Lennox Furnace Repair Nationwide | Dalton Heating & Air Dallas

Lennox Furnace Repair in Dallas: What to Know First

Lennox furnace repair in Dallas typically costs $150 – $700 depending on the failed part, and most jobs are completed same day or next day. We’re an independent Lennox service provider, which means we diagnose and repair your furnace using the same factory service procedures as a dealer, but with written pricing before any work begins. This page is for Dallas homeowners whose Lennox furnace quit, is short cycling, or is throwing an error code, and who want a straight answer on what it costs to fix. Call (254) 280-5320 for a free estimate.

Call (254) 280-5320

If your Lennox is down and the house is cold, call us at (254) 280-5320. A real person answers, 24/7, and we’ll get a background-checked, uniformed technician to your Dallas home inside the stated window.

How Lennox Products Fail – and How We Fix Them

Every brand has its patterns. Here are the Lennox-specific failures we see most in Dallas, the reason they happen, and how we address them.

• EL296V and EL296E two-stage furnaces: pressure switch trips with no blockage. Dallas dust is fine and gets past standard filters, coating the inducer wheel and reducing airflow through the pressure switch port. The furnace reads it as a venting problem and locks out. We clean the inducer assembly and replace the pressure switch if the diaphragm has stretched. It’s a $180 – $320 fix versus the $1,200+ some companies quote for a new inducer motor.
• SLP98V modulating furnaces: error code 292 (blower motor communication fault). The variable-speed ECM blower motor loses communication with the control board, usually because of voltage drop at a tired capacitor or a loose harness pin at the motor plug. Lennox dealers often replace the entire motor assembly. We check the harness first, then the capacitor, then the motor. That diagnostic order saves Dallas owners hundreds.
• ML193 and ML180 entry-level units: heat exchanger rust-through at the crimp rings. These are the most common Lennox furnaces in older Dallas homes built before 2010. The heat exchanger cracks at the crimp ring seams after 12 – 15 years of thermal cycling. This is a safety issue, not just a repair. If the crack is confirmed, we don’t patch it. We quote a replacement and document the failure for your insurance if applicable.
• G50 and G60 legacy furnaces: intermittent ignition due to a cracked ignitor. The silicon nitride ignitor in these units gets brittle with age. A hairline crack means it sometimes lights and sometimes doesn’t. We replace it with an OEM-spec nitride ignitor, not the cheaper carbide version that fails in two seasons. The part costs about $40; the job runs $150 – $250 total.
• All Lennox models: failed gas valve solenoids after a power surge. Dallas thunderstorms are hard on furnace electronics. The Honeywell gas valves used in Lennox furnaces have a solenoid coil that burns out when lightning takes a nearby line. If your furnace clicks but won’t open the gas, this is likely it. We test the valve with a manometer and replace it with an OEM valve. $280 – $450 depending on the model.

Our Lennox Furnace Repair Process

Here’s how a Lennox repair call goes with us, from first call to final walk-through.

1. 1
   You call (254) 280-5320 and describe the symptom. You talk to a live person, not a voicemail. We ask what the furnace is doing, how old it is, and whether you have the model number handy.
2. 2
   We arrive inside the stated window. Our techs are background-checked, uniformed, and driving marked Dalton trucks. You know who’s coming before they get there.
3. 3
   Diagnosis with a written price before any work starts. We test the ignitor, flame sensor, gas pressure, inducer draft, and control board. Then we give you the repair price in writing, flat, no surprises. If you say no, you owe nothing for the diagnosis.
4. 4
   We make the repair with the right parts. Where it matters for safety and longevity, we use Lennox OEM parts or quality aftermarket equivalents that meet or exceed spec. We tell you which one we’re using and why before we install it.
5. 5
   We test the full sequence of operation. Not just “it fires up.” We verify gas pressure at the manifold, temperature rise across the heat exchanger, carbon monoxide readings, and that the burners light clean every cycle.
6. 6
   You get a written guarantee. Every repair is guaranteed in writing for a full year. If it fails in that window, we come back and make it right at no charge.

What Lennox Furnace Repair Costs in Dallas

Here are realistic price ranges for the Lennox jobs we handle most in Dallas. These are flat, written prices, not hourly estimates that drift upward.

What moves the price is the part itself and whether it’s OEM or quality aftermarket. A two-stage Lennox gas valve costs more than a single-stage. An ECM blower motor is pricier than a standard PSC motor. You’ll know the number before we touch anything. Call (254) 280-5320 for an exact quote on your Lennox furnace, free.

Why Dallas Homeowners Call Dalton Heating & Air Dallas for Lennox Work

We’ve been doing this under The Garrison Standard since 2003. That means every job, including Lennox furnace repair in Dallas, follows The Garrison Code: arrive on time, put the price in writing before starting, do the job by the book, leave the site clean, and stand behind the work for a full year. If our repair doesn’t hold, we return at no charge. That’s the 365-Day Done Right Promise, and it’s written on every invoice.

Marco Benitez, our owner and lead technician, has spent two decades turning wrenches on residential and light-commercial systems across Texas. He trained at Los Angeles Trade-Technical College and has been working Dallas long enough to know that a Lennox EL296 in Oak Cliff behaves a little differently than one in a North Dallas home with a media filter. His crew services all nine major residential brands, including Carrier and Trane, so if your Lennox has a failure and you decide it’s time to compare a replacement from another brand, we can give you a real loaded number for that too.

Tell me what’s wrong, I’ll tell you what it costs in writing, before we start.

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