Btu/h
2.04
≥ 240,000 Btu/h
1.89
Horizontal
˃ 65,000 Btu/h
2.65
 
≥ 65,000 Btu/h and < 240,000 Btu/h
2.55
95°F/52°F (Class 3)
≥ 240,000 Btu/h
2.47
 
Air cooled with fluid economizer
Downflow
< 80,000 Btu/h
2.70
85°F/52°F (Class 1)
AHRI 1360
≥ 80,000 Btu/h and < 295,000 Btu/h
2.58
≥ 295,000 Btu/h
2.36
Upflow - Ducted
< 80,000 Btu/h
2.67
≥ 80,000 Btu/h and < 295,000 Btu/h
2.55
≥ 295,000 Btu/h
2.33
 
Upflow - Nonducted
˃ 65,000 Btu/h
2.09
75°F/52°F (Class 1)
 
≥ 65,000 Btu/h and < 240,000 Btu/h
1.99
≥ 240,000 Btu/h
1.81
Horizontal
˃ 65,000 Btu/h
2.65
 
≥ 65,000 Btu/h and < 240,000 Btu/h
2.55
95°F/52°F (Class 3)
≥ 240,000 Btu/h
2.47
 
Water cooled
Downflow
< 80,000 Btu/h
2.82
85°F/52°F (Class 1)
AHRI 1360
≥ 80,000 Btu/h and < 295,000 Btu/h
2.73
≥ 295,000 Btu/h
2.67
Upflow - Ducted
< 80,000 Btu/h
2.79
≥ 80,000 Btu/h and < 295,000 Btu/h
2.70
≥ 295,000 Btu/h
2.64
 
Upflow - Nonducted
˃ 65,000 Btu/h
2.43
75°F/52°F (Class 1)
 
≥ 65,000 Btu/h and < 240,000 Btu/h
2.32
≥ 240,000 Btu/h
2.20
Horizontal
˃ 65,000 Btu/h
2.79
 
≥ 65,000 Btu/h and < 240,000 Btu/h
2.68
95°F/52°F (Class 3)
≥ 240,000 Btu/h
2.60
 
Water cooled with fluid economizer
Downflow
< 80,000 Btu/h
2.77
85°F/52°F (Class 1)
AHRI 1360
≥ 80,000 Btu/h and < 295,000 Btu/h
2.68
≥ 295,000 Btu/h
2.61
Upflow - Ducted
< 80,000 Btu/h
2.74
≥ 80,000 Btu/h and < 295,000 Btu/h
2.65
≥ 295,000 Btu/h
2.58
 
Upflow - Nonducted
˃ 65,000 Btu/h
2.35
75°F/52°F (Class 1)
 
≥ 65,000 Btu/h and < 240,000 Btu/h
2.24
≥ 240,000 Btu/h
2.12
Horizontal
˃ 65,000 Btu/h
2.71
 
≥ 65,000 Btu/h and < 240,000 Btu/h
2.60
95°F/52°F (Class 3)
≥ 240,000 Btu/h
2.54
 
 
Glycol cooled
Downflow
< 80,000 Btu/h
2.56
85°F/52°F (Class 1)
AHRI 1360
≥ 80,000 Btu/h and < 295,000 Btu/h
2.24
≥ 295,000 Btu/h
2.21
Upflow - Ducted
< 80,000 Btu/h
2.53
≥ 80,000 Btu/h and < 295,000 Btu/h
2.21
≥ 295,000 Btu/h
2.18
 
Upflow - Nonducted
˃ 65,000 Btu/h
2.08
75°F/52°F (Class 1)
 
≥ 65,000 Btu/h and < 240,000 Btu/h
1.90
≥ 240,000 Btu/h
1.81
Horizontal
˃ 65,000 Btu/h
2.48
 
≥ 65,000 Btu/h and < 240,000 Btu/h
2.18
95°F/52°F (Class 3)
≥ 240,000 Btu/h
2.18
 
Glycol cooled with fluid economizer
Downflow
< 80,000 Btu/h
2.51
85°F/52°F (Class 1)
AHRI 1360
≥ 80,000 Btu/h and < 295,000 Btu/h
2.19
≥ 295,000 Btu/h
2.15
Upflow - Ducted
< 80,000 Btu/h
2.48
≥ 80,000 Btu/h and < 295,000 Btu/h
2.16
≥ 295,000 Btu/h
2.12
 
Upflow - Nonducted
˃ 65,000 Btu/h
2.00
75°F/52°F (Class 1)
 
≥ 65,000 Btu/h and < 240,000 Btu/h
1.82
≥ 240,000 Btu/h
1.73
Horizontal
˃ 65,000 Btu/h
2.44
 
≥ 65,000 Btu/h and < 240,000 Btu/h
2.10
95°F/52°F (Class 3)
≥ 240,000 Btu/h
2.10
 
For SI: 1 British thermal unit per hour = 0.2931 W, °C = [(°F) - 32]/1.8.
a
Chapter 6 contains a complete specification of the referenced standards, which include test procedures, including the reference year version of the test procedure.
b
This table is a replica of ASHRAE 90.1 Table 6.8.1-10 Floor-Mounted Air Conditioners and Condensing Units Serving Computer Rooms—Minimum Efficiency Requirements.
Table C403.3.2(11)
Vapor-Compression-Based Indoor Pool Dehumidifiers—Minimum Efficiency Requirementsb
Equipment Type
Subcategory or Rating Condition
Minimum Efficiency
Test Procedurea
Single package indoor (with or without economizer)
Rating Conditions: A or C
3.5 MRE
AHRI 910
Single package indoor water cooled (with or without economizer)
Rating Conditions: A, B or C
3.5 MRE
Single package indoor air cooled (with or without economizer)
Rating Conditions: A, B or C
3.5 MRE
Split system indoor air cooled (with or without economizer)
Rating Conditions: A, B or C
3.5 MRE
a
Chapter 6 contains a complete specification of the referenced standards, which include test procedures, including the reference year version of the test procedure.
b
This table is a replica of ASHRAE 90.1 Table 6.8.1-11 Vapor-Compressor-Based Indoor Pool Dehumidifiers—Minimum Efficiency Requirements.
Table C403.3.2(12)
Electrically Operated DX-DOAS Units, Single-Package and Remote Condenser, Without Energy Recovery—Minimum Efficiency Requirementsb
Equipment Type
Subcategory or Rating Condition
Minimum Efficiency
Test Procedurea
Air cooled
(dehumidification mode)
 
4.0 ISMRE
AHRI 920
Air source heat pumps
(dehumidification mode)
 
4.0 ISMRE
AHRI 920
Water cooled
(dehumidification mode)
Cooling tower condenser water
4.9 ISMRE
AHRI 920
Chilled water
6.0 ISMRE
Air source heat pump
(heating mode)
 
2.7 ISCOP
AHRI 920
Water source heat pump
(dehumidification mode)
Ground source, closed loop
4.8 ISMRE
AHRI 920
Ground-water source
5.0 ISMRE
Water source
4.0 ISMRE
Water source heat pump
(heating mode)
Ground source, closed loop
2.0 ISCOP
AHRI 920
Ground-water source
3.2 ISCOP
Water source
3.5 ISCOP
a
Chapter 6 contains a complete specification of the referenced standards, which include test procedures, including the reference year version of the test procedure.
b
This table is a replica of ASHRAE 90.1 Table 6.8.1-13 Electrically Operated DX-DOAS Units, Single-Package and Remote Condenser, without Energy Recovery—Minimum Efficiency Requirements.
Table C403.3.2(13)
Electrically Operated DX-DOAS Units, Single-Package and Remote Condenser, with Energy Recovery—Minimum Efficiency Requirementsb
Equipment Type
Subcategory or Rating Condition
Minimum Efficiency
Test Procedurea
Air cooled
(dehumidification mode)
 
5.2 ISMRE
AHRI 920
Air source heat pumps
(dehumidification mode)
 
5.2 ISMRE
AHRI 920
Water cooled
(dehumidification mode)
Cooling tower condenser water
5.3 ISMRE
AHRI 920
Chilled water
6.6 ISMRE
Air source heat pump
(heating mode)
 
3.3 ISCOP
AHRI 920
Water source heat pump
(dehumidification mode)
Ground source, closed loop
5.2 ISMRE
AHRI 920
Ground-water source
5.8 ISMRE
Water source
4.8 ISMRE
Water source heat pump
(heating mode)
Ground source, closed loop
3.8 ISCOP
AHRI 920
Ground-water source
4.0 ISCOP
Water source
4.8 ISCOP
a
Chapter 6 contains a complete specification of the referenced standards, which include test procedures, including the reference year version of the test procedure.
b
This table is a replica of ASHRAE 90.1 Table 6.8.1-14 Electrically Operated DX-DOAS Units, Single-Package and Remote Condenser, with Energy Recovery—Minimum Efficiency Requirements.
Table C403.3.2(14)
Electrically Water Source Heat Pumps—Minimum Efficiency Requirementsc
Equipment Type
Size Categoryb
Heating Section Type
Subcategory or
Rating Condition
Minimum
Efficiency
Test Procedurea
 
< 17,000 Btu/h
All
86°F entering water
12.2 EER
 
Water to air, water loop (cooling mode)
≥ 17,000 Btu/h and
< 65,000 Btu/h
All
86°F entering water
13.0 EER
ISO 13256-1
 
≥ 65,000 Btu/h and
< 135,000 Btu/h
All
86°F entering water
13.0 EER
 
Water to air, ground water (cooling mode)
< 135,000 Btu/h
All
59°F entering water
18.0 EER
 
Brine to air, ground loop (cooling mode)
< 135,000 Btu/h
All
77°F entering water
14.1 EER
 
Water to water, water loop (cooling mode)
< 135,000 Btu/h
All
86°F entering water
10.6 EER
 
Water to water, ground water (cooling mode)
< 135,000 Btu/h
All
59°F entering water
16.3 EER
ISO 13256-2
Brine to water, ground loop (cooling mode)
< 135,000 Btu/h
All
77°F entering fluid
12.1 EER
 
Water to air, water loop (heating mode)
< 135,000 Btu/h (cooling capacity)
 
68°F entering water
4.3 COPH
 
Water to air, ground water (heating mode)
< 135,000 Btu/h (cooling capacity)
 
50°F entering water
3.7 COPH
ISO 13256-1
Brine to air, ground loop (heating mode)
< 135,000 Btu/h (cooling capacity)
 
32°F entering fluid
3.2 COPH
 
Water to water, water loop (heating mode)
< 135,000 Btu/h (cooling capacity)
 
68°F entering water
3.7 COPH
ISO 13256-1
Water to water, ground water (heating mode)
< 135,000 Btu/h (cooling capacity)
 
50°F entering water
3.1 COPH
ISO 13256-2
Brine to water, ground loop (heating mode)
< 135,000 Btu/h (cooling capacity)
 
32°F entering fluid
2.5 COPH
ISO 13256-2
For SI: 1 British thermal unit per hour = 0.2931 W, °C = [(°F) - 32]/1.8.
a
Chapter 6 contains a complete specification of the referenced standards, which include test procedures, including the reference year version of the test procedure.
b
Single-phase, U.S. air-cooled heat pumps less than 19 kW are regulated as consumer produces by DOE 10 C.F.R. 430. SCOPC, SCOP2C, SCOPH and SCOP2H values for single-phase products are set by the U.S. DOE.
c
This table is a replica of ASHRAE 90.1 Table 6.8.1-15 Electrically Operated Water-Source Heat Pumps—Minimum Efficiency Requirements.
Table C403.3.2(15)
Heat-Pump and Heat Recovery Chiller Packages—Minimum Efficiency Requirementsg,h,i,j,k
For SI: °C = [(°F) - 32]/1.8.
a
Chapter 6 contains a complete specification of the referenced standards, which include test procedures, including the reference year version of the test procedure.
b
Cooling-only rating conditions are standard rating conditions defined in AHRI 550/590, Table 1.
c
Heating full-load rating conditions are at rating conditions defined in AHRI 550/590, Table 1.
d
For water-cooled heat recovery chillers that have capabilities for heat rejection to a heat recovery condenser and a tower condenser, the COPHR applies to operation at full load with 100 percent heat recovery (no tower rejection). Units that only have capabilities for partial heat recovery shall meet the requirements of Table C403.3.2(3).
e
Outdoor air entering dry-bulb (db) temperature and wet-bulb (wb) temperature.
f
Source-water entering and leaving water temperature.
g
This table is a replica of ASHRAE 90.1 Table 6.8.1-16 Heat-Pump and Heat Recovery Chiller Packages—Minimum Efficiency Requirements.
h
AHRI ratings are not required for equipment sizes larger than those covered by the test standard.
i
Air-to-water heat pumps that are configured to operate only in heating and not in cooling only need to comply with the minimum heating efficiencies.
j
Units that are both an air-to-water heat pump and a heat recovery chiller are required to comply with either the applicable air source efficiency requirements or the heat recovery chiller requirements but not both.
k
Heat pumps and heat recovery chillers are only required to comply with one of the four leaving heating water temperature criteria. The leaving heater water temperature criteria that are closest to the design leaving water temperature shall be utilized.
Table C403.3.2(16)
Ceiling-Mounted Computer-Room Air Conditioners—Minimum Efficiency Requirementsb
Equipment Type
Standard Model
Net Sensible Cooling Capacity
Minimum Net Sensible COP
Rating Conditions Return Air (dry-bulb/dew point)
Test Procedurea
Air cooled with free air discharge condenser
Ducted
< 29,000 Btu/h
2.05
75°F/52°F (Class 1)
AHRI 1360
≥ 29,000 Btu/h and < 65,000 Btu/h
2.02
≥ 65,000 Btu/h
1.92
Nonducted
< 29,000 Btu/h
2.08
≥ 29,000 Btu/h and < 65,000 Btu/h
2.05
≥ 65,000 Btu/h
1.94
Air cooled with free air discharge condenser with fluid economizer
Ducted
< 29,000 Btu/h
2.01
75°F/52°F (Class 1)
AHRI 1360
≥ 29,000 Btu/h and < 65,000 Btu/h
1.97
≥ 65,000 Btu/h
1.87
Nonducted
< 29,000 Btu/h
2.04
≥ 29,000 Btu/h and < 65,000 Btu/h
2.00
≥ 65,000 Btu/h
1.89
Air cooled with ducted condenser
Ducted
< 29,000 Btu/h
1.86
75°F/52°F (Class 1)
AHRI 1360
≥ 29,000 Btu/h and < 65,000 Btu/h
1.83
≥ 65,000 Btu/h
1.73
Nonducted
< 29,000 Btu/h
1.89
≥ 29,000 Btu/h and < 65,000 Btu/h
1.86
≥ 65,000 Btu/h
1.75
Air cooled with fluid economizer and ducted condenser
Ducted
< 29,000 Btu/h
1.82
75°F/52°F (Class 1)
AHRI 1360
≥ 29,000 Btu/h and < 65,000 Btu/h
1.78
≥ 65,000 Btu/h
1.68
Nonducted
< 29,000 Btu/h
1.85
≥ 29,000 Btu/h and < 65,000 Btu/h
1.81
≥ 65,000 Btu/h
1.70
Water cooled
Ducted
< 29,000 Btu/h
2.38
75°F/52°F (Class 1)
AHRI 1360
≥ 29,000 Btu/h and < 65,000 Btu/h
2.28
≥ 65,000 Btu/h
2.18
Nonducted
< 29,000 Btu/h
2.41
≥ 29,000 Btu/h and < 65,000 Btu/h
2.31
≥ 65,000 Btu/h
2.20
Water cooled with fluid economizer
Ducted
< 29,000 Btu/h
2.33
75°F/52°F (Class 1)
AHRI 1360
≥ 29,000 Btu/h and < 65,000 Btu/h
2.23
≥ 65,000 Btu/h
2.13
Nonducted
< 29,000 Btu/h
2.36
≥ 29,000 Btu/h and < 65,000 Btu/h
2.26
≥ 65,000 Btu/h
2.16
Glycol cooled
Ducted
< 29,000 Btu/h
1.97
75°F/52°F (Class 1)
AHRI 1360
≥ 29,000 Btu/h and < 65,000 Btu/h
1.93
≥ 65,000 Btu/h
1.78
Nonducted
< 29,000 Btu/h
2.00
≥ 29,000 Btu/h and < 65,000 Btu/h
1.98
≥ 65,000 Btu/h
1.81
Glycol cooled with fluid economizer
Ducted
< 29,000 Btu/h
1.92
75°F/52°F (Class 1)
AHRI 1360
≥ 29,000 Btu/h and < 65,000 Btu/h
1.88
≥ 65,000 Btu/h
1.73
Nonducted
< 29,000 Btu/h
1.95
≥ 29,000 Btu/h and < 65,000 Btu/h
1.93
≥ 65,000 Btu/h
1.76
For SI: 1 British thermal unit per hour = 0.2931 W, °C = [(°F) – 32]/1.8, COP = (Btu/h × hp)(2,550.7).
a
Chapter 6 contains a complete specification of the referenced standards, which include test procedures, including the reference year version of the test procedure.
b
This table is a replica of ASHRAE 90.1 Table 6.8.1-17 Ceiling-Mounted Computer-Room Air Conditioners—Minimum Efficiency Requirements.
[Statutory Authority: RCW 19.27A.020, 19.27A.025, 19.27A.160 and chapters 19.27A and 19.27 RCW. WSR 22-14-091, § 51-11C-403329, filed 7/1/22, effective 7/1/23.]