Infinity® 21 Central Air Conditioner 24ANB1 Our Highest Efficiency Wrapped Up in Cool Comfort We’re not the only ones that think highly of this unit. It’s ENERGY STAR® qualified in all sizes and has earned applause from Consumer’s Digest as a Best Buy® winner. It’s easy to understand why. This model is the most efficient air conditioner we make for starters. Add to that the fact that its two-stage compressor can make a real comfort difference when it comes to managing indoor humidity. Two-stage compression lets the system bring the cool when it’s needed but allows it to function mostly in low-stage, where you get the highest efficiency and the best dehumidification due to longer run times. It’s also quieter in low stage. And if you want to really step up in comfort, make sure you combine the 24ANB1 with an Infinity indoor unit featuring a comfort-inducing variable-speed blower motor and manage it all with an Infinity control. It’s the best way to assure you get the highest level of efficiency and cool comfort. Standard Features Up to 21 SEER cooling efficiency Sound: as low as 65 decibels1 Superior humidity and temperature control Two-stage compressor for better comfort and quiet operation Compressor sound blanket and Silencer System II™ design Filter drier system protection from moisture and contaminants WeatherArmor Ultra™ protection Non-ozone depleting Puron® refrigerant 10-year parts limited warranty2 Optional Features Optional labor warranty available3 1 Quietest size within each model group during most common operating condition. 2 To the original owner, when product is used in an owner-occupied residence, a 10-year parts limited warranty upon timely registration of your new equipment. Warranty period is 5 years if not registered within 90 days. Jurisdictions where warranty benefits cannot be conditioned on registration will automatically receive a 10-year parts limited warranty. See warranty certificate for complete details. 3 Ask your Carrier® dealer for details.