They had installed the AC unit for the previous owner of my house, and I've been continuing to use them for service.
It can be hard to get an appointment at the beginning of the warm season, but that's true for every AC repair shop.
Their techs are knowledgeable and courteous. I've had them out a few times for service and always felt I've been treated fairly, never felt ripped off.
There isn't really much else to say except that it's refreshing to feel like a service business treats you well. I'd recommend them to anyone.