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Proposal to amend Ontario's energy efficiency regulation

November 25, 2019   (0 Comments)
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The Ontario Ministry of Energy, Northern Development and Mines is proposing to amend Ontario’s Energy and Water Efficiency Regulation (O. Reg. 509/18 under the Electricity Act, 1998) to set or update test methods, scope and/or efficiency requirements for ten products. The proposed amendments, if passed, would:

  • Set test method, scope and/or efficiency requirements for one new product, commercial oil-fired storage water heaters, to harmonize with the United States Department of Energy (DOE) and Natural Resources Canada (NRCan) requirements for this product.
  • Update scope, test method, and/or efficiency requirements for nine existing products to harmonize with NRCan or the Ontario Building Code: commercial gas-fired storage water heaters, residential gas-fired instantaneous water heaters, commercial gas-fired instantaneous water heaters, residential gas-fired furnaces, residential gas-fired boilers, commercial gas-fired boilers, commercial oil-fired boilers, gas fireplaces and residential windows.
  • Make changes to the regulation of a housekeeping nature. These changes could clarify the scope and/or requirements for some products, or update references to include the most relevant or most recent editions of test standards for products with no changes to the existing efficiency requirements.

On November 19, 2019, the proposal to amend O.Reg. 509/18 was posted on the Environmental Registry (ER) for a 59-day public review period (see You are invited to review the proposal and post your comments on the ER no later than January 17, 2020.


To assist in your review, please find attached a draft technical sheet with further details on proposed changes for the ten products that the Ontario Ministry of Energy, Northern Development and Mines is proposing to amend. The proposed changes are highlighted in the document.


Feel free to reach out to the Energy Efficiency Standards team at if you have any questions.


Click here to view the AM25 Technical Sheet.