17 years ago, my wife called Air Comfort Heating & Cooling to install a brand new HVAC system in our home. Since then we have them come around every spring to do a check up on the air conditioning unit and in fall to do a check up on the furnace. I don't even have to make an appointment, they call me to let me know it's time for another service and set up the appointment. The price has only gone up a dollar in the past 17 years, so it's a great deal. The technicians are always friendly and clean up after themselves. I highly recommend them!