at my dads we have a kerosene heater, it stands up, not a torpedo. hes had it forever but it works awesome
same here, vintage, and yes u can use them in the garage spence.
My dad has a house furnace in his garage, works great.
yeah but I dont know jack about hooking up a furnace, hoping maybe someone maybe on here would but whatever
Im going to look into one of those larger propane tanks, the 5 gal or whatever gas grill size is not cutting it. Maybe do some insulating and maybe add another blue flame heater.
IF you need a hookup on getting lines run to your garage for gas heaster, let me know.
I have a Reznor in my garage, works great, thermostat set to 60 all winter long 
You can also covert natural gas units to run on propane tanks if running a line is not an option
I just turn on the halogen light near where I’m working and it stays warm enough for me. I only have a 1 car garage though.
I think those Kerosene heaters that look like jet engines are your best bet. We used to use one to heat up the basement of our fraternity house up in Potsdam winters, and it did a damn good job.
I used a bullit propane heater last winter. A 20lb propane tank only lasted about 16 hours. The heater was noisy and annoying. This winter Im going to buy a propane convection heater (stand up).
I was told to stay away from kerosene heaters because they leave a film of kerosene residue on everything in the space they are heating. This seriously fucks up paint jobs.
I prefer the cleanest approach anyway. Id rather not breathe that shit either.
im telling you all, i have had each one of these setups, the best option is: Insulation + woodburining stove
I use this in my 2 car garage:
http://www.homedepot.com/prel80/HDUS/EN_US/diy_main/pg_diy.jsp?CNTTYPE=PROD_META&CNTKEY=misc%2FsearchResults.jsp&BV_SessionID=@@@@1529366799.1129928364@@@@&BV_EngineID=cceeaddfmllhhjgcgelceffdfgidgkk.0&MID=9876
It works good enough to make it confortable in jeans and a sweatshirt as long as I give it about 30 minutes to warm up.
home generators?
couple of things to add to your garage… and your all set.
+ 
The only drawback to these radiant heaters or any vent/free heater is the moisture they produce not venting the exaust outside.
I used the same thing. The tank lasted more than enough time, as I only had to run it for about 10 minutes before the two-car garage was warm enough. I would only have to run the heater once or twice for the 3-4 hours I was working. The lack of smell from the propane was better than the stench of kerosene.
we have a small natural gas furnace in our garage, but im usually too lazy to unburry with all the crap that gets piled around it during the summer. so resort to a kerosene heater. salamanders are nice except they are pretty damn loud with the fan running.