I had another company come out and tell me my entire AC unit needed to be replaced. I called TNA, asked a million questions since I know nothing about A.C. units. All of my questions were answered and I felt much better. The same day The tech George came out and didn't charge me for the visit to look at my unit and inspected my entire system he told me I didn't need to replace everything just the condenser outside. That saved me almost 4k!! When the other company called and tryed to sell me against what I was told again I called TNA and was put at ease. I didn't get the installers names unfortunately but they were qkick to get my system up. The service I received was great and I can't thank you enough for the quick turn around!! As long as I am in Vegas you'll have my business!