This is a great little heater for its size. It really pumps out the heat as advertised. I have a 20 x 20 insulated garage and it's perfect for that space. It's not quite as powerful as the ceiling mounted heater I had in my older garage but it's also not as large and much easier to install. The fan is a bit loud but when you have to choose between freezing your cojones' off or a loud fan it's a no brainer. Plus it only takes maybe 20 to 30 minutes to bring the garage up to temp.