The calculation normally used for heating in New England is 12,000 BTU's for
a 12' x 12' room ( in a house ) with 8' high ceilings and average insulation.
If your is a lot higher the heat will definitely rise to the peak. You
might consider paddle fans near the peak to send the warm air back down.
I've seen used mobile home hot air furnaces employed in your situation.
They work pretty well. Some are designed for kerosene and some for gas.
The gas models can be adapted for either natural or propane gas. The
furnaces that have a gun burner are made so that either a gas burner or oil
(kerosene) burner can be installed. Check with mobile home salvage companies
or mobile home sales lots that take in trades for used furnaces. Something
3-5 years old will sell for $200-300. Check it well or have someone else
check it for cracks in the heat exchanger. The burner will have to be pulled
to check it. The typical MH furnace will be 50,000-70,000 BTU's.
I'm sure there are other heating possibilities, but this is a fairly
inexpensive solution. Also be sure you get a thermosthat for it. The
weakest point wiil probably be the insulation on the overhead door and the
seal around the door. Be sure you check into this. There are insulating
materials that will help it quite a bit. Mark
|