"I worked on a ZERH home in 2012 and 2013, and it was a new 2x6 framed structure on an existing foundation. The home was built in Cape May NJ. The insulation levels were R21 Fiberglass in the wall cavities with a 1/2 inch foam…"
"If the sheathing is being removed, then installing a layer of rigid foam under new sheathing is appropriate. There should be a non condensing insulation layer adjacent to the "roof" sheathing. In the DC climate zone this is…"
"looking at the information provided:
1 - is the system a multistage unit to better match load as well as zoning demands.
2 - is the heating capacity properly matched to to home demand - does the backup heat run?
3 - is the cooling capacity too large…"
"My home also has variable speed blower and a special blower setting to maximize system performance and moisture extraction. I have attached an extraction from the air handler documentation showing how the blower operation can be moderated.…"
"Some manufacturers have a ramp down and in some cases a ramp up fan behavior (variable speed blowers) that run at lower speeds for a few minutes at the end and beginning of the cooling cycle to extract more moisture from the air stream. This…"
Jun 28, 2012
David Berg just added their location. (via Member Map)
"In my Testo 327-2 analyzer, there is a NO filter that removes the NO before the CO sensor. It is one of the maintenance items that has to be replaced when the absorbing chemical is consumed. Are you concerned about the CO readings or the…"
Combustion Appliance Zone Testing (CAZ) Made Easy (March 24, 2016)
-Adapting to the new BPI standard
-RESNET testing requirements
-NFPA testing requirements
-Best practices for best results