Skip to main content

With 65%* fewer NOx emissions and high efficiency operation, the L9X1 family delivers the perfect combination of comfort and efficiency all winter long.



Efficient performance

With its innovative design, the L9X1 family reduces NOx emissions by approximately 65%* and has an Annual Fuel Utilization Efficiency (AFUE) of up to 95%. These features help to minimize emissions and monthly utility bills while delivering cozy heat all winter long.

Durable construction

Each L9X1 component is tested relentlessly to help ensure reliable, optimal operation year after year.

Cleaner, healthier indoor air

Add Trane CleanEffects to your system for advanced air filtration that removes more dust, pollen and other irritants from conditioned air for a cleaner, healthier, more comfortable home.


*versus a standard low NOx furnace which operates at 40 ng/J


Get the best of both worlds with a hybrid system

Pair your gas furnace with a heat pump to enjoy the benefits of a hybrid system. Your heat pump primarily heats your home and your furnace steps in when the weather gets too cold. Together, they offer you reliable comfort that could lower your energy costs.

Product Brochure




L9X1A050U3XS 34.5 14.25 28 50,000 95%
L9X1B070U4XS 34.5 17.50 28 70,000 95%
L9X1C100U5XS 34.5 21 28 100,000 95%

Every Trane furnace is packed with high-quality components and features. Each helps ensure that time after time, your unit will provide total comfort your family can rely on.

The L9X1 features:


  • Single-stage operation
  • Less than 2% cabinet air leakage
  • Fully insulated cabinet for quiet operation
  • Stainless steel secondary heat exchanger
  • Durable, heavy gauge cabinet
  • Highly efficient, Constant Torque ECM blower motor
  • Compatibility with both single- and two-stage air conditioning units

Summer Breeze Heating and Air Conditioning

Your Trane Dealer

Call us to get a quote instantly with one of our expert advisors.

Need Help?

Complete Heating & Cooling System from $109.99/mo

Includes: up to 5 ton AC, Cooling Coil, 80% AFUE Furnace and Thermostat. All Repairs & Service - No Charge EVER. No money down with approved credit.

Schedule Service Today
Schedule Your Free Estimate