1st i'm in michigan, Lowes sells the torpedo heaters and around Jan i believe they go on sale for half off, i bought 2 last year 50,000 btu, one cost 100 bucks the other 50 because the gas cap was missing, i use them all the time, there is a little smell, i've never had the garage door lifted up for ventalation (FORGET ABOUT MY SPELLING), now that i have 3 old cars in the garage i don't have room for 2 torpedos, use just the one, when i was rreally into working on the cars during winter i could burn up gallons of fuel, especially when it was .99 a gal, i've gone the wood stove route, and it heated up the garage great, but it did use up lots of wood, and as far as the propane, thats expencive, just my 2 cents