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rdunk · 12-17-2007, 08:33 PM

Quote: "One more question - is it correct that while the heat pump or gas furnace is in operation, both are circulating warm air into the under compartment where all of the water lines are?"
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Nope! The heat pumps operate in the same way as in the A/C mode, as far as air circulation is concerned. There is no conditioned air into the storage or lower equipment areas from the heat pumps. Air and return air vents are in the ceilings

On our 2005 RE, the furnace return air dumps down into the lower areas. So, when the temps are at freezing, or below, the furnace does need to be running to help keep water lines, etc. from freezing (hopefully).

12-17-2007, 08:33 PM	#5
rdunk Senior Member Join Date: Jun 2005 Location: Texas Posts: 482	Quote: "One more question - is it correct that while the heat pump or gas furnace is in operation, both are circulating warm air into the under compartment where all of the water lines are?" .................................................. ........................ Nope! The heat pumps operate in the same way as in the A/C mode, as far as air circulation is concerned. There is no conditioned air into the storage or lower equipment areas from the heat pumps. Air and return air vents are in the ceilings On our 2005 RE, the furnace return air dumps down into the lower areas. So, when the temps are at freezing, or below, the furnace does need to be running to help keep water lines, etc. from freezing (hopefully). __________________ Robert Robert and Carlene 2005 RE3, S/N 2107 (sold Jan. 2010)