The PowerSaver® HS21 air conditioner and HP21 heat pump have two-speed operation. Part of the new Dave Lennox Signature™ collection, the HS21 offers SEERs ranging from 11.40 to 15.75, while the HP21 offers SEER from 12 to 16.15. A heavy-gauge, noncorrosive, PVC-coated steel wire protects the condenser coil and is designed so debris falls away from the copper tubing/aluminum fin coil. In addition, the units’ enhanced coil guard and outdoor coil contribute to their efficiency, says the company.

Lennox International, P.O. Box 799900, Dallas, TX 75379-9900; 972-497-5000; (website).

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