92.1% AFUE, Single Stage, PSC Gas Furnace Easier To Sell 92.1% AFUE, All Models All Positions, California NOx Approved Certified To Leak 2% or Less Of Nominal Air Conditioning CFM Delivered When Pressurized To 1-Inch Water Column with All present Air Inlets, Air Outlets, and Condensate Drain Port(s) Sealed Approved For Twinning Applications (0601714 Through 1202420) with Accessory (Order Separately) Approved For Manufactured Housing/Mobile Home Applications (0401410 Through 1202420) with Accessory (Order Separately) Tougher: Flame Roll-Out Sensors Standard Adjustable Heating Blower Off Delay Factory Set Blower On Delay RPj Aluminized Steel Primary Heat Exchanger Stainless Steel Secondary Heat Exchanger High Temperature Limit Control Prevents Overheating Direct Ignition with Silicon Nitride Ignitor High Quality, Corrosion-Resistant, Prepainted Steel Cabinet Easier To Install and Service: Direct Vent (2-Pipe), Single-Pipe Venting or Ventilated Combustion Air 24 Vac Humidifier Terminal & Electronic Air Cleaner Terminal 35' (889mm) High, For Ease Of Installation Simplified, Factory Installed Internal Condensate Drain System Innovative Knobs For Easy Door Removal and Secure Attachment Factory Shipped For Natural Gas, with Propane Gas Conversion Kits Available Four Position - Upflow/Downflow/Horizontal (Left/Right) Installation At Least Twelve Different Venting Configurations Through The Casing Flue Pipe For Counterflow or Horizontal Applications with Accessory (Order Separately) Concentric Vent Available Self Diagnostics with Super Bright Led Slide Out Heat Exchanger and Blower Assembly Warranty: * 20 Heat Exchanger Limited Warranty 5 Year Parts Limited Warranty - with Timely Registration, An Additional 5 Year Parts Limited Warranty * Applies To original Purchaser/Homeowner, Some Limitations May apply. See Warranty Certificate For Complete Details.