

So what breaks most often? According to our survey, the evaporator coil, which resides in the indoor unit, is the part most likely to break, affecting 5 percent of owners, on average.

The other 12 brands earned a rating of Good (average) for owner satisfaction. Armstrong and Ducane earned Very Good satisfaction ratings, as did Rheem and Ruud. Five brands got a top rating of Excellent for satisfaction: Trane, American Standard, Bryant, Lennox, and Carrier. Our owner satisfaction rating is based on the percentage of members who say they’re extremely likely to recommend their central air brand. People should take this into account if they’re considering buying a central AC system from one of these brands. In this survey, no brand earned a Poor reliability rating, but Coleman, Goodman, Luxaire, and York received a subpar Fair rating. Seven other brands earned a favorable rating of Very Good and seven brands earned a rating of Good, which is just average. In addition to Trane, Armstrong and Ducane earned an Excellent reliability rating. To calculate predicted reliability, we used our survey data to estimate how likely a system is to break or cease to sufficiently cool a home by the end of the eighth year. Of the 21 brands captured in our survey only one, Trane, earned an Excellent mark on both measures. Using the information provided by our members, we calculated ratings for both predicted reliability and owner satisfaction. Instead, we estimate the reliability of major brands on the market by asking our members about their experiences with the central AC systems they purchased and had installed. Because there are so many variables, including a home’s size and design, how the system is installed, and construction of the ductwork, Consumer Reports doesn’t test central air conditioning systems. Installing or replacing a central air conditioning system is one of a homeowner’s biggest expenses, so you’ll want to get it right. Of these, 15 percent had purchased a central AC system for the first time. In fact, 14 percent of the members we surveyed about their AC systems in 2020 said they used theirs much more than they had the previous summer and well over 80 percent said they used theirs just as much or slightly more. And for those without central AC, it may be time to think about getting a system set up. As summer approaches, now is the time to make sure your AC system is in good repair, so that it’s able to keep you cool through the coming months.
