(1) AC Mainteance - 410A - BOSCH HEAT PUMP - tested high and low voltage components, checked Squirell cage fan clean at this time, cleaned exterior of unit, checked delta T ok receiving good temperature split noticed split, tested primary pan with water no leakage at this time tested condensation pump multiple times no leakage at this moment, inspected electrical wiring, Supplied and Installed 20x25x4 HealthyClimate filter highly recommended for client to purchase his own filters for us to install, noticed heavy signs of rust on drain connection and exterior of unit, client mentioned that he has been experiencing issues with his T6 Thermostat so he purchased a T9 WiFi Thermostat for us to install. Explained to client that this work will be bill-able, client approved pricing for Thermostat Upgrade, removed old thermostat - Installed new T9 Thermostat, Set thermostat, went over thermostat with client and showed how to use every mode, At condenser checked refrigerant pressures, inspected