Like most of us, I'm out of floor space in my 1 garage shop. I really want to get an air compressor system, and my choices are (1) get an undersized ~20 gal tank on wheels and locate it inside, or (2) get a stationary ~60 gal tank and locate outside and under a roof. #2 would be exposed to the everyday weather temperatures, and building a protective cabinet makes the project more trouble than it's worth. My ?: Is it safe and practical to locate a tank and compressor outside on a long term basis?