On Nov 22, 3:40 pm, "john"
wrote:
I is, in an airtight house, but most US houses naturally leak 10 times
more
fresh air than needed for health, so HRVs and ERVs are useless.

Nick

I dont know about that.... regardless of how much fresh air leaks out, if
there isnt any coming in....thats much worse. I'd rather have atleast some
fresh air circulating throughout.

In any house....EXACTLY the same amount of air that leaks out, leaks
in... think about it.

Mark