The reintroduced G32V gas furnace is a part of the Dave Lennox Signature™ Collection. This furnace has a variable-speed motor, two-stage operation, and sound-absorbing materials. It has two levels of heat output: high for cold winter days and low for milder days. The low setting is adequate to meet household heating demands about 80 percent of the time, the company states. The low-speed, continuous fan operation slowly circulates air between heating and cooling cycles. The furnace has an efficiency rating of 94 percent. Its secondary heat exchanger allows the furnace to reach efficiency levels by capturing additional heat, the manufacturer says. This unit is an Energy Star product.

Lennox Industries Inc., 2100 Lake Park Blvd., Richardson, TX 75379-9900; 800-953-6669;

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