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GM9C80

  • 80% AFUE Performance
  • Two stage heating with Multi 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, 10-Year Unit Replacement Limited Warranty (in each case good for as long as you own your home) 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+

  • Two stage heating with Multi Speed motor
  • Dual-diameter tubular heat exchanger
  • Multi-speed blower motor
  • Self-diagnostic control board
  • Durable silicon nitride igniter
  • Two-stage gas valve
  • Quiet, multi-speed airflow system
  • Fully insulated heavy-gauge steel cabinet

Outstanding Limited Warranty Protection+

The heat exchanger on this furnace is covered by a Lifetime Limited Warranty to the original, registered homeowner and if it fails during the first 10 years of ownership, we will replace the entire unit. 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.