We have been using Hi-Tech Air Conditioning, Inc for about a year. We have a pretty sophisticated HVAC system, and they come out and do regular service and maintenance checks to make sure everything is running right and the units are ready for the upcoming season. They check the filters, they check for leaks, and they let us know if anything needs to be repaired or replaced. I really like how they keep track of when they are supposed to come out, and they call us up to let us know it's time to have the service and maintenance checks done. They offer excellent customer service, and it has been an overall excellent experience. I would definitely recommend Hi-Tech Air Conditioning, Inc to anybody who wants to have their HVAC system regularly serviced and maintained!