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Trane Gas furnace L9X1 95 Single-Stage Ultra-Low NOx Gas Furnace

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Trane Furnaces Gas furnace Repair, maintenance, and replacement planning
Trane L9X1 95 Single-Stage Ultra-Low NOx Gas Furnace product image

Technical Specifications

Product Specs

  • Efficiency family: 95 single-stage ultra-low NOx gas furnace
  • Heating and airflow: single-stage operation with constant-torque ECM blower motor
  • Listed model family: L9X1A050U3VS, L9X1B070U4VS, and L9X1C100U5VS
  • Published cabinet dimensions: 34.5 in. height, 28 in. depth, and model-dependent width
  • Core components: less than 2% cabinet air leakage, fully insulated cabinet, stainless steel secondary heat exchanger, heavy-gauge cabinet, and compatibility with single- and two-stage air conditioning units
  • Former product name: L9X1 Ultra-Low NOx Gas Furnace
  • Brand: Trane
  • Model or series: L9X1 95 Single-Stage Ultra-Low NOx Gas Furnace
  • Equipment type: Gas furnace
  • Product group: Furnaces
  • System role: Forced-air heating appliance for a ducted HVAC system
  • Application: Residential, light-commercial, or managed-property comfort applications
  • Compatibility check: Verify fuel type, venting, electrical requirements, capacity, controls, and installation clearances.
  • Verified source: trane.com

Useful troubleshooting details

  • Confirm the exact L9X1 model number, serial number, gas type, venting, filter size, and thermostat before scheduling.
  • Share no-heat, ignition, lockout, flame, blower, short-cycling, and error-code details.
  • For replacement planning, identify whether the request involves ultra-low NOx requirements, furnace replacement, or heat-pump conversion planning.

Service planning

How GreenFlow handles L9X1 95 Single-Stage Ultra-Low NOx Gas Furnace requests

1

Identify the equipment

Confirm the model or series name, serial number if available, photos, and whether the unit is roof, exterior, basement, or mechanical-room equipment.

2

Describe the service issue

Share no heat, no cooling, weak airflow, error codes, alarms, leaks, noise, control problems, or comfort complaints.

3

Review access and history

Include access notes, tenant or business-hour constraints, filter status, recent repairs, and maintenance records when available.

4

Plan the next step

GreenFlow can route the request for diagnostics, repair planning, maintenance, replacement scope, or related system upgrades.

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Neal V.

In an industry that often fraught with contractors taking advantage of homeowners, Andrey was honest with his assessment and willing to install a product acquired elsewhere (most want that margin themselves), patiently answered my questions (I’m an engineer so like to understand what’s happening), and proactively offered practical...

John F.

I needed 2 new AC units and decided to go with high efficiency heat pumps. I chose Greenflow because of the equipment they offered, and the price (2nd lowest quote and much cheaper than the average of all quote we received). Their technicians were very detail oriented and...

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Dev W.

I had a breakdown of my cooling system and Hanna at Green Flow responded to my request right away. They scheduled me same day. The team at Green Flow was easy to communicate with over phone and text. They kept me updated on delays on arrival of the...

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