Got a new Daikon heat pump installed last year. Install went flawlessly and didn’t have any issues for >12 months. Had an issue during the recent cold snap, and they were quick to come out and service for free. They’re honest when you need something, and don’t push a sale if you don’t. Watkins (and Tony A.) rock. On top of that, they’re one of the few places in the Dayton area that also services my gas boiler system (house from 1950s).
