Upon my arrival, I performed a six month check up on a zoned mini split system. Flushed and treated the water removal system, wash the condenser coil, using water, cleaned, and treated the electrical cabinet, then verified system safety and performance. I found the system is operating to manufacture specifications at this time. One thing I did fine is that the filters were dirtyand that the heat transfer media coil on the ducted mini split system needs to be clean. Both an and B are needing cleanings on the deducted mini. And that the heat transfer media coil on the ducted mini split system needs to be clean. Both an and B are needing cleanings on the deducted mini split system. This is something I’m going to have to get with the manufacturer about. On the best way to access the indoor heat transfer media coils for cleaning once I have obtained this information I will email over estimates for the cleanings. .