I had a Payne PA4A 3-ton 14-SEER A/C and new coil installed for my house about a month ago. It has been working great so far (knocking on wood). It can cool the house about 50% faster than the 15 years-old American Standard 10 SEER unit it replaced. It is also not noisy at all. IMO, it is quieter than the neighbor's Trane 13 SEER unit he had installed last year. However, the size of the PA4A is huge and does not look as pretty as the Trane.