Trevor Bell was easy to deal with, I had discussed an air to water heat pump installation with him previously and he was one of the few people who was genuinely expert. we used some one else for that in the end for other reasons, but he was excellent so when it came to the air to air install he was my first call. his guys were punctual, polite, very efficient and tidy. they spent the time to set up the system and explain it. great service, excellent product. I will use these guys again.