Forum Discussion
dubdub07
Nov 23, 2015Explorer
My Discovery only has a middle unit heat pump. It works VERY well into the low 30s and during the day. At night the propane will need to be used. Also, mine will transition automatically to propane, although not very timely and after a lot of cold air is pumped in. Not sure the Discovery came with 2 heat pumps in the late model years.
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