I opted for the single Panasonic unit and water cooling for our main living room. We get the sunshine over the apartment most of the day which is wonderful but it can be very warm in the peak of summer. This system suited our needs perfectly. I was able to book an installation slot ahead of time and the 3 part deposit payment method made it easily affordable. When the installation team turned up they were pleasant, happy and engaging. They worked as a pair and were able to finish the installation in a few hours. As per the pictures, the only hole in the ceiling was one to run the piping to the unit. I chose to have it above the doorway and they were able to fit it into the door frame. The recommended decorator was also brilliant. The making good was just professional and quick. The unit is quiet with the compressor in the utility cupboard with our heat exchanger which has a quiet hum also. It cools the room in a couple of minutes and easily maintains the required temperature. Cost wise it is seems to be around £1 a day even with the high electricity prices at the moment. I am super thrilled with it and thank you!