If you live in North Phoenix, Scottsdale, Cave Creek or Carefree then call Cruz first.
I have a 3-ton Trane A/C unit for our second floor that is original to the home and 20 years old. Every year or two for the past 8 years it gets low on Freon gas and needs a recharge to operate properly.
I called Precision Air to come out and do their advertised tune up that includes up to one pound of Freon with the service call. A few days later their tech showed up but would not add any Freon because the compressor would not turn on. The compressor would not turn on because the unit was low on Freon. It was a catch-22 situation. They didn't try to charge me for this big waste of time but I still had an old unit needing a Freon recharge.
I found the great reviews about Flores A/C here on Yelp. However, they don't usually come up to Cave Creek. They recommended Cruz at CHA A/C. He came the next day.
He went through an entire diagnostic process to ensure that there were no other issues with my old unit, explaining everything that he was doing as he went along.
He 'forced' the compressor to turn on and, sure enough, it was low on Freon. He recharged the unit with 2.3 pounds and it's been cooling our second floor like a new unit all afternoon.
Cruz charged us exactly as he described over the phone. It turned out to be less than what the charges would have been with Precision.
Call Cruz. He's the owner. He's not someone's employee on commission.