Some top-rated central air conditioners as of 2015 include the Maytag M1200 PSA4BI iQ Drive, Dave Lennox Signature XC25, Carrier Infinity 21 24ANB1, Trane XV20i and Amana ASXC18. Other highly rated central air conditioners include the American Standard Platinum ZV, Coleman Echelon Series and Carrier Performance Series.
The Maytag M1200 PSA4BI iQ Drive is ranked as the best reviewed central air conditioner for 2015, according to ConsumerSearch.com. This Energy Star Qualified unit has a Seasonal Energy Efficiency or SEER rating of 25.5. Its noise level is rated at only 59 decibels, which is similar to the noise of a conversation. The unit has a programmable thermostat and comes with a 12-year manufacturer's warranty.
The Dave Lennox Signature XC25 is highly efficient, and its modulating compressor is capable of lowering energy costs by as much as 60 percent. This has earned this unit the Energy Star Most Efficient status.
The Carrier Infinity 21 24ANB1, which is also Energy Star Qualified, has an SEER rating of 21 and a noise level rating of 65 decibels. It is backed by Carrier's 10-year warranty, which covers all of the unit's parts. This unit can be used with an optional thermostat, which allows the user to control it using an Apple or Android smartphone or tablet.