Heil R80ESU0802120A 80% AFUE Ultra-Low NOx Multi-Speed ECM Single Stage Gas Furnace 80,000 BTUH

• 80% AFUE
• Ultra-low NOx emissions - meets the nitrogen oxides (NOx) emission limit of 14 nanograms/joule for the South Coast Air Quality Management District and San Joaquin Valley Air Pollution Control District in California.
• Four--position furnace: Upflow, Horizontal Right, Horizontal Left, Downflow (6 different vent options)
• Versatile venting for tight--fit applications
• Category I venting
• Cabinet air leakage less than 2.0% at 1.0 in. W.C. and cabinet air leakage less than 1.4% at 0.5 in. W.C. when tested in accordance with ASHRAE Standard 193
• Fixed--speeds, constant torque ECM blower motor
• Stainless steel, tubular heat exchanger
• Pilot free, hot surface ignition
• High temperature limit control designed to prevent overheating
• Blocked vent switch