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GM9S80

  • 80% AFUE Performance
  • Single-Stage Multi-Speed Speed motor
Product Specifications
Liberty 80% AFUE Gas Furnaces
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*Complete warranty details available from your local dealer/contractor or at www.libertyhvac.com. To receive the Lifetime Heat Exchanger Limited Warranty, and 10-Year Parts Limited Warranty, online registration must be completed within 60 days of installation. Additional requirements for annual maintenance are required for the Unit Replacement Limited Warranty. Online registration and some of the additional requirements are not required in Florida, California, or Quebec. The duration of warranty coverage in Texas and Florida differs in some cases. Other limitations and exclusions apply, refer to complete warranty details for a full list of limitations and exclusions.

Product Features+

  • Heavy-duty aluminized-steel dual diameter tubular heat exchanger
  • Single-stage gas valve
  • Durable Hot-surface igniter
  • Quiet, single-speed draft induced
  • Self-diagnostic control board
  • Multi-speed ECM blower motor
  • Heavy-gauge steel cabinet with durable baked-enamel finish

Outstanding Limited Warranty Protection+

The heat exchanger on this furnace is covered by a Lifetime Limited Warranty to the original, registered homeowner. This furnace also has a 10-Year Limited Parts Warranty on all functional parts.


This gas furnace has an AFUE rating of 80%, which means that 80 cents of every $1.00 of heating energy expense warms your home.

Product Warranty

Energy Consumption

Before purchasing this appliance, read important information about its estimated annual energy consumption, yearly operating cost, or energy efficiency rating that is available from your retailer.