Proform Treadmill's are made to last in extreme situations such as hot garage temperature, heavy usage, and the likes. However, to maintain it, there are a few steps you should take. First, ensure to wipe it after each use because sweat encourages germs and bacteria to be bread on the surface. Secondly, ensure you periodically add lubricants to ensure things keep running smoothly.
Furthermore, ensure to take a good look at the screws and belts from time to time.