The most quiet and efficient central air conditioner, according to manufacturers' published ratings, has been introduced. The HSX19 is the latest addition to the "Signature" Collection. It has an efficiency rating of 19.20 SEER and a two-stage scroll compressor that runs at low speed up to 80% of the time. The unit includes a patent-pending fan design, compressor with new vibration insulators, a new sound-dampening fan grille, and a "Hushtone" cabinet. It includes the Lennox System Operation Monitor, an on-board diagnostics system. The unit has a 10-year limited warranty on the compressor, and a five-year limited warranty on all remaining covered components.

Lennox Industries Inc., P.O. Box 799900, Dallas, TX 75379-9900.

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