In August, I needed to replace my single zone mini ductless system that had been in use for 15 years. My house is an attached brick townhouse built in 1921 in the Bronx. The Richair sales rep Derek came on time for the scheduled appointment and provided in-depth information. The installation was for a 5-zone mini-ductless system. The technicians were professional, personable, and very accommodating. One of the details I was happy with is that the technicians utilized shoe booties inside the house to eliminate tracking dirt and dust. The work was completed within 8 days, and I have to say I am very pleased with the outcome. Their attention to detail and proper installation was outstanding. Once installed, the startup was completed by another technician who was thorough and very detailed oriented. He went through the entire system and explained the use of the remotes and how to get the most out of my system. I know the value of what I received and can attest that Richair lives up to their classification as a Diamond Elite Mitsubishi Contractor. I highly recommend Richair.