I had them come out last month to do an audit of my system since my master bedroom was not as cool as the rest of my house. They found out that I had bad air flow since there was not a return in my bedroom and gave me a great price on installing one. Wow, is it much cooler now in my room! They also turned me onto a new thermostat that I can operate from my cell phone. I can now turn my system on or off while away or change the temperature while I am away. This is great because I hate coming home to a hot house when I am too cheap to leave the air on when I go out of town. I am really impressed with Mast Air with their knowledge and how they keep up to date with the newest technology. They have been in business for over 30 years and it really shows.
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