Quote:
Originally Posted by bobkoure
Or you figure you need a certain minimum flow of fresh air .... Take that as a given... At that point, whatever heat / cooling you recover counts as free energy.
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My point exactly. Yes then there is money to be saved.
Another problem would be condensation. If you take to much heat out of the exiting air you could get condensation. Perhaps that's why what's on the market is inefficient.