We bought a heating and cooling system from R&D and they installed it for us. We've been on a service contract since then where they come out every Spring and every Fall. The latest service we had done was cleaning the coils on our outside condenser, which they had recommended. They did a great job with that. They're very informed and they give you the scoop. The prices seem like they are going up, but they are reasonable. I recommend R&D Heating and Cooling to all my family members.