As an attorney and someone not necessarily easy to please, I have been with Diamond Quality Services for several years now and I am consistently impressed with their service quality and integrity. Scott and the team are excellent in all respects and a Bryant zoned system (Bryant Evolution Variable and 2 Stage Furnace) with motorized dampers has been awesome. We replaced two old units that were not holding freon, running constantly and leaving hot spots, especially in the game room over our garage. The zoned system has changed all of that and now we can control not only the temperature in separate areas of the house but also the overall relative humidity. Night and day in terms of comfort and the wireless thermostat with smart phone control from anywhere is really nice - and I would not have installed a zoned system without using Scott and his team at Diamond Quality Services. Highly recommended.
UPDATED 5/14/2016: I had a relatively small element of the water cutoff safety piece of the equipment malfunction (not Bryant system or Diamond's fault) and Scott and his team paid my out of pocket costs and honored the warranty on their end. Again, outstanding service with integrity after the sale.
UPDATED 6/7/2017: Continue to get excellent service, highly recommend the Bryant system and Diamond Quality Services.
UPDATED 12/10/2018: Continued great service technicians. Still highly recommended!
UPDATED 12/21/2020: Service technician was thorough and outstanding, still very highly recommended. See above. Hard to find a company like this.