Bought two of these for emergency power for heat pump failure or other emergencies. Small, easily corrected fuel line leak out of the box on one and some difficulty learning the controller (terrible directions and different than a lot of YouTube videos) are my only issues. I don’t use thermostat mode, just manual. I have them on stands completely outside but the heat is amazing and I only need one, but glad I have a backup. Well worth the price. I run them with a 15amp AC-dc power supply plugged into outside outlets with a switcher to cheap batteries for power failure. Just enough time to get the generator and run them off of that for total power failure. I keep a lot of gas and generators so big AGM batteries just wasn’t my desire. Great purchase.