Upon my arrival I performed a 6 month checkup on 1 heat pump system. Flushed and treated the water removal system, washed the condenser coil using water, cleaned and treated the electrical cabinet then verified system safety and performance. I found the indoor air circulation system needs to be pulled and cleaned and both air filters are ready to be changed. Customer will pick up new filters and would like the cleaning options emailed over to view. Found the rest of the system performing to manufacture specifications at this time.