"Glad they used insulated duct for the fresh air intake ;)
Have you considered sectioning off the water heater and furnace from the rest of the laundry area? Make the that unconditioned space. How about a vent between the laundry area and the rest of…"
"Hi Jerry, your classic can of worms.
Each of us must decide where we will draw the line, that line where we can be blamed for making conditions worse and this is one. Any improvements on air sealing could affect that CAZ, therefore, IMO, I…"
I've encountered an install of 6" duct directly connected to the outside through the rim joist and covered by a simple mess screen on the end. The other end has been placed next to the gas furnace as make-up air. The cold air just pours in whether the furnace is active or not. There is a clear need for make-up air as the CAZ is very small and the DHW and furnace are next within a couple of feet of each other. Any advice on a simple mechanical option to better regulate this situation. (The…See More
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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