We have been customers of R&D Heating, Cooling & Electric for several years. They Maintain our generator for us. I'm giving this review while our generator is running; we had a windstorm earlier and our power went off. I'm glad I had a good running generator. The lady who came out recently to service our generator was kind, considerate, and took the time to explain what she would be doing. She was also right on time, which is nice. I highly recommend them; they keep our equipment working, and are prompt, knowledgeable, and courteous.