Unfortunately, unless you have a wood burning stove, or a fireplace insert, general indoor heating isn’t practical. Propane heat isn’t a good idea because of the ventilation needed. We have no type of fireplace in our home, so would uncover windows that receive direct sun and as soon as the sun has moved past, uncover the other windows with direct sun. Make sure that the insulation is intact and abundant, and use insulated window covering. Hot water bottles for beds work beautifully, too. The approach is to heat the people, not the air.

Hi Jeff, Yes, the 100 pound tank is HEAVY. But the guys at Tractor Supply loaded it into the truck. I strapped it against the cab. You would definitely need help getting it in and out of the truck bed, but we kind of walked it into place once we were home. Tractor supply has several sizes, including a 30, ($109) 40 ($149) and 100 ($229) pound size. For overall cost effectiveness, the 100 pound is best bet, but since you can buy the filled 20 pound tank for about $60 at an exchange place like Walmart, that is probably your best bet for convenience of use with the generator. I know you can buy adaptors to use propane with some generators, but not all. I think I'll look into that. Propane tanks can be stored anywhere dry. They should always be stored AND TRANSPORTED upright. Since basement floors can sometimes wick a little moisture from the soil, It would probably be good to set them on a couple of bricks. I would not run a generator on ANY fuel indoors. Thanks for the great questions.

The conversion kit for the generators runs about $200. A duel fuel generator of sufficient size will run anywhere between $500 and up. I saw a good deal for around $800 on Amazon. I think it was 12000 watts.

I already have the dual fuel type generator. I guess my biggest concern then was about storing it in the house. Thanks.