Duct heater required with an HRV in a cold climate??
I’m in the beginning stages of building a super-insulated house near Ottawa, Canada. The foundation is completed and we’re about to start framing. One of the last details / sub-contractsI need to tie up is the HRV system. One of the firms providing a quote insists a 1500-2000w duct heater is required.
I recognize that the fresh air is likely to be somewhat cooler than the temperature of the house. However, this suggestions a little over-the-top given that the house will have R50 walls, R80 attic, tripled-glazed fibreglass windows and will be tight at less than 1.0 ACH50.
I’d appreciate suggestions.
Lanark County, Ontario
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