I have used Ardmore Fresh Air for about a decade for maintenance and two installations. Bob, and his son Rob, as well as the office are always ready to help. Trustworthy, reliable and responsive. They can maintain and repair any type of HVAC system, At first I had them maintain my Rheem systems; and more recently I had those 23 year old systems replaced by new Ruud system and installed by Ardmore.
I highly recommend them.