I have used Richair for years now. They are the best company of their type that I have found in the area.
The technicians are very knowledgeable, much more so in dealing with the hi velocity forced air and tankless water heater system that I have, than others that I have tried.
The technicians are always very professional and clean in the house. They appear to know the equipment very well.
I absolutely recommend Richair Comfort Solutions