Preventive maintenance, replacing capacitor and 2 wires.
A mouse had built a nest inside the control panel, chewed thru wires, and shorted out the capacitor. They fixed it, removed the nest (and the babies :( ) and cleaned it, tested pressures, etc. They charged $163 for the whole thing and didn't even once mention replacing my 17 year old unit (as some other companies have). This is the second time they've done work for me, and it's always been my experience that they do a great job at reasonable rates.