I called because one of our A/C units was not working and Air Dynamics was able to get a Tech out within a few hours to assess our situation. Within minutes of arrival, it was determined that our compressor shorted and we were facing a very costly repair or replacement. We were given estimates to repair, but both were for 3 ton units. Our system is a 5 ton. Hard to get a real comparison on costs when you tell people you need a new 3 ton unit and its actually 5 ton. As well, there are more components that should have been inspected to make an accurate determination. I learned this through contacting other companies, who asked several questions that Air Dynamics did not. And when we asked about other brands, than Amana, we were unable to get bids for those products, as their system was not updated with that pricing. Based on this experience, I could not recommend this company.