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1. roter+(OP)[view] [source] 2022-10-07 12:55:29
Shouldn't be if your building was designed properly, with a proper Heat Recovery Ventilator (HRV) e.g. [0]. The long and short of it, fresh air is slightly heated by stale outgoing moist air.

[0] https://www.nrcan.gc.ca/energy-efficiency/products/product-i...

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