Century’s GL Series of single-stage gas furnaces are Energy Star compliant at 95 percent AFUE. Available in upflow and downflow/horizontal models from 45,000 to 105,000 Btuh, they feature primary and secondary heat exchangers for efficiency and full cabinet insulation. Integrated furnace controls simplify installation. A four-speed, direct drive blower delivers warm air quietly and efficiently, says the company.

Heat Controller Inc., 1900 Wellworth Ave., Jackson, MI 49203; 517-787-2100; 517-787-9341 (fax); www.century-hvac.com