EcoRenovator - View Single Post - Help me get the most out of heatpump water heater

mackstann · 01-30-15, 01:37 PM

I think a garage location is pretty ideal already.

If you duct only the output of the WH to the house then the output air may not actually be cool enough to help. GE says you should only do this when the garage air is less than 15 degrees higher than the house's indoor air.

If you duct the input and output to the house, then the WH will (I'm guessing, not 100% sure) be less efficient since it won't have access to that extra hot garage air. It will also be a hindrance in the winter. I know it doesn't get that cold there, but it does get cold enough to want to avoid "free" AC dumping into the house.

AND, you are generally not supposed to run ducts between the house and garage. It is a fire safety and indoor air pollution issue.

01-30-15, 01:37 PM	#9
mackstann Lurking Renovator Join Date: Jun 2013 Location: Portland, OR Posts: 21 Thanks: 0 Thanked 3 Times in 3 Posts	I think a garage location is pretty ideal already. If you duct only the output of the WH to the house then the output air may not actually be cool enough to help. GE says you should only do this when the garage air is less than 15 degrees higher than the house's indoor air. If you duct the input and output to the house, then the WH will (I'm guessing, not 100% sure) be less efficient since it won't have access to that extra hot garage air. It will also be a hindrance in the winter. I know it doesn't get that cold there, but it does get cold enough to want to avoid "free" AC dumping into the house. AND, you are generally not supposed to run ducts between the house and garage. It is a fire safety and indoor air pollution issue.