The Rheem Super Quiet 80 gas furnace is the quietest mid-efficiency, single-stage gas furnace, claims the manufacturer. The furnace has an AFUE rating of 80 percent and input rates that range from 50,000 to 150,000 Btu. Features include humidifier and electronic air cleaner hookups, solid upper and lower doors, and four-speed blower taps. According to the manufacturer, the unit has a robust ignition system, unique combustion air options, time-tested integrated furnace control, and one of the smallest and most installation- and service-friendly designs in the industry. The unit has a 20-year heat exchanger warranty and a five-year all-parts warranty.

Rheem Air Conditioning Div., P.O. Box 17010, Fort Smith, AR 72917-7010; 479-646-4311; www.rheemac.com.

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