Installing Controlled Outside Air Introduction
I have a two story house in Atlanta GA that was built in 1984. I recently had a blower door test and received a rating of .47 ACH Natural. The top floor is 1700 sq ft and the lower floor is 1400sq ft. I was told by individuals I should be concerned the house is too tight and I should installed fresh air system on the upper floor. I have some additional insulating and sealing projects above the garage in the bonus room and knee walls which will likely tighten the house up a bit more.
How do I evaluate whether I need this fresh air system? Are there symptoms of too tight a house?
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