I posted this review on BBB last year, figured Yelpsters should also know about these guys.
I believe that Sun Devil Heating and Cooling, Inc. sold me a thermostat when nothing was wrong with my unit other than icing over of the coils which I cannot prove now as they took the old thermostat with them. Even if the thermostat was indeed bad and in need of replacement. I cannot recommend this company as it will cost you heavily even for the simplest repair at $59.95 trip charge and $270.00 PER HOUR there after and that's without even considering what the parts will cost you. They will try and justify their charges by comparing themselves to the other bad companies who also overcharge and rip people off. "Our rates aren't as bad as________." My thoughts to that are just because they are not as bad as the worst out there doesn't make them good!
An update from my previous post above.
About 2 weeks later I had the same exact problem, called another A/C guy out and turned out to be as I suspected the coils were iced over. So SDHC took my perfectly good, expensive programmable thermostat, and sold me a cheap one at twice the price and and charged me a ridiculous hourly rate to do it.