I highly recommend AirFit and Andrew. I needed a brand new (split system) AC unit installed, as well as new ductwork and returns to a bonus room off the garage. I got a handful of other quotes by just searching Yelp for companies, and then I was personally referred to AirFit and immediately chose them. It is a big purchase but the cost was reasonable and I received professional, friendly service from start to finish, both on the phone and in person, with great communication throughout the process. Everything was on time and as promised. They cleaned up after themselves, and all of the old equipment was hauled away. Smart thermostat included. One day for the install itself, a bit more time on another day for the work in the bonus room. Very happy customer!