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GR9S80-U

  • Single-Stage, Multi-Speed ECM
  • Multi-Position, Ultra-Low NOx
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Product Specifications
Liberty 80% AFUE Gas Furnaces
lib-20lmtdwarr_heatexch LIB-10YrPrtsLmtdWarr

*Complete warranty information is available from your local dealer or at www.libertyhvac.com. To receive the 10-Year Parts Limited Warranty and 20-Year Heat Exchanger Limited Warranty, online registration must be completed within 60 days of installation. The duration of warranty coverage may depend on the state in which you reside. Some states and provinces do not allow warranty coverage to be conditioned on registration. For a list of states and provinces that do not allow warranty coverage to be conditioned on registration, please visit www.goodmanmfg.com/warranty-information or, to request a paper copy of this information, please call us at 1-855-502-3903. Other limitations and exclusions apply, refer to complete warranty details for full list of limitations and exclusions. 

Product Features+

  • Heavy-duty stainless-steel dual diameter tubular heat exchanger
  • Single-stage gas valve
  • Durable Hot-surface igniter
  • Quiet, modulating draft inducer
  • Self-diagnostic control board

  • Multi-speed ECM blower motor

Outstanding Limited Warranty Protection+

This furnace is covered by what we believe to be one of the best warranties in the indoor home comfort industry. In addition this furnace also has a 10-Year Limited Parts Warranty* on all functional parts. For a full description of all warranties applicable to this product, please review the consumer brochure and warranty certificate by clicking on the specified links.


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.