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Old 09-18-12, 07:02 PM   #7
Apprentice EcoRenovator
Join Date: Apr 2012
Location: Phillips, WI
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If it's cold outside, and humid inside, then you definitely need some ventilation. You can leave one or two windows open an inch or so. This works, but is not energy efficient plus it's drafty. Or you can put in a ventilation heat exchanger. The advantage of the heat exchanger is that it's both energy efficient and not drafty.

A friend lived for over ten years in a tight house with a noisy dehumidifier grinding and groaning all winter long. He suffered from asthma the entire time. We finally persuaded him to put in a ventilation heat exchanger. No more need for the dehumidifier, and his asthma problems went away.

Outside air is cleaner than inside air. And healthier.
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