Atlas replaced two HVAC units for me in mid March. The job required a crane to lift the units to the roof, reworking some of the ducts inside the business and tinting of windows in the attic area that were adding heat to our premises. We also needed them to do the job quickly as I did not want to close my business down for very long. Atlas did a superb job and communicated with me clearly throughout the entire process. They finished the job in less than a day. I was very impressed with several things: We had two different AC companies out before and they never figured out the problem we were having with balancing heating and cooling between various rooms in our offices. Atlas figured out the solution and fixed it. Other companies had never noticed that we were gaining heat in an attic area that had windows which let in afternoon sun. Atlas identified this problem and fixed it. While most companies would have charged me for new thermostats because I had signed for them I can see they were looking out for what was best for me by reusing my current thermostats when they realized they were OK to use. They communicated with me clearly and in a timely manner every step of the way. They did the job in less time than estimated and it was super clean when finished. I would certainly use them again. They continue to maintain our units. I highly recommend them.