I have talked to a few geo installers and have gotten conflicting info. One tells me to do a geo heat pump with a propane back up furnace for when the geo cant keep up with the cold ohio winters, basically a split system. He told me when the system switched to the auxillary heat strips it drastically increases your electric bill and switching to propane is more economical. The other guy tells me to do all electric water furnace system or climatemaster and that only 10% of the strips should be on and using the propane shuts off the geo system so your losing the effectiveness of the geo and only using propnane, which is uneconomical. My husband and I are getting very frustrated with the conflicting info and he is getting leery of spending so much money for something that he is scared won't work. Any info would be appreciated.