Heres the scoop, i am about to purchase a 1969 ranch that has all cable ceiling heat. The home also has a central air unit installed. The people who owned the home have lived there since 69 and just moved a month ago. I have no idea how eficient the home is but i know they blew new insulation in the ceiling above the entire house not too long ago (im guessing because they are still using the radiant ceiling heat?) What is my best option to heat the house? I also want to get rid of the swirled texture ceilings and spray knock down in every room. I am affraid because of the cable ceiling heat it will harm it? I am not too keen on the idea of this kind of heat. Also it has a small pond, i havent even looked into how geothermal works yet but i know i have read something about ponds? Well just gettings started here and im sure many more posts are still to come. Thanks everyone in advance!