The Zone Perfect three-zone control directs temperature levels throughout the house. It gives the homeowner the option of breaking the household into one, two, or three zones, depending on the home's heating and cooling needs. Working with one of the company's thermostats, the control monitors temperature variations and regulates the airflow by zone. According to the manufacturer, when the control works with one of the company's programmable thermostats, homeowners can create up to four separate comfort settings in each zone per day.

Bryant Heating and Cooling, Indianapolis, IN; 800-428-4326; www.bryant.com

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