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Electric water heaters - commercial

Energy Efficiency Regulations

Regulatory definition

Commercial electric water heater, a stationary electric storage tank water heater that is intended for use on a pressurized water system and that has an input rate of greater than 12 kW (40,982 Btu/h) and a Vr of at least 50 L (13.21 US gallons).

Compliance date

Manufactured on or after January 1, 2020

Testing standard

10 C.F.R. Appendix B to Subpart G, Part 431 of Title 10 to the United States Code of Federal Regulations, entitled Uniform Test Method for the Measurement of Standby Loss of Electric Storage Water Heaters and Storage-Type Instantaneous Water Heaters.

Energy efficiency regulations by province

Some provinces also have their own energy efficiency regulations for many of the federally regulated products – find out which ones!

Energy efficiency standard

Energy performance standard for commercial electric water heaters
Equipment category 1Maximum allowable standby loss, in %/hr
All sizes of commercial electric water heaters ≤ 530 L (140 US gallons) ≤ 0.3 + 102.2/Vs

1Maximum allowable standby loss is not required for commercial electric water heaters of volumes more than 530 L (140 US gallons).

Energy efficiency report requirements

  • name of product
  • brand name
  • model number
  • manufacturer
  • the name of the certification body or province whose verification mark will be on the product or its package
  • whether a mathematical model as defined in the Regulations was used to generate any of the information provided below
  • Vr in litres
  • Vs in litres
  • standby loss, in %/hr
  • input rate, in kW

Download the energy efficiency reporting template.

This document does not constitute part of the Energy Efficiency Act (Act) or its associated regulations. This document is an administrative document that is intended to facilitate compliance by the regulated party with the Act and its associated regulations. This document is not intended to provide legal advice regarding the interpretation of the Act or its associated regulations. If a regulated party has questions about their legal obligations or responsibilities under the Act or its associated regulations, they should seek the advice of legal counsel.

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