ACVM97

Up to 97% AFUE Performance
Stainless-steel tubular primary heat exchanger
Efficient and quiet variable-speed circulator motor.


Liberty 90 downflow gas furnace
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* Complete warranty details available from your local dealer or at libertyhvac.com. To receive the Lifetime Heat Exchanger Limited Warranty, Lifetime 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. Online registration is not required in California or Québec.

** Can no longer be installed in California’s South Coast Air Quality Management District (SCAQMD) on or after October 1, 2019.

Product Features+

  • 97% AFUE
  • Integrated communicating ComfortBridge™ technology
  • Stainless-Steel Tubular Primary Heat Exchange
  • Efficient and Quiet Variable-Speed Circulator Motor
  • Durable silicon nitride igniter
  • Self Calibrating Modulating Gas Valve
  • Quiet, Variable-Speed, Induced-Draft Blower
  • Continuous Air Circulation
  • Self-Diagnostic Control Board
  • Heavy-Gauge Steel Cabinet
  • Thermally Insulated Cabinet

Outstanding Limited Warranty Protection+

This gas furnace has an AFUE rating of up to 97%, which means that up to 97 cents of every $1.00 of heating energy expense warms your home.


In addition to the Lifetime Heat Exchanger Limited Warranty, Lifetime Unit Replacement Limited Warranty (in each case good for as long as you own your home), this furnace also has a 10-Year Parts Limited Warranty* on all functional parts. For a full description of all warranties applicable to this product, please see your local Liberty brand dealer.

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.