Danny was one of five firms that I interviewed for my central air conditioner replacement. Of the five, he was the only one to make pressure measurements in the plenum, which justified his making the recommendation of enlarging the plenum. Two others made the same recommendation, but only by eyeballing the system. Danny also asked about how we used the system, what our favorite temperatures were, and what the main factor in wanting to update a working system was (in our case, better dehumidification). He recommended at 4-Ton, 16 SEER, single speed compressor, with a variable speed air handler. He went over in detail why we he thought we needed a 16 SEER over a 15 SEER, and why he thought we did not need the expense of a 2-speed or variable speed compressor over a single speed compressor. His quote was the lowest of the five, but I chose him primarily for his ability to communicate and educate, and also for him being the only one who included enlarging the two return ducts, which added 2 hours to the installation. He has 20 years of experience as an installer before recently opening his own business, and his experience and knowledge shows. Of the five people who came by to quote, he was the only one who actually did the installation himself, with his business partner. In my online research, a clear message is that the company that makes the system is not as important as the installation, and Danny did an excellent job installing. It took the two of them ten hours to remove the old condenser and air handler, install the new condenser over a new hurricane-rated pad, put in a new "coffin box" for the air handler to sit on, build a new pair of plenums, take care and time with the duct sealing using multiple layers of fiberglass tape, metal duct tape, and coating it with mastic outer layer. They did a thorough cleanup job, and will return when the temperature is at least 70 degrees to adjust the final level of refrigerant. A lesser company would have added refrigerant at the end of the installation, even though the room temperature was only 64 degrees, which would have resulted in an inaccurate filling. I can not say enough about the professionalism of this company, in addition to their low price, along with the usual guarantees and a year of free service.