Working on an AC maintenance and a two system house, also maintaining pool heater, checked all components in all units, check amps, volt, pressures, rinsed condenser coil's and polished units, vacuumed drain lines, cleaned the interior and exterior of indoor units with disinfectant, installed new UV bulbs, drain pan strips, filters, and batteries in thermostat, checked thermostats and humidistats. Installed new potential relay and run capacitor in the large Lennox system.