Our Current HVAC Mess – GreenBuildingAdvisor
Musings of an Energy Nerd Experts discuss problems with residential HVAC systems as a first step toward defining solutions By Martin Holladay | December 5, 2025 Many HVAC contractors are highly skilled. That said, our current economic system is not properly rewarding high-quality residential HVAC work. Photo credit: Fine Homebuilding / Fujitsu More Musings of […]
We are building in zone 3B with a conditioned attic. Does Roxul ComfortBatt R38 insulation at the roof deck and R21 in the exterior walls perform better than fiberglass insulation of the same R value? It is about $20k more to use the Roxul Comforbatt insulation and I am having a hard time justifying the […]
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Hello, Builder/owner considering the Panasonic spot Erv Fv-04VE1 for my 900 square foot new construction house in coastal Maine. Its a tight house, assuming under 1.0 ACH 50, and my CFM needs are around 30, so I feel like it’s sized right. It’s an open floor plan with 12 foot ( on average) vaulted ceilings […]
Hi all, I’m about to start drywalling over my vapor barrier, and it occurred to me that a few “patch” pieces used in some cathedral ceiling corners do not have any of the blue printing on them, so I don’t know for sure if they were installed in the correct direction. I know that the […]
Hello, I’m Andy I am located in southern Ontario, south of Ottawa. I’ve been trying to diagnose an ice dam issue on a home I built last year. There is a roof leak in the area of the vent stack. I did not install the vent stack and boot, so I’m unsure if there was […]