This is the first time I have used the service, so my feedback is based on that. I called R&S Mechanical Heating & Air Conditioning for the tune-up for the HVAC unit. I like the service overall. The technician came in on time and did everything as I expected. He gave me information about how much money I could save from upgrading from a tune-up to a regular maintenance plan for the year. I like the technician and everything from that service.