I think I might just end up using the compressor on this unit as a vacuum pump, and make a recovery machine for the next unit. Being at the end of summer they are just giving away air conditioners on craigslist! I've wanted to try propane for A/C for a while now, but I didn't realize the smell would be filtered out. That could be a problem. If I got set up to use and reuse R22, I have a lot of projects in mind.
