The HL2 Series low-intensity infrared tube heaters have patented two-stage technology. The tube heaters can provide a minimum of 12-percent fuel savings over single-stage heaters, returning the difference in cost in as little as one season, states the manufacturer. Features include highly emissive, coated, aluminized steel radiant tubes; interlocking swaged tube design; polished aluminum reflectors; self-diagnostic controls; and 24-volt thermostat operation.

Detroit Radiant Products, 21400 Hoover Rd., Warren, MI 48089; 800-222-1100;;

eProduct #182