"It sounds like your (100cfm) may be too low for a 5000sf house. Are you following 62.2? Also, Zehnder wattage should be around 24W from my knowledge. These units have been installed in Passive Houses. The sensible recovery seem low as well.
For too long there has been relatively little EE focus on multifamily, but some new programs have recently started. This group gives us a venue to share our experiences on cost effective audit & retrofit strategies and analysis tool needs.See More
"I don't think anyone can dispute the fact that the roof would be cooler, although putting a number on it would be difficult.
As far as using it to lower the cooling load and therefore the KWH, in my opinion would be risky and unwarranted.…"
"The IECC code states that the area between a drop ceiling and roof is considered as unconditioned.
I don't know why it would be unfeasible to test the ducts, and I'm not sure of the parameters of why they would be tested. Is someone saying…"
"Interesting observation. It sounds like your a good Home inspector.
It seems to me like the air movement is the from the latter. The air is moving through the wall assembly caused by the Delta-P, and it is showing up where the…"
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