We replaced our complete HVAC system and ended up having a bunch of ductwork done also. They stuck to the original bid and did excellent work. David L. and Rick M. explained what they were doing and why they were doing it. They didn't take any shortcuts. The job took 2 1/2 days and they made sure we had cooling for the evenings between since we were in the middle of a number of days above 90 degrees. The company's service personnel are very professional and easy to deal with. We have already recommended them to our neighbors whose houses are the same age and will be needing upgrading shortly.