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On January 24th, Natural Resources Canada (NRCan) issued a clarification concerning the requirements for make-up air large air conditioners and direct expansion outdoor dedicated air systems under Canada’s Energy Efficiency Regulations.

According to the definition, “large air conditioners means a commercial or industrial unitary air conditioner with a cooling capacity of at least 19 kW but less than 223 kW”, and does not include a single package vertical air conditioners. For direct expansion outdoor air systems that are designed to provide only 100 percent outdoor air to the conditioned space, NRCan representatives have noted that these units cannot be tested using the current standards.  Accordingly, they will not be taking enforcement action pertaining to the minimum and testing at these requirements, but will instead require that an energy efficiency report be submitted to NRCan by the manufacturer, dealer or certification agency.

For a copy of the Clarification Letter, click here.

 For more information contact Caroline Czajko at HRAI, e-mail: cczajko@hrai.ca