The PG96VTA Multipoise Variable 25-Speed Condensing Gas Furnace features the two-stage gas valve and a variable speed, constant torque (VCT) ECM blower motor. With an Annual Fuel Utilization Efficiency (AFUE) up to 96.5% AFUE, the two-stage gas furnace provides exceptional savings when compared to standard gas furnaces. This Gas Furnace also features 4-way multipoise installation flexibility, and is available in nine model sizes. The PG96VTA can be vented for direct vent/two-pipe, ventilated combustion air, or single-pipe applications. All sizes are design certified in Canada. This furnace is not designed for use in recreation vehicles, manufactured (mobile) homes or out doors.