The HSX15 air conditioner is part of the Signature™ Collection. The unit, engineered with Silentcomfort™ technology, contains a patent-pending fan blade and a Hushtone™ cabinet, which features an insulated compressor compartment. The air conditioner can achieve up to 15.75 SEER, says the company. The A/C unit uses R-410A. Features include a durable, corrosion-resistant, heavy-gauge, galvanized steel cabinet; a scroll compressor; and a coil guard. This Energy Star® product has a 10-year limited warranty on the compressor and five-year limited warranty on all remaining covered components.