Here is a quick breakdown of the time taken to service an AC. Part 1: 5 minutes of preparation, water pump, and electricity connection Part 2: 5 to 10 minutes for cleaning the inside filter and fins, as well as drain purging   Part 3: 5 to 10 minutes for cleaning outside fins  Part 4: 5 minutes for checking the gas pressure and current flow. Part 5: 5 to 10 minutes for testing. Part 6: 5 minutes for winding up and getting the payments in place