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But any modern house is too airtight and essentially requires ERV.

Which brings us to next interesting problem - you would think that ERV should be built-in into modern cooling/heating systems, but it’s no the case.



Yes, it's one of the cheapest way to reduce your energy needs and have clean air, plus it's fairly low tech system


ERV = Energy Recovery Ventilator


Also, they usually hook up the interior air intakes to bathrooms so smells and extra humidity have a constant flow out of your house.




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