I want to thank everyone for the info.
My choices are electric, propane and kerosene.
What I really need is what electric medium is the most efficient?
From the link we received it seems electric may be the easiest and
least expensive start-up cost and comparable in running cost.

Bingo Field,
What were you doing in the Imperial Valley?
I lived there from 1999 to 2004.
You should see Glamis now. Thanksgiving and New Years
weekend will draw over 100,000 people; doubling the population
of the county for the weekend.
For you not knowing about Glamis; it is miles and miles of open
sand dunes. The buggies run wild and the beer flows freely.
My wife worked at the local hospital and working those weekends was mandatory.

Up here in the mountains of Northern California, hundreds of miles from LA,
we don't have palm trees but we do have a lot of very boring, self absorbed residents.

Thanks All,
KW_Counter

Glamis Beach Bumb!! And living in the mountains in Norcal I did know a lot of folks that had family trees that looked like a telephone pole.

Met a few of those myself.

There was no joke there, I can give you names. If you came up the hill for any of the events I'm pretty sure you did meet some of them.

Fanless systems are the most electrical efficient. These are usually radiation based. Instead of heating the air and moving the air, the radiation directly heats the objects in front of it. Less energy is needed because less mass/matter is 'heated' and subtract the motor. With fan systems you need to heat the air first then move it, then the surrounding area heats up. Physics 101 .

I actually use a hybrid set up. I have a tank mounted radiant propane heater (dual head). Works well in the immediate area but doesnt put out enough energy to heat my non insulated garage. I have a small fan behind it the blows the rising hot air into the general area. If I wanted to heat my entire non insulated garage I would need a 60,000 btu heater... thats getting up in cost in equipment and fuel []

What is the most efficient in terms of money... depends on the total system efficiency and the cost of fuel/power. Use the energy calculator I posted earlier.

What is the most efficient in terms of energy (as in joules)... not electrical for sure! Natural Gas has the highest [link=http://en.wikipedia.org/wiki/Energy_density]energy density[/link] but the heaters are not 100% efficient...

Oh, I know it's no joke. I know exactly what you are referring to.