These York® compact units employ induced combustion, reliable hot surface ignition, and high heat transfer aluminized tubular heat exchangers. The units are factory shipped for installation in upflow applications and can be converted for horizontal or downflow applications. These furnaces are designed for residential installation in a basement, closet, alcove, attic, recreation room or garage and are also ideal for commercial applications. All units are factory assembled, wired and tested to ensure safe, dependable and economical installation and operation. These units are Category I listed and can be common vented with another gas appliance as allowed by the National Fuel Gas Code.