Installed tri-zone Mitsubishi system. Excellent customer service, very professional! Sales representative gave us great information about the product and we are very satisfied with his suggestions. Great job! The technicians's skills are exceptional. Very satisfied with their neatness and they are also very respectful people. The startup technician? explanation was great and very clear. Is been a pleasure working with Richair, excellent service. We would highly recommend Richair to all my friends.