I love this product and would buy another if needed. I’m not crazy about the way the exhaust comes out the bottom but if I was sold with a 45 degree elbow it would make it easier to set it down on something without having to kink the exhaust so hard. You would want to bend that flexible exhaust pipe before you hook it to the heater because you could possibly break off the mail and coming out of the bottom of the heater. If you tried to bend it while it’s attached I just added a couple wooden blocks to my legs on the sides to make it 2 inches higher To solve the problem so it’s an easy fix But as far as heating goes, it’s really quiet and it is very easy on fuel and it’ll burn you up, not seriously but you wouldn’t wanna have your fingers against the vent