Upon my arrival I performed a 6 month checkup on 1 heat pump system. I flushed and treated the water removal system, washed the condenser coil using water, cleaned and treated the electrical cabinet with electrical insecticide then verified the systems safety and performance. I found the indoor air movement system needs to be pulled and cleaned. Spoke with the customer about their options for repair and they approved HK11A. Will need to schedule a return date.