Lennox Furnace Repair Nationwide | Dalton Heating & Air Fort Worth

Lennox Furnace Repair in Fort Worth: What to Know First

Lennox furnace repair in Fort Worth runs $150 – $700 for most jobs, and our trucks roll same day or next day for no-heat calls. We’re an independent Lennox service provider – not a dealer warranty shop – so we repair what’s broken, put the price in writing before any work begins, and hand you a one-year written guarantee on the repair itself. If you’ve got a Lennox sitting cold, call (817) 730-5369. A real person answers, 24/7, and we’ll get a technician who knows Lennox systems scheduled to your home.

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How Lennox Products Fail – and How We Fix Them

• G51 and G61 series pressure switch lockouts. These mid-2000s units are all over Fort Worth, and we see the inducer motor pulling weak vacuum as they age. The furnace tries to fire, the pressure switch never closes, and the control board locks out. The fix is usually a new inducer assembly or a rebuilt pressure switch – not a new board – and we test the whole vent path before calling it done.
• ML193 and EL195 rollout trips from dirty burners. Fort Worth’s spring pollen and dust make their way into the burner compartment. The burners clog, flame rollout trips the safety, and the furnace shuts down. We pull the burner assembly, clean the crossover channels, verify gas pressure, and run a full combustion check. This is a maintenance item Lennox’s own troubleshooting guides don’t emphasize for our climate.
• SLO185 and EL296 hot surface ignitor failures. Lennox ignitors are silicon nitride, not metal. They crack invisibly and fail without warning. If your furnace runs the blower but never lights, this is the part to suspect. We keep OEM-grade ignitors on the truck for most Lennox models, so it’s usually fixed in one visit.
• Heat exchanger cracks on 15-plus-year-old units. On any Lennox over 15 years old, a cracked heat exchanger is a real possibility – especially if the filter’s been neglected and airflow dropped. Carbon monoxide starts mixing into the supply air. We test with a combustion analyzer on every repair call and camera the exchanger if readings look off. If we find a crack, we shut the furnace down and give you replacement numbers honestly.
• ECM blower motor failures on EL and SL series. Lennox’s variable-speed and constant-torque blower motors don’t fail often, but when they do, it’s a module failure, not the motor itself. We replace the module or the full motor depending on what the diagnostic readings show and keep aftermarket options that cost less than OEM without giving up performance.

Our Lennox Furnace Repair Process

1. 1
   You call (817) 730-5369. A live person answers – no voicemail queue, no callback window. We schedule a window that works and we hit it.
2. 2
   The tech shows up with Lennox training and the right parts. Our trucks carry OEM and quality aftermarket parts for common Lennox lines: ignitors, pressure switches, flame sensors, gas valves, circuit boards, blower motors. No second-trip parts runs for most repairs.
3. 3
   We diagnose and put the price in writing first. You get a specific price for the exact repair before we touch a screw. No surprise line items, no “it’s worse than we thought” upsell.
4. 4
   We make the repair and verify it holds. We don’t swap the part and leave. We run the furnace through full cycles – ignition, flame sense, blower operation, safety limits – and watch it hit set temperature.
5. 5
   We hand you the guarantee and walk the site clean. Written warranty on every repair, covered for a full year. If the repair fails in that window, we return at no charge. That’s The Garrison Code, and it’s how we’ve operated since 2003.

What Lennox Furnace Repair Costs in Fort Worth

Most Lennox furnace repairs in Fort Worth run $150 – $700 with the part included. Here’s how that breaks down:

• Ignitor replacement: $150 – $250
• Flame sensor cleaning or replacement: $120 – $200
• Pressure switch replacement: $200 – $350
• Gas valve replacement: $300 – $550
• Blower motor or ECM module replacement: $350 – $700
• Heat exchanger replacement: Often $700+ – at that point we’ll give you straight repair-versus-replace numbers

What moves the price is the part, the age of the unit, and whether it’s an OEM or quality aftermarket component. Every quote is written and fixed before work starts. Call (817) 730-5369 for a free estimate on your specific Lennox model.

Why Fort Worth Homeowners Call Dalton Heating & Air Fort Worth for Lennox Work

Most homeowners don’t need a fancy pitch. They need a technician who shows up inside the stated window, tells them what’s wrong in plain language, puts the number in writing, and fixes it right the first time. That’s the standard Marco Benitez built this Fort Worth operation on. We’re factory-trained on Lennox systems, we carry the parts that fail most on Lennox units in Tarrant County homes, and if we ever touch a Lennox we can’t figure out or a part that’s backordered, we’re also trained on Carrier and Trane – so you’re never stuck waiting on one brand’s supply chain. Every repair comes with the 365-Day Done Right Promise. If it’s not right, we return at no charge for a full year.

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