I stayed up late last night with energy form CF-6R-MECH-05, and in the end settled on a Braun bathroom exhaust fan that can be tuned down to 40 cfm, draws 4.9 watts and is rated at <0.3 sones. It will run 24/7 and take care of compliance. I'm intrigued with the concept of an HRV, and if I were to go in that direction, I think I'd like to DIM, but for now, I'll stick with the 40 cfm fan and a "pretty good" job on the house. mm
Last edited by michael; 03-21-13 at 08:36 AM..
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