I've had three old heat pumps replaced by Thornberry Bros over the past 7 years or so, and one emergency/after hours service call. All have been good experiences -- especially the service call ... 5pm on a Friday before a holiday weekend with guests coming over for the night & the AC goes out. The technician showed up about 30 minutes after the call & had the warranty item fixed in another 30 minutes.
I was originally referred to Thornberry Bros by a contractor friend & continue to be happy with their service.