Lennox Furnace Repair Nationwide

Lennox Furnace Repair in Dallas: What to Know First

Most Lennox furnace repairs in Dallas run between $150 and $700, and we can usually get a technician to your door the same day you call. We’re an independent Lennox service provider, which means we work on your furnace without being tied to any manufacturer’s pricing or parts restrictions. If your Lennox is blowing cold air, short-cycling, or throwing an error code, call (325) 312-3269 and a live person answers, 24/7.

Call (325) 312-3269

This page is for Dallas homeowners who own a Lennox furnace and want to know what’s wrong, what it costs, and who’s coming through the door. Devin Marlowe and our crew have worked on hundreds of Lennox units across the metroplex, from the SLP98V in Lakewood to the G40UH in Mesquite. We’ll tell you plainly what the repair involves and what it’ll cost before we touch a single screw.

How Lennox Products Fail – and How We Fix Them

Lennox builds quality furnaces, but every brand has its patterns. Here are the ones we see most often in Dallas homes, and how we handle them:

• G26 Series ignitor failures. The silicon nitride ignitor on older G26 and G26Q3 units gets brittle after 10 to 15 years of firing cycles. When it cracks, the gas won’t light. We typically replace it with an OEM-quality ignitor in one visit, and we carry them on the truck because this is a cold-weather call we see weekly in Dallas.
• EL296V pressure switch faults. The EL296V is a workhorse, but its pressure switch is sensitive to condensation buildup in the collector box. If you’re getting a “pressure switch open” code and the vents are clear, the switch itself is often reading incorrectly. We test the switch against manifold pressure before condemning it, so you don’t pay for a part you don’t need.
• SLP98 modulating gas valve hiccups. The modulating gas valve on the SLP98 is a beautiful piece of engineering until it isn’t. We see them stick at low fire in Dallas because our winters are mild enough that the furnace rarely runs at full capacity. The fix is often a calibration, not a replacement, which saves you several hundred dollars.
• G40UH heat exchanger stress cracks. The G40UH is an 80% efficiency unit, and after 15 years in Dallas, heat exchangers can develop hairline cracks near the crimp joints. This is a safety issue first and a repair question second. We scope the exchanger with a camera, show you exactly what we see, and give you a straight answer on whether repair or replacement makes sense.
• ML193 blower motor bearing wear. The single-stage ML193 is a common builder-grade unit in Dallas suburbs. Its PSC blower motor runs hot in poorly ventilated closets, and we regularly replace worn bearings or the motor itself in units 8 to 12 years old. We’ll quote you an OEM-equivalent motor and a budget-friendly aftermarket option, with a clear warranty on both.

Our Lennox Furnace Repair Process

1. 1
   You call, a person answers. No phone tree, no voicemail. We ask what the furnace is doing, what the thermostat says, and whether you’ve noticed any unusual smells or sounds. That gives us a head start on the likely culprit.
2. 2
   We send a tech by name and photo. Before we arrive, you’ll know exactly who’s coming, what they look like, and what they’re there to do. That’s the Threshold Verified standard, and it’s how we’ve always worked. When the tech knocks, they show a photo ID badge first.
3. 3
   Diagnostic, with the cover off and the problem found. We test the sequence of operation step by step: thermostat signal, inducer draft, pressure switch, ignitor, flame sensor, gas valve, blower. Most Lennox units throw a diagnostic LED code, and we’ll read it and translate it in plain English.
4. 4
   Written price before any work. Once we know what’s wrong, we write the price down. Parts, labor, everything. You approve it, or we don’t do the work. No surprises at the end. Most ignitor replacements run ol50 to $300, a flame sensor cleaning around ol20, and a blower motor $350 to $700 depending on the series.
5. 5
   The repair, tested, and shown to you. We make the repair, run the furnace through three full heating cycles, and show you the part we swapped if you want to see it. We also check the drain lines, filter, and thermostat since a Lennox furnace that works but is starved for airflow will fail again.
6. 6
   Written guarantee, 365 days. Every repair is covered by the 365-Day Done Right Promise. If it fails within the year, we come back and make it right at no charge. That’s not a policy we’ve ever made an exception to.

What Lennox Furnace Repair Costs in Dallas

Here’s what to expect, parts and labor included:

• Flame sensor cleaning or replacement: $120 – $200
• Ignitor replacement: $150 – $300
• Pressure switch replacement: $180 – $350
• Gas valve calibration or replacement: $250 – $550
• Blower motor or capacitor replacement: $350 – $700
• Diagnostic visit (applied toward repair if you proceed): typically $89

What moves the price is the specific Lennox series you have, the part it needs, and whether OEM or aftermarket makes sense for your machine. High-efficiency modulating units like the SLP98 or EL296V use more specialized components, while the builder-grade ML series parts are generally less expensive. We’ll give you a written, fixed price before any work begins, and a free diagnostic estimate comes with every service call. Call (325) 312-3269 and we’ll talk through what your furnace is doing.

Why Dallas Homeowners Call Brandt HVAC Co Dallas for Lennox Work

Because when your furnace quits on a January night, you want to know who’s coming, what they’ll do, and what it’ll cost. That’s the way we’ve always run jobs. Every technician we send to a Dallas home is background-checked, identity-verified, and introduced to you by name and photo before the visit. They show a badge at the door, and if someone shows up you weren’t told to expect, that’s on us and we make it right. That’s the Threshold standard, and it’s not a marketing line. It’s how we protect our customers.

We also service Carrier and Trane furnaces, so if your neighbor’s unit is a different brand or you have a second system, the same tech can handle both. Our phones are answered by a real person around the clock, and every repair includes a written guarantee. If a fix doesn’t hold, we return free of charge under the 365-Day Done Right Promise. The name Brandt comes from an old word for a firebrand, a fitting name for the work of keeping a Dallas home warm.

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