>Help!!  I am needing to heat a 22x30 garage

>Is propane substantially cheaper to use than the kerosene?  Since the
>30k btu unit didn't do the trick, any guess as to how high I need to
>go?

To heat my shop I use propane.  I don't have a natural gas line run out
there.
I use an old house furnace that was originally natural gas.  I re-jetted it
to burn propane, this is easy to do.
Used house furnaces are free to very cheap and put out lot of heat, mine is
100,000 btus.
Even in the coldest weather, you can warm up a poorly insulated building
fast.  House furnaces are forced air, not passive, so you don't really have
to pre-heat your garage ahead of time to feel some warmth.  They are also
quiet, compared to construction heaters.

Most people don't want to heat their garage all the time, just when they are
working on their vanagon.  When it's minus 10 Fahrenheit, a house furnace
will make an un-insulated garage comfortable in less than 5 minutes.

Gary Lee
http://www.telusplanet.net/public/gary2a/vw.htm