I have a Series 5 Water Furnace that has produced nothing but high electric bills since it was installed a few years ago. The installer maintained it for the first few years and always blamed it on insulation, compressor settings etc.. I finally had another company look at it and they said the temperature in was 95.4 and the temperature out was 102. PSI is 10 our and 12 in. They said it may have air in the lines removed and additional water added. However, they said it might not be worth doing until they can determine the number of wells and their depth because the system might not have enough wells. I'm still trying to track down the number and depth of the wells. Is there any sure fire way to tell if a system doesn't have enough wells or is there an in expensive way to bleed the system or check for air? I don't want to waste $750 to have it pumped/vacuumed out and then realize I am a well short.