tim5055 Posted February 20, 2015 Report Share Posted February 20, 2015 Well, for those of you who have not followed our continuing saga, here is the short version. We are within a couple of years of retirement and have purchased (hopefully) our last home in the mountains of North Carloina. I've been here for two weeks with painters and other assorted folks getting things sorted out. Well, this "artic vortex" as the news likes to call it has me thinking about the furnace. Currently the house has a 4 ton Trane heat pump installed. The compressor is 2002 and the air handler is 2004. Air handler is installed horizontally in the crawl space. Back up heat is supplied by resistance coils. The current temperatures are unusual, but the current configuration just can't keep up. I like gas furnaces and had the Trane dealer come out to give me a price on switching it over. One comment he made was that this furnace should have 4 coil packs providing the back up heat, but by the temperature coming out of the ducts he suspects one or more are not working. Surveying the complete install he also said the amount of return is not sufficient for the 4 ton with the number of registers installed. His recommendation is to change the air handler to a gas furnace with the heat pump/AC coil installed. It will be programmable so that down to "X" ambient outside temperature the heat pump would run, then below that the gas furnace would take over. Or, I could manually go direct to gas. Options would be 80%, 90% or 95% efficiency on the furnace. Hopefully this,will be our last house, so I'd like to get it right. One other thought is that with my 15,000 KW generator I can't run this resistance heat, but could run the gas furnace. (The generator will move with us from the current home in SC) So, thoughts? Fix what we got and stay with resistance back up or switch? Quote Link to comment Share on other sites More sharing options...
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