Extreme Comfort HAS to be the best heating and cooling company in DFW! Don't look elswhere, trust me, I did a thorough research and met with several companies before them.
I called (and have them quote me) 4 different companies inquiring about a new AC system before contacting Extreme Comfort. The process was overwhelming and they all pretty much try to upsell you on things or equipment you don't really need.
These guys were the best by far. The sales rep was great on helping me understand what I needed and what I didn't. Turns out, the other companies were quoting me from 2 to 10 thousand dollars more than Extreme Comfort. You can't beat these guys pricing, unless you do it yourself.
As far as the installation goes. Their team was great, very explanative on the things they were about to do and the time that the installation would take. We barely noticed them during the 6+ hours that they were here. Once done, they explained very thoroughly what they did and how the unit works. They were also extremely neat, no trace that someone just installed a brand new 4-ton HVAC and furnace.
I am passing along their info to people I know. Great company and great people!