I went overboard with mine before it died and put one of these in:
The washer is mounted on a furniture dolly with a plastic tote full of solvent mounted below, I cut a hole in the bottom of the tank and installed a kitchen sink drain and strainer to allow back to the tote. I should have bought a lower gpm pump, the one I got has 1" fittings that I reduced down to 1/2 and when the hose gets to the tank I have three outlets, two just run wild and one with a flowing brush; all three have to be open to keep the pressure down. And it's loud, not to the point I use ear plugs, but loud enough the wife won't come in the shop. She won't come in with the air compressor running either. I use the AC and the parts washer a lot. Even when I don't need them.