Heater tune up Smithville Upon my arrival I performed a 6 month checkup on 2 heat pump system. Flushed and treated the water removal systems, washed the condenser coils using water, cleaned and treated the electrical cabinets then verified system safety and performance. Found both systems performing to manufacture specifications at this time. The main system has developed bacteria growth inside the air handler. This is not something the customer wishes to deal with at this time due to the time of year it is and other expenses that hold priority. Showed the customer how the auto feature works on both thermostats.