Complete 2 system a/c repair and preventative maintenance check.No cool for upstair system. Found compressor drawing high amps, low on freon and rusty coil. Found compressor has high head pressure. Installed compressor saver for upstair, 2lbs of Freon and Freon leak seal. While adding Freon for upstair, downstair system compressor stopped running. Found compressor overheated. Cooled the compressor down with water and put back the disconnect and compressor did not come on. Cooled compressor again and added a compressor saver and system came on. Replaced both clogged filters and chemical clean both dirty condenser coil. The downstair system has a high chance of compressor going bad. Next step is a tripped breaker and will have to get system to replace. Both system is cooling at this time.