No propane. I use a portable gen right now. Its rated at 7K run and 8750 surge. I can have it set up and running the whole house except the heat pump in about 10 min. Problems are I'm getting old and my neighbor had a big standby gen installed so now my wife is really wanting one. I don't like what ya'll have told me about propane. I keep thinking that a 250 gal tank isn't going to hack it but then most times it would. Its been a long time but I keep remembering the time we lost power for about 2 weeks. That would have been a lot of propane. Maybe a bigger portable installed in an enclosure outside would be better? Oh well, just thinking. I've got a guy coming Thursday to give me some options and prices. I really appreciate all the input ya'll have given me so far.