25% of propane related deaths caused by Carbon Monoxide

gtojohn · 01-22-15, 03:11 AM

the pvc flue on high efficiency heaters is because they run cool enough to condensate. They have draft inducer blowers.
Since your issue began with the new hot water heater, I would investigate what the difference is. Pilot lights can be adjusted higher, that might be all you need.
Fireplace and wood stove chimneys draft better if insulated. As long as your flue is located inside of your house i'mnot sure if there is much to be done. You might be able to build an insulated chase around it in the attic. Be mind full of the clearances.

01-22-15, 03:11 AM	#21
gtojohn Journeyman EcoRenovator Join Date: Jul 2014 Location: Austin, TX Posts: 314 Thanks: 39 Thanked 50 Times in 45 Posts	the pvc flue on high efficiency heaters is because they run cool enough to condensate. They have draft inducer blowers. Since your issue began with the new hot water heater, I would investigate what the difference is. Pilot lights can be adjusted higher, that might be all you need. Fireplace and wood stove chimneys draft better if insulated. As long as your flue is located inside of your house i'mnot sure if there is much to be done. You might be able to build an insulated chase around it in the attic. Be mind full of the clearances.