Bests & Worsts Reviews from Amazon

Efficiency - It does use a considerable amount of fuel if left on (even on low). My Colorado 2 car garage with very minimal insulation heated up 18 degrees in 30 minutes. I use a small fan to circulate the air. The temp outside was 35f. Worth the $75 as long as you're ok with having to control the fuel consumption manually. I use it on a 20lb propane tank and got about 15 - 20 hours on low. (about a dollar an hour in my rough math) I get it, a thermostat feature would take it past the $75 price point, but still - someone should look into adding that feature at this price point. Durability - Well built for price point. It was accidentally tipped over and didn't even dent it. I have about 40 hours on it now and the element is barely showing any signs of wear. Based on cheaper versions and very rough math, I think it will last about 1000 - 1500 hours. Dependability - Starts every time easily. All-in-all - My family loves it - we spend a lot of time in the garage working on stuff and hanging out with each other. They are happy I bought it. Hope this helps.