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Energy Efficiency Regulations, 2016

Version of section 376 from 2023-06-21 to 2024-02-06:


Marginal note:Energy-efficiency standards — household

  •  (1) The energy efficiency standards set out in column 3 of Table 1 to this section apply to household gas-fired storage water heaters described in column 1 that are manufactured during the periods set out in column 4.

  • Marginal note:Testing standard — household

    (2) A household gas-fired storage water heater complies with the energy efficiency standard if it meets that standard when tested in accordance with testing procedures established by the standard set out in column 2 of Table 1 that are applicable to a gas-fired storage water heater as defined in section 374.

  • Marginal note:Energy efficiency standards — commercial

    (3) The energy efficiency standards set out in column 3 of Table 2 to this section apply to commercial gas-fired storage water heaters described in column 1 that are manufactured on or after July 1, 2023.

  • Marginal note:Testing standard — commercial

    (4) A commercial gas-fired storage water heater complies with the energy efficiency standard if it meets that standard when tested in accordance with testing procedures established by the standard set out in column 2 of Table 2 that are applicable to a gas-fired storage water heater as defined in section 374.

    TABLE 1

    Column 1Column 2Column 3Column 4
    ItemEnergy-using ProductTesting StandardEnergy Efficiency StandardPeriod of Manufacture
    1Household gas-fired storage water heatersCSA P.3-04Energy factor of ≥ 0.67 – 0.0005 VrOn or after February 3, 1995 and before December 31, 2016
    2Household gas-fired storage water heatersCSA P.3-04Energy factor of ≥ 0.675 – 0.00039 VrOn or after December 31, 2016 and before January 1, 2018
    3Household gas-fired storage water heaters that have a first-hour rating of < 68 L (18 US gallons)

    CSA P.3-04 for energy factor

    CSA P.3-15 for uniform energy factor

    Must have at least one of the following:

    • (a) energy factor of ≥ 0.675 – 0.00039 Vr; or

    • (b) uniform energy factor of ≥ 0.3456 –0.00053 Vs

    On or after January 1, 2018
    4Household gas-fired storage water heaters that have a first-hour rating of ≥ 68 L (18 US gallons) but < 193 L (51 US gallons)

    CSA P.3-04 for energy factor

    CSA P.3-15 for uniform energy factor

    Must have at least one of the following:

    • (a) energy factor of ≥ 0.675 – 0.00039 Vr; or

    • (b) uniform energy factor of ≥ 0.5982 – 0.00050 Vs.

    On or after January 1, 2018
    5Household gas-fired storage water heaters that have a first-hour rating of ≥ 193 L (51 US gallons) but < 284 L (75 US gallons)

    CSA P.3-04 for energy factor

    CSA P.3-15 for uniform energy factor

    Must have at least one of the following:

    • (a) energy factor of ≥ 0.675 – 0.00039 Vr; or

    • (b) uniform energy factor of ≥ 0.6483 – 0.00045 Vs.

    On or after January 1, 2018
    6Household gas-fired storage water heaters that have a first-hour rating of ≥ 284 L (75 US gallons)

    CSA P.3-04 for energy factor

    CSA P.3-15 for uniform energy factor

    Must have at least one of the following:

    • (a) energy factor of ≥ 0.675 – 0.00039 Vr; or

    • (b) uniform energy factor of ≥ 0.692 – 0.00034 Vs.

    On or after January 1, 2018

    TABLE 2

    Column 1Column 2Column 3
    ItemEnergy-using ProductTesting StandardEnergy Efficiency Standard
    1Commercial gas-fired storage water heaters, other than replacement units, that have an input rate of > 21.97 kW (75,000 Btu/h) but ≤ 30.5 kW (105,000 Btu/h), have a Vr of ≤ 454 L (120 US gallons), use single-phase power and limit water temperatures to < 82°C (180°F)CSA P.3-15Uniform energy factor ≥ 0.8107-0.00021 Vs
    2Commercial gas-fired storage water heaters that are replacement units, have an input rate of > 21.97 kW (75,000 Btu/h) but ≤ 30.5 kW (105,000 Btu/h), have a Vr of ≤ 454 L (120 US gallons), use single-phase power and limit water temperatures to < 82°C (180°F)CSA P.3-15Uniform energy factor ≥ 0.6597-0.00024 Vs
    3Commercial gas-fired storage water heaters, other than replacement units, that have a Vr of > 530 L (140 US gallons)10 C.F.R. Appendix AThermal efficiency ≥ 90%
    4Commercial gas-fired storage water heaters that are replacement units and that have a Vr of > 530 L (140 US gallons)10 C.F.R. Appendix AThermal efficiency ≥ 80%
    5Commercial gas-fired storage water heaters, other than those described in items 1 and 3, that are not replacement units10 C.F.R. Appendix A

    Thermal efficiency ≥ 90%

    Standby loss ≤ 0.84 (1.25 Q + 16.57√Vs)

    6Commercial gas-fired storage water heaters, other than those described in items 2 and 4, that are replacement units10 C.F.R. Appendix A

    Thermal efficiency ≥ 80%

    Standby loss ≤ 1.25 Q + 16.57√Vs

  • SOR/2018-201, s. 40
  • SOR/2019-164, s. 33
  • SOR/2022-265, s. 25
  • SOR/2022-265, s. 47

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