R&D Heating, Cooling & Electric installed my heating and air conditioning unit about two years ago and they have been taking care of it ever since. Most recently they serviced the unit for me and installed all the updates. They are very friendly people, and they seem very knowledgeable and professional about their work. What I like most about them is that there are never any issues. They get here on time, and they do what they are supposed to do, and everything keeps on working without any hassle. I like it when things work that way. Smooth! This is a good company and I highly recommend them!