Lennox Furnace Repair Nationwide

Lennox Furnace Repair in Dallas: What to Know First

Lennox furnace repair in Dallas typically runs $150 – $700, with most common fixes like ignitor replacements and flame sensor cleanings falling in the $150 – $280 range. We’re an independent Lennox service provider, which means we work on every Lennox line still heating homes across Dallas, and we hand you a written price before any tool comes out of the truck. Most Lennox repairs are done in a single visit, and every fix is backed by our 365-Day Done Right Promise in writing.

Call (430) 213-5796

This page is for Dallas homeowners with a Lennox furnace that’s short-cycling, throwing an error code, or simply not lighting. If your heat’s out and you want someone who picks up the phone, call (430) 213-5796 for a free estimate.

Key Takeaways:

• Lennox furnace repairs range from $150 to $700 in Dallas, parts and labor included
• We’re an independent Lennox service provider, not a factory-authorized dealer
• Every repair carries a written 365-day guarantee
• Live person answers the phone 24/7, including weekends and holidays
• Same-day service available for no-heat calls throughout Dallas

How Lennox Products Fail – and How We Fix Them

Lennox builds a solid furnace, but after years of North Texas winters and the occasional ice storm, certain failure patterns show up more often than others. Here’s what we see across Dallas neighborhoods like Lake Highlands, Casa View, and Preston Hollow:

• G20 and G23 series ignitor failures. These older workhorse units, still common in Dallas homes built in the 1990s, use silicon nitride ignitors that eventually crack from years of thermal cycling. The symptom is your furnace blowing cold air while the gas valve never opens. We replace the ignitor with an OEM-spec part that matches the original resistance values, so the control board reads it correctly. Most of these run $150 – $280 including parts.
• EL296V and SLP98V pressure switch trips. High-efficiency Lennox condensers in these models route flue gas through a secondary heat exchanger, which produces condensation that drains through a small tube. In Dallas, dust from construction and dry weather often clogs the drain or the pressure port, causing the switch to trip and the furnace to lock out. The fix is usually a thorough cleaning and verification of proper drainage, not a new switch. We check for clogs before quoting a part replacement.
• ML193 and ML180 draft inducer motor bearing noise. The ML series is Lennox’s value line, and the draft inducer motors on these tend to wear bearings over a decade of use. You’ll hear a whine or rumble from the upper cabinet before the motor actually fails. Replacing the inducer before it seizes prevents a cold night, and we keep common inducer assemblies for the ML line on our trucks.
• Variable-speed blower motor module failures on G61V and EL296V. These furnaces use an electronically commutated motor with a control module mounted on the end. The module tends to fail before the motor itself, often in homes where power surges have hit. The furnace will either run the blower at full speed constantly or not at all. We test the module separately from the motor, and if the module has failed, we quote just that part rather than the full assembly, which can save several hundred dollars.
• Heat exchanger stress on the G51 and G61 lines. Lennox’s mid-efficiency G-series work well, but they don’t tolerate restricted airflow. In Dallas, we see homeowners with partially collapsed flex ducts or heavily clogged filters that starve the furnace, leading to heat exchanger micro-cracks. This is serious, because cracked heat exchangers can release carbon monoxide. We camera-inspect every heat exchanger we suspect, and if it’s cracked, we shut the unit down and walk you through replacement quotes, not repairs, because a band-aid on a cracked exchanger is a safety risk.

Our Lennox Furnace Repair Process

Here’s what happens when you call us for a Lennox furnace repair in Dallas, from the first phone answer to the moment we walk back out your door:

1. 1
   You call (430) 213-5796. A live person answers, day or night. No menu tree. You describe what the furnace is doing, and we schedule a firm arrival window.
2. 2
   The technician arrives on time. Our background-checked, uniformed technician pulls up in the window we gave you. Before touching anything, we ask questions: when did the problem start, what does it sound like, has the filter been changed recently.
3. 3
   Diagnosis with the unit open. We test the ignition sequence, check the gas valve, flame sensor, pressure switches, and blower motor. For Lennox units, we also pull the error code from the control board and verify it against the service manual.
4. 4
   You get the written price. Before any repair starts, we show you the exact dollar figure in writing. This is the Kingswell Way: say the price before the work, no surprises later. If we need an OEM Lennox part, we tell you what it costs and whether a quality aftermarket equivalent will work just as well, so you can choose.
5. 5
   The repair and the test. We make the fix, then run the furnace through at least one full heating cycle. Gas pressure is verified, flame is stable, airflow is measured. If it’s a safety-related issue like a gas valve or heat exchanger concern, we test with a combustion analyzer.
6. 6
   Cleanup and the written guarantee. We clean the work area, walk you through what was done, and hand you the written 365-Day Done Right Promise on paper. If that same repair fails within a year, we return and fix it at no charge, no argument.

What Lennox Furnace Repair Costs in Dallas

Here’s what Dallas homeowners can expect to pay for common Lennox furnace repairs, parts and labor included:

• Ignitor replacement: $150 – $280
• Flame sensor cleaning and adjustment: $90 – $180
• Draft inducer motor replacement: $250 – $450
• Gas valve replacement: $275 – $500
• Blower motor replacement: $300 – $700
• Heat exchanger inspection: $50 – $150 (free if the furnace is under a repair call)

What moves the price is mostly the part: variable-speed DC motors cost more than single-speed AC motors, and OEM Lennox parts carry a premium over quality aftermarket equivalents. We quote both options and explain the warranty difference, so the decision is yours. Call (430) 213-5796 for an exact written quote. Estimates are free.

Why Dallas Homeowners Call Cold Harbour Heating and Air Dallas for Lennox Work

We’re an independent Lennox service provider, not a factory dealer, and that independence works in your favor. We’re not tied to one brand, which means when a Lennox furnace isn’t worth repairing, we’ll tell you honestly and show you replacement options from whichever manufacturer makes sense, whether that’s a new Lennox, a Carrier, or a Trane. We service all three plus six other major residential brands, so the recommendation is based on your home and budget, not a quota.

Victor Mancini grew up in Los Angeles and learned the trade at Los Angeles Trade-Technical College before spending decades turning a wrench on everything from rooftop package units to the kind of old-school Lennox furnaces Dallas homeowners in Oak Cliff still depend on. He runs this business on one simple idea, and it’s printed on every job we do: tell the customer the number before the work starts. Everything else follows from that.

Every repair comes with the 365-Day Done Right Promise in writing. If it fails inside a year, we come back and fix it free. Add to that: a live person answers the phone 24/7, technicians arrive in the window we give you, and the job site is cleaner when we leave than when we arrived. That’s the Kingswell Way, and it’s been the standard here since 2003.

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