When we decided to get a new heating and cooling system, we also decided we wanted to move the furnace from its existing location to one that would allow us to make better use of the space in the basement. This was a big job. Moreover, the existing exposed ductwork in our 100+ year-old home was undersized, and not well-installed. So, we got several quotes, from both large and small companies on getting this work done. Ken's quote was very competitive, but more than that, we liked that we were dealing with the owner of the company, and not some salesperson flunky. He seemed very knowledgeable, and knew about the products he was selling.
The quality of his team's work was excellent; the new ductwork was put in neatly, and the furnace/AC/humidifier, etc. was also installed nicely, with neat and tidy wiring and pipework. The tankless water heater is fantastic; there are lots of complaints on the web about these units not having enough capacity, but Ken didn't oversell us ... he felt we'd be fine with the lowest capacity model, and he was right ... it works beautifully.
They were polite, and responsive and cleaned up nicely when they were done. The only nit was that the thermostat had to be "re-installed" because it wasn't correctly wired the first time. However, Ken responded quickly to my concerns, and the problem was resolved within 24 hours. I would highly recommend Alpha Aire.