Complete 3 system a/c repair and preventative maintenance check. Found all systems 13 years old running on r22 refrigerant. Pressures are good at this time. Informed customers of phase-out. Blowers on all systems are clean. Systems running with only drain pan float switch. Needs inline float switch to protect the furnace from water damage as well as the house. The customer had complaints about air transfer to the upstairs rooms. Vents need to be redistributed to allow for better air transfer. The outdoor unit for the main floor has a bad capacitor and needs to be replaced and the unit for the front part of upstairs needs a new contactor because of pitting. All other components are working well.