I bought this for a 2 car garage with loft. Currently the garage is not insulated, but I’m working on that. It is able to keep some of the chill out of the air and after a few hours of running it starts to get a bit warmer. That being said I’m on a 5” slab of concrete so it’s a massive heat sink. Based on the rated heat output of the device, it’s doing quite well for what I’m expecting it to do, as my demand is much higher than it can supply at the moment.If you are installing in a garage, you will need a marine through-hulk exhaust and something to route the intake outside. And a 12v power source at least 15amps.My only complaints so far with it are that the company rates it at 40 watts of power draw, but on startup and cooldown it peaks around 140-150 watts as it’s running the glow plug before dropping down to about 40 watts. They also have intake and exhaust ports switched in the diagram on the website and the manual it comes with is poorly written. I was able to figure it out before I started the install with the help of some YouTube videos. It also doesn’t come with a fuel filter installed, so I had to buy that separately. My only other issue is that when it starts up it smells like diesel coming out of the hot air output but I’m getting no readings of carbon monoxide or any visible smoke to accompany that smell so not sure what to make of it. It goes away quickly though and once started there is no smell.I have run it for about 3 days, 6-8 hours each day and used about 1.5 gallons of fuel. From my research I’ve read that it will run on just about anything. So I’ve been mixing diesel with the couple ounces of fresh oil I had left over from oil changes. I also put some 2 stroke oil in with it and no issues. Good way to clean out all the miscellaneous bottles in the garage and get “free” heat. I plan on burning waste motor oil in the future with it once I have a good way to filter it before I burn it.I would recommend this to anyone with enough skill to be able t