I was surprised by how much heat this propane burner put out. On low to medium setting it can certainly keep 2-3 people warm on a cold night. The heater comes with a fold out base that helps keep the propane bottle from tipping over, and the heater element easily screws into the bottle. Lighting the heater is a breeze with the push button start. This is a very functional heater.My concerns though are with the build quality and durability of this heater. The plastic base has stabilizers that fold out and these are thinner plastic supported by a screw and I worry that these won't hold up with use. While the plastic base slides on the propane bottle fine, it doesn't stay on so it you see decide to move the heater it just falls off. Another concern is that the heater portion has an exposed wire that looks like it runs to the igniter. With it being exposed I worried that it's going to get snagged or worn out by the heat exposure.My last concerns are safety related. It seems that that the burner element may be a bit small for this heater. Not because it doesn't get hot enough, but because when you turn the setting past medium the propane gas flow seems to heavy and creates a flame that comes out of the top of the heat shield. For this reason I keep the heat setting at medium or lower. Lastly, this is said to have a tip over safety feature but I tested that out and it kept burning even when I tipped it over on its side.All in all this is a very functional heater and puts out a good amount of heat. Had it not surprised me with it's heat output, I probably would have given 3 stars due to safety and durability concerns. Given that durability needs time to tell, I only deducted for the safety issues.