Frigidaire FG7S (A and K Series), Induced Draft - 80+ AFUE, High efficiency Upflow/Horizontal and Downflow Gas Furnaces. The high efficiency gas furnace may be installed free standing in a utility room, basement, or enclosed in an alcove or closet. The rounded corner jacket provides a pleasing appliance appearance. Design certified by CSA for application in Canada and the United States. 100% fired and tested: All units and each component are tested on the manufacturing line. Best packaging in the industry: Unique corner post design assures product will arrive to the homeowner dent free. Low Boy Height: Easy to apply in low ceiling applications, works well with taller high SEER coils, easier to handle and install. Tubular primary heat exchanger: Heavy gauge aluminized steel heat exchanger assures a long life. 30 second blower delay at start-up: Assures a warm duct temperature at furnace start-up. Adjustable blower off settings (60, 90, 120 and 180 seconds). 30 second post purge: Increases life of heat exchanger. Hot surface igniter: Innovative application of a silicon nitride igniter. Utilizes proven Smartlite technology. Color coded wire harness: Designed to fit the components, all with quick-connect fittings for ease of service and replacement. High static blowers: All models equipped with high static blowers. 90 second cooling cycle blower-off delay (TDR): increases cooling performance when matched with a Nortek coil. Flexible category I venting system: May be vented with dedicated venting system or common vented with other category one appliances. High efficiency blower kits: Maximize efficiencies. On select units, a SEER improvement of up to 1 point is realized. Multi-speed direct drive blower: Designed to give a wide range of cooling capacities. Switches on PCB, provide ultra easy motor speed selection. LP convertible: Simple burner orifice and regulator spring change for ease of convertibility. Diagnostic lights for easy troubleshooting without counting flashes: Dedicated light for flame signal strength and 2 lights in combination to indicate all other fault codes with easy to recognize states without counting flashes. Integrated control board: Incorporates connections for electronic air cleaner and humidifier. Two piece door design: Enhances furnace appearance and uses captured screws to prevent loosing door screws. Blower Compartment: Insulated for ultra quiet operation.