Comfort-Aire’s GTUV Series of two-stage residential gas furnaces are Energy Star compliant at 95 percent AFUE. In capacities from 45,000 to 105,000 Btuh, they feature an integrated two-stage control board and reliable two-stage gas valve. The variable speed ECM blower motor delivers constant airflow through a wide variety of ductwork conditions for even temperatures and improved indoor air quality, the company says.

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