That's what i use, but propane. Not as much of the smell. 150,000 btus will heat a 3000 sq. ft. house, I know because I'm a builder and I also use it for that. Set it on the low setting, and the garage will no longer be cold. Get out the t shirts.
I thought about getting the propane torpedo {salamander same thing} but I always run out of fuel on the BBQ on the weekend when the propane place is closed and wind up having to get raped for a "trade a cylinder" at the gas station. 5 gallons of kerosene lasts me forever {don't use it much} and is as easy to buy as going to the gas station for $1.50 a gallon. Besides I've got a tall ceiling in the garage and the fumes don't bother me. If you run the diesel, it smokes a little more but still does ok. One more thing, the electric to run it is insignificant. All its running is a small pump and the blower. Probably less juice than a 1500Watt heater. I gotta tell you 150,000 BTU's is much better than 1500 watts