The two-stage, high-efficiency Heil QuietComfort IIS 90 gas furnace operates in a low-profile 90 percent-efficiency model. The gas furnace features an internal condensate drain system already installed. The trap is located in the blower compartment and the condensate drain can be routed out either the left or right side of the furnace. Most hose and clamp connections are now pre-made by the factory, reducing the amount of time needed to install the furnace. Natural-gas models are available ranging from 50,000 Btuh through 125,000 Btuh with liquid propane gas-conversion kits.

International Comfort Products, 650 Heil Quaker Ave., P.O. Box 128, Lewisburg, TN 37091; (931) 270-4222; fax (931) 270-4166; www.heil-hvac.com.