I set up a Campbell-Hausfeld 3-piston compressor next to an Ingersoll-Rand that was the main compressor and was having problems. The C/H is continuous duty rated and by itself can easily run the wash with a Vector that uses a lot of air. The two tanks are just tee'd together which should save a little motor wear and tear since it runs longer to fill and kicks on/off less often. I made sure to use a unit rated for continuous duty so it could operate long-term without worrying about it.