Proposed Change 1832

1832

Page: Last modified: 2023-10-11

Problem

Effective January 1, 2023, the US Department of Energy (DOE) introduced a series of new energy performance metrics (EER2, SEER2 and HSPF2) in DOE 10 CFR, Part 430-2022, "Energy, Energy Conservation Program for Consumer Products," that is applicable to small single-phase air-cooled air conditioners and air-source heat pumps. These metrics are similar to the previous ones (EER, SEER and HSPF), but use different test conditions that are considered to be more realistic. Larger units and three-phase models are not affected by this amendment.

With the publication of the Regulations Amending the Energy Efficiency Regulations, 2016 (Amendment 17), SOR/2022-265, on December 7, 2022, the Canadian Energy Efficiency Regulations, 2016 (EER), SOR/2016-311, were aligned with DOE 10 CFR, Part 430-2022 by requiring the minimum performance levels to be expressed with the new metrics. As a result, a discrepancy is caused between the NECB and the EER. If manufacturers provided product labels only using the new metrics, the products available on the market could potentially have issues with their conformance to the NECB.

Moreover, it is anticipated that single-phase variable refrigerant flow systems will also be tested to the new test conditions.

This discrepancy will lead to gaps in the Code, and Code users will be unable to evaluate whether HVAC equipment performance complies with the NECB requirements. This, in turn, will lead to difficulties for enforcement officials when determining compliance.

Justification

This proposed change to the NECB updates the reference to the 2022 amendment to DOE 10 CFR, Part 430 and introduces the new energy performance metrics. To facilitate compliance with the NECB, this proposed change maintains the alignment of the NECB with the Energy Efficiency Regulations, 2016 (EER), as amended by SOR/2022-265 (Amendment 17), and ASHRAE 90.1, “Energy Standard for Buildings Except Low-Rise Residential Buildings,” as well as industry practice by US manufacturers.

Amendment 17 generally presents two sets of performance requirements to the EER: the first came into force on January 1, 2023, and the second comes into force on January 1, 2025.

Considering that the NECB 2025 will be published and adopted after January 1, 2025, these requirements, where applicable, should be included in the 2025 edition of the NECB. Amendment 17 also updates the required minimum performance levels for small variable refrigerant flow systems using the same test conditions.

Furthermore, where the NECB has requirements that were and remain more stringent than the EER, the performance levels of the NECB have been retained and converted to the new metrics using the following references:

PROPOSED CHANGE

NECB20 Div.B 5.2.12.1. (first printing)

[5.2.12.1.] 5.2.12.1.Unitary and Packaged HVAC Equipment

[1] 1)Unitary and packaged HVAC equipment and components with the capacities listed in Tables 5.2.12.1.-A to 5.2.12.1.-P shall comply with the performance requirements stated therein. (See Notes A-5.2.12.1.(1)PROPOSED CHANGE A-5.2.12.1.(1) and A-5.2.12.1.(1) and 6.2.2.1.(1)PROPOSED CHANGE A-5.2.12.1.(1) and 6.2.2.1.(1).) (See also Article 6.2.2.4.)

Table [5.2.12.1.-A] 5.2.12.1.-A
Performance Requirements for Air-Cooled Unitary Air Conditioners and Heat Pumps – Electrically Operated^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (1)}
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (2)}
Single-phase air conditioners and heat pumps, single-package, space-constrained	< 19	DOE 10 CFR, Part 430-2022, Subpart B, Appendix M1	See standard	SEER2 = 12.4 / HSPF2 V = 5.4 ^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (3)}^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (4)}
Single-phase air conditioners and heat pumps, single-package, others				SEER2 = 14.3 / HSPF2 V = 6.3 ^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (3)}^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (4)}
Single-phase air conditioners and heat pumps, split-system, others				SEER2 = 12.4 / HSPF2 V = 5.4 ^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (3)}^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (4)}
Single-phase air conditioners and heat pumps, split-system, space-constrained				SEER2 = 14.3 / HSPF2 V = 6.6 ^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (4)}
Single-phase air conditioners and heat pumps, split-system, small-duct and high-velocity				SEER2 = 12.4 / HSPF2 V = 5.0 ^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (3)}^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (4)}
Air conditioners and heat pumps, Ssingle-package, space-constrained	< 19	CSA C656	See standard	SEER = 13 / HSPF V = 6.4^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (4)}
Air conditioners and heat pumps, Ssingle-package, others				SEER = 15 / HSPF V = 7.4^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (4)}
Air conditioners and heat pumps, Ssplit-system, space-constrained				SEER = 13 / HSPF V = 6.4^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (4)}
Air conditioners and heat pumps, Ssplit-system, others				SEER = 15 / HSPF V = ~~7.4~~7.8^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (4)}
Air conditioners and heat pumps, split-system, Ssmall-duct, and high-velocity				SEER = 13 / HSPF V = 5.9^{PROPOSED CHANGE Table 5.2.12.1.A. Footnote (4)}
Large air conditioners and heat pumps, split-system and single-package, all electrical phases, in cooling mode	≥ 19 and < 40	CAN/CSA-C746	Electric resistance heating section or no heating section	EER = 11.2 IEER = 12.9
	≥ 19 and < 40		Other types of heating sections	EER = 11.0 IEER = 12.7
	≥ 40 and < 70		Electric resistance heating section or no heating section	EER = 11.0 IEER = 12.4
	≥ 40 and < 70		Other types of heating sections	EER = 10.8 IEER = 12.2
	≥ 70 and < 223		Electric resistance heating section or no heating section	EER = 10.0 IEER = 11.6
	≥ 70 and < 223		Other types of heating sections	EER = 9.8 IEER = 11.4
	≥ 223	ANSI/AHRI 340/360	Electric resistance heating section or no heating section	EER = 9.7 IEER = 11.2
			Other types of heating sections	EER = 9.5 IEER = 11.0
			Other types of heating sections	EER = 9.5 IEER = 11.0
Large heat pumps, split-system and single-package, all electrical phases, in heating mode	≥ 19 and < 40	CAN/CSA-C746	at 8.3ºC	COP_h = 3.30
	≥ 19 and < 40		at –8.3ºC	COP_h = 2.25
	≥ 40 and < 70		at 8.3ºC	COP_h = 3.20
	≥ 40 and < 70		at –8.3ºC	COP_h = 2.05
	≥ 70 and < 223		at 8.3ºC	COP_h = 3.20
	≥ 70 and < 223		at –8.3ºC	COP_h = 2.05
	≥ 223	ANSI/AHRI 340/360	at 8.3ºC	COP_h = 3.20
	≥ 223	ANSI/AHRI 340/360	at –8.3ºC	COP_h = 2.05

Notes to Table [5.2.12.1.-A] 5.2.12.1.-A:

Footnote 1

Components or equipment regulated in the "Energy Efficiency Regulations" at the time of publication of the Code (see Article 1.1.1.3. of Division A).

PROPOSED CHANGE Table 5.2.12.1.A. Footnote(1) referrer

Footnote 2

~~(4)~~The symbols and abbreviations that appear in this column have the following meanings:

COP_h

= coefficient of performance in heating mode, in W/W

EER

= energy-efficiency ratio, in (Btu/h)/W

HSPF V

= heating seasonal performance factor for region V (see map in CSA C656), in (Btu/h)/W

HSPF2 V

= heating seasonal performance factor 2 for region V (see map in DOE 10 CFR Part 430-2022, Subpart B, Appendix M1), in (Btu/h)/W

IEER

= integrated energy-efficiency ratio, in (Btu/h)/W

SEER

= seasonal energy-efficiency ratio, in (Btu/h)/W

SEER2

= seasonal energy-efficiency ratio 2, in (Btu/h)/W

PROPOSED CHANGE Table 5.2.12.1.A. Footnote(2) referrer

Footnote 3

The SEER2 and HSPF2 V metrics are similar to the SEER and HSPF V metrics, respectively, but use different test conditions, as specified in DOE 10 CFR, Part 430-2022, “Energy, Energy Conservation Program for Consumer Products.” For the purpose of compliance with the Code, either pair of performance metrics may be used.

PROPOSED CHANGE Table 5.2.12.1.A. Footnote(3) referrer

Footnote 4

SEER and SEER2 apply~~ies~~ to air conditioners;~~, and both~~ SEER, SEER2,~~and~~ HSPF V and HSPF2 V apply to heat pumps.

PROPOSED CHANGE Table 5.2.12.1.A. Footnote(4) referrer

Table [5.2.12.1.-B] 5.2.12.1.-B
Performance Requirements for Single-Package Vertical Air Conditioners (SPVAC) and Heat Pumps (SPVHP)^{PROPOSED CHANGE Table 5.2.12.1.B. Footnote (1)}
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.B. Footnote (2)}
SPVAC and SPVHP in cooling mode	< 70	CAN/CSA-C746	< 19 kW	EER = 11
			≥ 19 kW and < 40 kW	EER = 10
			≥ 40 kW and < 70 kW	EER = 10
SPVHP in heating mode			< 19 kW	COP_h = 3.3
			≥ 19 kW and < 40 kW	COP_h = 3.0
			≥ 40 kW and < 70 kW	COP_h = 3.0

Table [5.2.12.1.-C] 5.2.12.1.-C
Performance Requirements for Water-Cooled and Evaporatively Cooled Unitary Air Conditioners – Electrically Operated
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.C. Footnote (1)}
Water-cooled and evaporatively cooled, split-system and single-package	< 19	ANSI/AHRI 210/240	< 19 kW	EER = 12.1 IEER = 12.3
Water-cooled, split-system and single-package^{PROPOSED CHANGE Table 5.2.12.1.C. Footnote (2)}	≥ 19 and < 40	CAN/CSA-C746	Electric resistance heating section or no heating section	EER = 12.1 IEER = 13.9
	≥ 19 and < 40		Other types of heating sections	EER = 11.9 IEER = 13.7
	≥ 40 and < 70		Electric resistance heating section or no heating section	EER = 12.5 IEER = 13.9
	≥ 40 and < 70		Other types of heating sections	EER = 12.3 IEER = 13.7
	≥ 70 and < 223		Electric resistance heating section or no heating section	EER = 12.4 IEER = 13.6
	≥ 70 and < 223		Other types of heating sections	EER = 12.2 IEER = 13.4
Evaporatively cooled, split and single-package^{PROPOSED CHANGE Table 5.2.12.1.C. Footnote (2)}	≥ 19 and < 40	CAN/CSA-C746	Electric resistance heating section or no heating section	EER = 12.1 IEER = 12.3
	≥ 19 and < 40		Other types of heating sections	EER = 11.9 IEER = 12.1
	≥ 40 and < 70		Electric resistance heating section or no heating section	EER = 12.0 IEER = 12.2
	≥ 40 and < 70		Other types of heating sections	EER = 11.8 IEER = 12.0
	≥ 70 and < 223		Electric resistance heating section or no heating section	EER = 11.9 IEER = 12.1
	≥ 70 and < 223		Other types of heating sections	EER = 11.7 IEER = 11.9
Water-cooled, split and single-package	≥ 223	ANSI/AHRI 340/360	Electric resistance heating section or no heating section	EER = 12.2 IEER = 13.5
Water-cooled, split and single-package			Other types of heating sections	EER = 12.0 IEER = 13.3
Evaporatively cooled, split and single-package			Electric resistance heating section or no heating section	EER = 11.7 IEER = 11.9
Evaporatively cooled, split and single-package			Other types of heating sections	EER = 11.5 IEER = 11.7

Table [5.2.12.1.-D] 5.2.12.1.-D
Performance Requirements for Condensing Units
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.D. Footnote (1)}
Air-cooled^{PROPOSED CHANGE Table 5.2.12.1.D. Footnote (2)}	≥ 40 and < 70	CAN/CSA-C746	See standard	EER = 11.2
Water-cooled and evaporatively cooled^{PROPOSED CHANGE Table 5.2.12.1.D. Footnote (2)}	≥ 40 and < 70	CAN/CSA-C746	See standard	EER = 13.1
Air-cooled	≥ 70	ANSI/AHRI 366 (SI)	≥ 70 kW	EER = 10.5 IEER = 11.8
Water-cooled and evaporatively cooled	≥ 70	ANSI/AHRI 366 (SI)	≥ 70 kW	EER = 13.5 IEER = 14.0

Table [5.2.12.1.-E] 5.2.12.1.-E
Performance Requirements for Water-Source Unitary Heat Pumps
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.E. Footnote (1)}
Water-to-air^{PROPOSED CHANGE Table 5.2.12.1.E. Footnote (2)}	< 5	CAN/CSA-C13256-1	Water loop	COP_c = 3.58 COP_h = 4.3
	≥ 5 and < 40		Water loop	COP_c = 3.81 COP_h = 4.3
	< 40		Groundwater	COP_c = 5.28 COP_h = 3.7
	< 40		Ground loop	COP_c = 4.13 COP_h = 3.2
Water-to-water	< 40	CAN/CSA-C13256-2	Water loop	COP_c = 3.11 COP_h = 3.7
			Groundwater	COP_c = 5.60 COP_h = 3.4
			Ground loop	COP_c = 4.21 COP_h = 2.8

Table [5.2.12.1.-F] 5.2.12.1.-F
Performance Requirements for Direct-Expansion Ground-Source Heat Pumps – Electrically Operated
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.F. Footnote (1)}
Direct-expansion ground-source heat pumps	≤ 21	CSA C748	See standard	COP_c = 3.81 COP_h = 3.1
Direct-expansion ground-source heat pumps	> 21	CSA C748	See standard	No requirements

Table [5.2.12.1.-G] 5.2.12.1.-G
Performance Requirements for Packaged Terminal Air Conditioners (PTAC) and Heat Pumps (PTHP), and Room Air Conditioners and Heat Pumps^{PROPOSED CHANGE Table 5.2.12.1.G. Footnote (1)}
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.G. Footnote (2)}
PTAC and PTHP in cooling mode, standard and non-standard sizes	< 2.1	AHRI 310/380/CSA C744	See standard	EER = 11.9
	≥ 2.1 and < 4.4			EER = 14.1 – (1.0435 × Cap_kW)
	≥ 4.4			EER = 9.5
PTHP in heating mode, standard and non-standard sizes	< 2.1			COP_h = 3.3
	≥ 2.1 and < 4.4			COP_h = 3.67 – (0.1739 × Cap_kW)
	≥ 4.4			COP_h = 2.9
Louvered, without reverse cycle	< 5.9	CSA C368.1	See standard	CEER = 10.7
Louvered, without reverse cycle	≥ 5.9 and ≤ 10.6			CEER = 9.0
Louvered, with reverse cycle	< 5.9			CEER = 9.8
Louvered, with reverse cycle	≥ 5.9 and ≤ 10.6			CEER = 9.3
Non-louvered, without reverse cycle	< 4.1			CEER = 9.6
Non-louvered, without reverse cycle	≥ 4.1 and ≤ 10.6			CEER = 9.4
Non-louvered, with reverse cycle	< 4.1			CEER = 9.3
Non-louvered, with reverse cycle	≥ 4.1 and ≤ 10.6			CEER = 8.7
Room air conditioners, casement only	All capacities			CEER = 9.5
Room air conditioners, casement slider	All capacities			CEER = 10.4

Table [5.2.12.1.-H] 5.2.12.1.-H
Performance Requirements for Computer Room Air Conditioners
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.H. Footnote (1)}
Air-cooled, floor-mounted, with or without fluid economizer	< 23	AHRI 1361 (SI)	Downflow or upflow, ducted	SCOP = 2.67
	≥ 23 and < 86			SCOP = 2.55
	≥ 86			SCOP = 2.33
	< 23		Upflow, non-ducted	SCOP = 2.09
	< 23		Horizontal	SCOP = 2.65
	≥ 23 and < 70		Upflow, non-ducted	SCOP = 1.99
	≥ 23 and < 70		Horizontal	SCOP = 2.55
	≥ 70		Upflow, non-ducted	SCOP = 1.81
	≥ 70		Horizontal	SCOP = 2.47
Water-cooled, floor-mounted, with or without fluid economizer	< 23		Downflow or upflow, ducted	SCOP = 2.74
	≥ 23 and < 86			SCOP = 2.65
	≥ 86			SCOP = 2.61
	< 23		Upflow, non-ducted	SCOP = 2.44
	< 23		Horizontal	SCOP = 2.71
	≥ 23 and < 70		Upflow, non-ducted	SCOP = 2.34
	≥ 23 and < 70		Horizontal	SCOP = 2.60
	≥ 70		Upflow, non-ducted	SCOP = 2.24
	≥ 70		Horizontal	SCOP = 2.54
Glycol-cooled, floor-mounted, with or without fluid economizer	< 23		Downflow or upflow, ducted	SCOP = 2.48
	≥ 23 and < 86			SCOP = 2.16
	≥ 86			SCOP = 2.12
	< 23		Upflow, non-ducted	SCOP = 2.34
	< 23		Horizontal	SCOP = 2.44
	≥ 23 and < 70		Upflow, non-ducted	SCOP = 1.99
	≥ 23 and < 70		Horizontal	SCOP = 2.10
	≥ 70		Upflow, non-ducted	SCOP = 1.94
	≥ 70		Horizontal	SCOP = 2.10
Air-cooled, ceiling-mounted, free air discharge condenser, with or without fluid economizer	< 8.5		Ducted	SCOP = 2.01
	< 8.5		Non-ducted	SCOP = 2.04
	≥ 8.5 and < 19		Ducted	SCOP = 1.97
	≥ 8.5 and < 19		Non-ducted	SCOP = 2.00
	≥ 19		Ducted	SCOP = 1.87
	≥ 19		Non-ducted	SCOP = 1.89
Air-cooled, ceiling-mounted, ducted condenser, with or without fluid economizer	< 8.5		Ducted	SCOP = 1.82
	< 8.5		Non-ducted	SCOP = 1.68
	≥ 8.5 and < 19		Ducted	SCOP = 1.78
	≥ 8.5 and < 19		Non-ducted	SCOP = 1.81
	≥ 19		Ducted	SCOP = 1.68
	≥ 19		Non-ducted	SCOP = 1.70
Water-cooled, ceiling-mounted, with or without fluid economizer	< 8.5		Ducted	SCOP = 2.33
	< 8.5		Non-ducted	SCOP = 2.36
	≥ 8.5 and < 19		Ducted	SCOP = 2.23
	≥ 8.5 and < 19		Non-ducted	SCOP = 2.26
	≥ 19		Ducted	SCOP = 2.13
	≥ 19		Non-ducted	SCOP = 2.16
Glycol-cooled, ceiling-mounted, with or without fluid economizer	< 8.5		Ducted	SCOP = 1.92
	< 8.5		Non-ducted	SCOP = 1.95
	≥ 8.5 and < 19		Ducted	SCOP = 1.88
	≥ 8.5 and < 19		Non-ducted	SCOP = 1.93
	≥ 19		Ducted	SCOP = 1.73
	≥ 19		Non-ducted	SCOP = 1.76

Table [5.2.12.1.-I] 5.2.12.1.-I
Performance Requirements for Variable Refrigerant Flow Systems
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.I. Footnote (1)}
Single-phase air-cooled air conditioners and heat pumps, with or without heat recovery^{PROPOSED CHANGE Table 5.2.12.1.I. Footnote (2)}	< 19	DOE 10 CFR, Part 430-2022, Subpart B, Appendix M1	See standard	SEER2 = 14.3 / HSPF2 V = 6.6 ^{PROPOSED CHANGE Table 5.2.12.1.I. Footnote (3)}^{PROPOSED CHANGE Table 5.2.12.1.I. Footnote (4)}
Air-cooled air conditioners and heat pumps, with or without heat recovery^{PROPOSED CHANGE Table 5.2.12.1.I. Footnote (2)}	< 19	CSA C656	See standard	SEER = 15 / HSPF V = 7.8^{PROPOSED CHANGE Table 5.2.12.1.I. Footnote (3)}
Air-cooled air conditioners	≥ 19 and < 40	AHRI 1230	See standard	EER = 11.2 IEER = 15.5
	≥ 40 and < 70			EER = 11.0 IEER = 14.9
	≥ 70			EER = 10.0 IEER = 13.9
Air-source heat pumps, with or without heat recovery	≥ 19 and < 40			EER = 10.8 IEER = 14.4 COP_h = 3.30 evaluated at 8.3ºC db / 6.1ºC wb COP_h = 2.25 evaluated at –8.3ºC db / –9.4ºC wb
	≥ 40 and < 70			EER = 10.4 IEER = 13.7 COP_h = 3.20 evaluated at 8.3ºC db / 6.1ºC wb COP_h = 2.05 evaluated at –8.3ºC db / –9.4ºC wb
	≥ 70			EER = 9.3 IEER = 12.5 COP_h = 3.20 evaluated at 8.3ºC db / 6.1ºC wb COP_h = 2.05 evaluated at –8.3ºC db / –9.4ºC wb
Water-source heat pumps, with or without heat recovery	< 40			EER = 11.8 IEER = 15.8 COP_h = 4.3
Water-source heat pumps, with or without heat recovery	≥ 40			EER = 9.8 IEER = 12.0 COP_h = 4.0
Groundwater source heat pumps, with or without heat recovery	< 40			EER = 16.2 COP_h = 3.6
	≥ 40			EER = 13.8 COP_h = 3.3
Ground-source heat pumps, with or without heat recovery	< 40			EER = 13.2 COP_h = 3.1
Ground-source heat pumps, with or without heat recovery	≥ 40			EER = 10.8 COP_h = 2.8

Notes to Table [5.2.12.1.-I] 5.2.12.1.-I:

Footnote 1

The symbols and abbreviations that appear in this column have the following meanings:

COP_h

= coefficient of performance in heating mode, in W/W

= dry-bulb outdoor air temperature

EER

= energy-efficiency ratio, in (Btu/h)/W

HSPF V

= heating seasonal performance factor for region V (see map in CSA C656), in (Btu/h)/W

HSPF2 V

= heating seasonal performance factor 2 for region V (see map in DOE 10 CFR Part 430-2022, Subpart B, Appendix M1), in (Btu/h)/W

IEER

= integrated energy-efficiency ratio, in (Btu/h)/W

SEER

= seasonal energy-efficiency ratio, in (Btu/h)/W

SEER2

= seasonal energy-efficiency ratio 2, in (Btu/h)/W

= wet-bulb outdoor air temperature

PROPOSED CHANGE Table 5.2.12.1.I. Footnote(1) referrer

Footnote 2

Components or equipment regulated in "Energy Efficiency Regulations" at the time of publication of the Code (see Article 1.1.1.3. of Division A).

PROPOSED CHANGE Table 5.2.12.1.I. Footnote(2) referrer

Footnote 3

SEER applies to air conditioners, and both SEER and HSPF V apply to heat pumps.

PROPOSED CHANGE Table 5.2.12.1.I. Footnote(3) referrer

Footnote 4

The SEER2 and HSPF2 V metrics are similar to the SEER, EER and HSPF V metrics, respectively, but use different test conditions, as specified in DOE 10 CFR, Part 430-2022, “Energy, Energy Conservation Program for Consumer Products.” For the purpose of compliance with the Code, either group of performance metrics may be used.

PROPOSED CHANGE Table 5.2.12.1.I. Footnote(4) referrer

Table [5.2.12.1.-J] 5.2.12.1.-J
Performance Requirements for Direct-Expansion Dedicated Outdoor Air Systems
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.J. Footnote (1)}
Air-cooled	All capacities	ANSI/AHRI 921 (SI)	See standard	ISMRE = 1.8
Air-source heat pumps			See standard	ISMRE = 1.8 ISCOP = 1.2
Water-cooled			Cooling tower / condenser water	ISMRE = 2.2
Water-cooled			Chilled water	ISMRE = 2.7
Water-source heat pumps			Water source	ISMRE = 1.8 ISCOP = 3.5
			Groundwater source	ISMRE = 2.3 ISCOP = 3.2
			Ground-source, closed loop	ISMRE = 2.2 ISCOP = 2.0
Air-cooled, with energy recovery			See standard	ISMRE = 2.4
Air-cooled, with energy recovery			See standard	ISMRE = 2.4
Air-source heat pumps, with energy recovery			See standard	ISMRE = 2.4 ISCOP = 3.3
Air-source heat pumps, with energy recovery			See standard	ISMRE = 2.4 ISCOP = 3.3
Water-cooled, with energy recovery			Cooling tower / condenser water	ISMRE = 2.4
Water-cooled, with energy recovery			Chilled water	ISMRE = 3.0
Water-source heat pumps, with energy recovery			Water source	ISMRE = 2.2 ISCOP = 4.8
			Groundwater source	ISMRE = 2.6 ISCOP = 4.0
			Ground-source, closed loop	ISMRE = 2.4 ISCOP = 3.8

Table [5.2.12.1.-K] 5.2.12.1.-K
Performance Requirements for Packaged Water Chillers^{PROPOSED CHANGE Table 5.2.12.1.K. Footnote (1)}
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.K. Footnote (2)}
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Path A^{PROPOSED CHANGE Table 5.2.12.1.K. Footnote (3)}	Path B^{PROPOSED CHANGE Table 5.2.12.1.K. Footnote (3)}
Air-cooled, with or without remote condensers, all types of compressors	< 528	CAN/CSA-C743	See standard	COP_c = 2.985 IPLV = 4.048	COP_c = 2.866 IPLV = 4.669
	< 528			COP_c = 2.985 IPLV = 4.048	COP_c = 2.866 IPLV = 4.669
	≥ 528			COP_c = 2.985 IPLV = 4.137	COP_c = 2.866 IPLV = 4.758
Water-cooled, rotary screw, scroll, or reciprocating compressor	< 264			COP_c = 4.694 IPLV = 5.867	COP_c = 4.513 IPLV = 7.041
	≥ 264 and < 528			COP_c = 4.889 IPLV = 6.286	COP_c = 4.694 IPLV = 7.184
	≥ 528 and < 1 055			COP_c = 5.334 IPLV = 6.519	COP_c = 5.177 IPLV = 8.001
	≥ 1 055 and < 2 110			COP_c = 5.771 IPLV = 6.770	COP_c = 5.633 IPLV = 8.586
	≥ 2 110			COP_c = 6.286 IPLV = 7.041	COP_c = 6.018 IPLV = 9.264
Water-cooled, centrifugal compressor	< 528			COP_c = 5.771 IPLV = 6.401	COP_c = 5.065 IPLV = 8.001
	≥ 528 and < 1 055			COP_c = 5.771 IPLV = 6.401	COP_c = 5.544 IPLV = 8.801
	≥ 1 055 and < 1 407			COP_c = 6.286 IPLV = 6.770	COP_c = 5.917 IPLV = 9.027
	≥ 1 407			COP_c = 6.286 IPLV = 7.041	COP_c = 6.018 IPLV = 9.264
Single-effect absorption, air-cooled	All capacities			COP_c = 0.600
Single-effect absorption, water-cooled				COP_c = 0.700
Double-effect absorption, indirect fire				COP_c = 1.000 IPLV = 1.050
Double-effect absorption, direct fire				COP_c = 1.000 IPLV = 1.000

Notes to Table [5.2.12.1.-K] 5.2.12.1.-K:

Footnote 1

Components or equipment regulated in the "Energy Efficiency Regulations" at the time of publication of the Code (see Article 1.1.1.3. of Division A).

PROPOSED CHANGE Table 5.2.12.1.K. Footnote(1) referrer

Footnote 2

The symbols and abbreviations that appear in this column have the following meanings:

COP_c

= coefficient of performance in cooling mode, in W/W

IPLV

= integrated part-load value (no units)

PROPOSED CHANGE Table 5.2.12.1.K. Footnote(2) referrer

Footnote 3

Chillers are permitted to comply with either Path A or Path B of CAN/CSA-C743. Path A is generally better suited to full-load applications (i.e., where chillers operate a significant amount of the time at full load), while Path B is generally better suited to part-load applications.

PROPOSED CHANGE Table 5.2.12.1.K. Footnote(3) referrer

Table [5.2.12.1.-L] 5.2.12.1.-L
Performance Requirements for Heat Pumps and Heat Recovery Chiller Packages
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.L. Footnote (1)}
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Path A^{PROPOSED CHANGE Table 5.2.12.1.L. Footnote (2)}	Path B^{PROPOSED CHANGE Table 5.2.12.1.L. Footnote (2)}
Air-source heat pumps, in cooling mode	< 528	ANSI/AHRI 551/591 (SI)	See standard	COP_c = 2.836 IPLV = 3.846	COP_c = 2.723 IPLV = 4.436
Air-source heat pumps, in cooling mode	≥ 528			COP_c = 2.836 IPLV = 3.930	COP_c = 2.723 IPLV = 4.520
Water-source heat pumps and heat recovery chillers, rotary screw, scroll, or reciprocating compressor, in cooling mode	< 264			COP_c = 4.659 IPLV = 5.574	COP_c = 4.287 IPLV = 6.689
	≥ 264 and < 528			COP_c = 4.645 IPLV = 5.972	COP_c = 4.459 IPLV = 6.825
	≥ 528 and < 1 055			COP_c = 5.067 IPLV = 6.193	COP_c = 4.918 IPLV = 7.601
	≥ 1 055 and < 2 110			COP_c = 5.482 IPLV = 6.432	COP_c = 5.351 IPLV = 8.157
	≥ 2 110			COP_c = 5.072 IPLV = 6.689	COP_c = 5.717 IPLV = 8.801
Water-source heat pumps and heat recovery chillers, centrifugal compressor, in cooling mode	< 264			COP_c = 5.482 IPLV = 6.081	COP_c = 4.812 IPLV = 7.601
	≥ 264 and < 528			COP_c = 5.482 IPLV = 6.081	COP_c = 5.267 IPLV = 6.361
	≥ 528 and < 1 055			COP_c = 5.972 IPLV = 6.432	COP_c = 5.621 IPLV = 8.567
	≥ 1 055			COP_c = 5.972 IPLV = 6.689	COP_c = 5.717 IPLV = 8.801

Table [5.2.12.1.-M] 5.2.12.1.-M
Performance Requirements for Heat Pumps and Heat-Recovery Chiller Packages Based on Leaving Water Temperature
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions^{PROPOSED CHANGE Table 5.2.12.1.M. Footnote (1)}	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.M. Footnote (2)}
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard		If LWT = 40ºC	If LWT = 50ºC	If LWT = 60ºC
Air-source heat pumps, in heating mode	All capacities	ANSI/AHRI 551/591 (SI)	EAT = 8ºC db / 6ºC wb	COP_h = 3.350	COP_h = 2.720	COP_h = 2.330
Air-source heat pumps, in heating mode	All capacities		EAT = –8ºC db / –9ºC wb	COP_h = 2.250	COP_h = 1.920	COP_h = 1.640
Water-source heat pumps, rotary screw, scroll, reciprocating or centrifugal compressor, in heating mode	< 1 055		EST / LST = 12ºC / 7ºC	COP_h = 4.760	COP_h = 3.610	COP_h = 2.660
	< 1 055		EST / LST = 24ºC / 19ºC	—	—	COP_h = 3.530
	≥ 1 055		EST / LST = 12ºC / 7ºC	COP_h = 5.060	COP_h = 3.880	COP_h = 2.950
	≥ 1 055		EST / LST = 24ºC / 19ºC	—	—	COP_h = 3.870
Heat-recovery chillers, rotary screw, scroll, reciprocating or centrifugal compressor, simultaneous heating and cooling modes	< 1 055		EST / LST = 12ºC / 7ºC	COP_hr = 8.550	COP_hr = 6.290	COP_hr = 4.390
	< 1 055		EST / LST = 24ºC / 19ºC	—	—	COP_hr = 6.100
	≥ 1 055		EST / LST = 12ºC / 7ºC	COP_hr = 9.140	COP_hr = 6.850	COP_hr = 4.960
	≥ 1 055		EST / LST = 24ºC / 19ºC	—	—	COP_hr = 6.800

Table [5.2.12.1.-N] 5.2.12.1.-N
Performance Requirements for Boilers
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.N. Footnote (1)}
Electric	< 88	^{PROPOSED CHANGE Table 5.2.12.1.N. Footnote (2)}	—	Must be equipped with automatic water temperature control^{PROPOSED CHANGE Table 5.2.12.1.N. Footnote (3)}
Electric	≥ 88	^{PROPOSED CHANGE Table 5.2.12.1.N. Footnote (2)}	—	—
Gas-fired^{PROPOSED CHANGE Table 5.2.12.1.N. Footnote (4)}	< 88	CAN/CSA-P.2	See standard	AFUE = 90% (water)^{PROPOSED CHANGE Table 5.2.12.1.N. Footnote (3)} AFUE = 82% (steam)^{PROPOSED CHANGE Table 5.2.12.1.N. Footnote (3)}
	≥ 88 and < 733	DOE 10 CFR, Part 431, Subpart E, Appendix A	See standard	E_t ≥ 90% (water) E_t ≥ 81% (steam)
	≥ 733 and < 2 930	DOE 10 CFR, Part 431, Subpart E, Appendix A	See standard	E_c ≥ 90% (water) E_t ≥ 82% (steam)
Oil-fired	< 88	CAN/CSA-P.2	See standard	AFUE = 86% (water) AFUE = 85% (steam)
	≥ 88 and < 733	DOE 10 CFR, Part 431, Subpart E, Appendix A	See standard	E_t = 87% (water) E_t = 84% (steam)
	≥ 733 and < 2 930	DOE 10 CFR, Part 431, Subpart E, Appendix A	See standard	E_c = 88% (water) E_t = 85% (steam)

Notes to Table [5.2.12.1.-N] 5.2.12.1.-N:

Footnote 1

The symbols and abbreviations that appear in this column have the following meanings:

AFUE

= annual fuel utilization efficiency

E_c

= combustion efficiency

E_t

= thermal efficiency

PROPOSED CHANGE Table 5.2.12.1.N. Footnote(1) referrer

Footnote 2

No standards address the heating performance efficiency of electric boilers; however, their thermal efficiency is typically normalized at 97% in the testing standards.

PROPOSED CHANGE Table 5.2.12.1.N. Footnote(2) referrer

Footnote 3

Components or equipment regulated in the "Energy Efficiency Regulations" at the time of publication of the Code (see Article 1.1.1.3. of Division A).

PROPOSED CHANGE Table 5.2.12.1.N. Footnote(3) referrer

Footnote 4

Includes propane.

PROPOSED CHANGE Table 5.2.12.1.N. Footnote(4) referrer

Table [5.2.12.1.-O] 5.2.12.1.-O
Performance Requirements for Warm-Air Furnaces, Combination Warm-Air Furnace/Air-conditioning Units,
Duct Furnaces and Unit Heaters
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (1)}
Electric furnaces	< 66	DOE 10 CFR, Part 430, Subpart B, Appendix Aa^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (2)}	—	FER = 0.044 × Q_max + 165^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (3)}^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (4)}
Electric furnaces	≥ 66	^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (2)}	—	—
Gas-fired warm-air furnaces^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (5)}^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (6)}	≤ 66	CAN/CSA-P.2 and DOE 10 CFR, Part 430, Subpart B, Appendix Aa	Without integrated cooling	AFUE = 95%^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (3)} FER = 0.044 × Q_max + 195
			Outdoor furnaces with integrated cooling	AFUE = 78%^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (3)} FER = 0.044 × Q_max + 199
			Through-the-wall, with integrated cooling	AFUE = 90%^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (3)} FER = 0.044 × Q_max + 195
		ANSI Z21.47/CSA 2.3	Three-phase electric supply	AFUE = 78% or E_t = 80%
	> 66 and ≤ 117	ANSI Z21.47/CSA 2.3	See standard	E_t = 81%
Gas-fired packaged furnaces^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (5)}	≤ 2 931	CAN/CSA-P.8, Annex C	See standard	E_t = 80%
Gas-fired duct furnaces^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (5)}^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (6)}	≤ 2 931	ANSI Z83.8/CSA 2.6	See standard	E_t = 81%
Gas-fired unit heaters^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (3)}^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (5)}	≤ 2 931	CAN/CSA-P.11	See standard	E_t = 82%
Oil-fired warm-air furnaces	≤ 66	CAN/CSA-P.2	See standard	E_t = 84.5% AFUE = 85%^{PROPOSED CHANGE Table 5.2.12.1.O. Footnote (3)}
Oil-fired warm-air furnaces	> 66	CSA B140.4	See standard	E_t = 82%
Oil-fired duct furnaces and unit heaters	All capacities	CSA B140.4	See standard	E_t = 81%

Notes to Table [5.2.12.1.-O] 5.2.12.1.-O:

Footnote 1

The symbols and abbreviations that appear in this column have the following meanings:

AFUE

= annual fuel utilization efficiency

E_t

= thermal efficiency

FER

= fan energy rating, in W per 472 L/s

Q_max

= maximum airflow provided by the furnace at test conditions, in cfm

PROPOSED CHANGE Table 5.2.12.1.O. Footnote(1) referrer

Footnote 2

No standards address the heating performance efficiency of electric furnaces; however, their thermal efficiency is typically normalized at 97% in the testing standard, which addresses fan efficiency rating only.

PROPOSED CHANGE Table 5.2.12.1.O. Footnote(2) referrer

Footnote 3

Components or equipment regulated in the "Energy Efficiency Regulations" at the time of publication of the Code (see Article 1.1.1.3. of Division A ).

PROPOSED CHANGE Table 5.2.12.1.O. Footnote(3) referrer

Footnote 4

Must be equipped with a high-efficiency constant torque or constant airflow fan motor.

PROPOSED CHANGE Table 5.2.12.1.O. Footnote(4) referrer

Footnote 5

Includes propane.

PROPOSED CHANGE Table 5.2.12.1.O. Footnote(5) referrer

Footnote 6

Excludes gas-fired outdoor packaged units.

PROPOSED CHANGE Table 5.2.12.1.O. Footnote(6) referrer

Table [5.2.12.1.-P] 5.2.12.1.-P
Performance Requirements for Other Fuel-Burning Equipment and Appliances
Forming Part of Sentences [5.2.12.1.] 5.2.12.1.([1] 1), 6.2.2.4.(2), 6.2.2.5.(1) and 8.4.4.18.(6)
Type of Equipment	Cooling or Heating Capacity, kW	Performance Testing Standard	Rating Conditions	Minimum Performance^{PROPOSED CHANGE Table 5.2.12.1.P. Footnote (1)}
Gas-fired fireplaces and stoves, non-decorative	All capacities	CAN/CSA-P.4.1	See standard	FE = 50%, with direct vent and without standing pilot light
Solid-fuel-burning stoves	All capacities	EPA 40 CFR, Part 60, Subpart AAA and Subpart QQQQ, and CSA B415.1	See standard	—
Solid-fuel-burning boilers	< 2 000	DIN EN 303-5	See standard	—
Gas-fired infrared heaters, high-intensity^{PROPOSED CHANGE Table 5.2.12.1.P. Footnote (2)}^{PROPOSED CHANGE Table 5.2.12.1.P. Footnote (3)}	≤ 117 per burner	DIN EN 419	See standard	NRE ≥ 55%
Gas-fired infrared heaters, tubular and low-intensity^{PROPOSED CHANGE Table 5.2.12.1.P. Footnote (2)}^{PROPOSED CHANGE Table 5.2.12.1.P. Footnote (3)}	≤ 117 per burner	DIN EN 416	See standard	NRE ≥ 45%

Notes to Table [5.2.12.1.-P] 5.2.12.1.-P:

Footnote 1

The symbols and abbreviations that appear in this column have the following meanings:

E_o

= overall efficiency

= fireplace efficiency

NRE

= net radiant efficiency. NRE corresponds to the ratio of useful (dry) radiant output to the heat input. CAN/ANSI/AHRI 1330, "Performance Rating for Radiant Output of Gas Fired Infrared Heaters", uses the same test methods as DIN EN 416 and DIN EN 419. However, CAN/ANSI/AHRI 1330 reports test results as gross radiant efficiency (GRE), which is the ratio between the corrected radiant output to the heat input and is about 6%–9% lower than NRE, or as infrared factor (IF), which relates to GRE.

PROPOSED CHANGE Table 5.2.12.1.P. Footnote(1) referrer

Footnote 2

Excludes gas-fired outdoor packaged units.

PROPOSED CHANGE Table 5.2.12.1.P. Footnote(2) referrer

Footnote 3

Includes gas-fired patio heaters, high- or low-intensity, as applicable.

PROPOSED CHANGE Table 5.2.12.1.P. Footnote(3) referrer

Impact analysis

This proposed change would help Code users and authorities having jurisdiction to assess whether equipment conforms to the Code.

This proposed change is expected to be cost neutral because it simply aligns the NECB requirements with the Canadian Energy Efficiency Regulations, 2016.

Enforcement implications

This proposed change would facilitate enforcement since the metrics used in the NECB would align with those of the Canadian Energy Efficiency Regulations, 2016 and the US Department of Energy, Energy Conservation Program for Consumer Products.

Who is affected

Designers, engineers, architects, manufacturers, builders, specification writers and building officials.

OBJECTIVE-BASED ANALYSIS OF NEW OR CHANGED PROVISIONS

NECB20 Div.B 5.2.12.1. (first printing)

[5.2.12.1.] 5.2.12.1. ([1] 1) [F95,F98,F99-OE1.1]

Date modified:: 2023-10-11