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Get your free estimateLennox Furnace Repair in Fort Worth: What to Know First
Meadowsweet Heating and Air Fort Worth repairs Lennox furnaces across Fort Worth, usually with same-day or next-day turnaround on common failures like ignitors, flame sensors, pressure switches, and blower motors. Most Lennox furnace repairs run between $150 and $700, and you’ll get a written price before we touch a single screw, so there’s no guessing when the bill comes. If you’re a Fort Worth homeowner with a Lennox system that won’t heat, short-cycles, or makes a sound you’ve never heard before, call (682) 610-2888 and a live person will answer, day or night.
How Lennox Products Fail – and How We Fix Them
Lennox builds tight, efficient furnaces, but after years of Fort Worth winters and dusty summers, certain parts fail in predictable ways. Here’s what we see most often on Lennox systems in homes from Ridglea Hills to Saginaw:
- Ignitor failure on the G61 and G71 series: These furnaces use a silicon nitride ignitor that gets brittle with age. The symptom is usually a furnace that hums but never lights. We replace it with an OEM ignitor when the warranty still applies, or a durable nitride equivalent when the unit is older than a decade. Either way, the fix is usually done in under an hour.
- Pressure switch fault codes on the Elite series (EL296, EL280): The pressure switch can trip when the exhaust vent gets blocked or the condensate drain clogs. Fort Worth’s clay-heavy soil means homes settle over time, and a shifted PVC vent is more common than people think. We check the vent, the drain line, and the switch itself before replacing anything, because a new switch won’t fix a blocked pipe.
- Short-cycling on the SLP98 modulating line: The SLP98 modulates gas flow based on demand, and a dirty flame sensor causes the burner to cut out prematurely. Lennox flame sensors collect carbon faster than most brands when the air filter isn’t changed often enough. We clean the sensor with a proper abrasive (never just a rag, which leaves residue and repeats the problem) and test cycle times before we leave.
- Blower motor rumble in older G60 and ML180 units: A worn blower motor bearing in a Lennox furnace makes a low, growling sound that gets louder as the run continues. Ignored, it can seize the motor and take out the control board. We replace it with an OEM motor when that’s the honest move, or a high-rated aftermarket motor when the furnace’s age makes OEM cost unreasonable.
- Heat exchanger cracks on Lennox furnaces over 15 years old, especially the G50 and G43 lines: This is the one repairs we won’t sell. A cracked heat exchanger is a genuine safety concern in any brand, and on Lennox systems of that age, replacement is almost always the better call. We’ll show you the crack with a camera and give you a straight answer on repair versus replacement, with real numbers for both.
Styles & brands we work with







Our Lennox Furnace Repair Process
- 1
You call, a live person answers. No voicemail queue, no answering service. You describe the symptom, and we schedule a window that works for your household’s actual routine, not ours.
- 2
We show up in uniform with shoe covers and drop cloths. Before we open the furnace cabinet, the path from your front door to the furnace gets protected. You have kids and pets, so do we.
- 3
We diagnose the system, not just the symptom. Luis Serrano and our techs test the sequence of operation on your Lennox: thermostat call, inducer motor, pressure switch, ignitor, flame sensor, gas valve, blower. We find the actual failed part before quoting you anything.
- 4
You get a written price before any work starts. We tell you what’s failed, what it costs to fix, and what can wait. If the furnace is old enough that repair doesn’t make sense, we say so. No upsells, no bundling a tune-up into an emergency call unless you ask.
- 5
We repair, test, and clean up. The job isn’t done until the furnace runs a full heat cycle without faulting out, and the area around the furnace is cleaner than we found it. You’ll get a photo of the cleanup before the crew rolls the truck out.
- 6
Every job carries the 365-Day Done Right Promise. If a repair doesn’t hold within a year, we make it right. That’s the Cedarwell Care Promise, and it’s backed by the whole Cedarwell family of HVAC companies, established in 2004.
See the difference
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AfterWhat Lennox Furnace Repair Costs in Fort Worth
Furnace repair in Fort Worth generally runs $150 to $700 depending on the part and the furnace model. Ignitor replacements typically land between $150 and $250. Flame sensor cleaning or replacement runs about $125 to $175. Pressure switch work sits between $180 and $320, and a blower motor replacement usually falls between $400 and $700. Heat exchanger repairs land at the top of that range and often push toward replacement instead. What moves the price: whether your Lennox is under warranty, whether it takes OEM or quality aftermarket parts, and how old the unit is. We give you the written number before any work starts, and the estimate itself is free. Call (682) 610-2888 for an exact quote on your Lennox system.
Why Fort Worth Homeowners Call Meadowsweet Heating and Air Fort Worth for Lennox Work
We’re an independent Lennox service provider, not a manufacturer-authorized shop, which means we’re free to tell you the truth about parts and pricing without a corporate playbook. Our techs work on Lennox systems every week in Fort Worth, from the older G-series units in Fairmount bungalows to newer EL296s in Walsh Ranch new builds. We also service Carrier and Trane, so we know how Lennox part prices and failure rates compare to the other big brands, and we use that knowledge to keep your repair honest. What you’ll notice most is how we work in your home: shoe covers and drop cloths on every visit, tools kept quiet when a baby’s napping, and a photo of the finished cleanup sent before we leave. The 365-Day Done Right Promise backs all of it. If it isn’t done right, we make it right.
FAQs
No. As an independent Lennox service provider, our repairs use OEM parts when your system is under warranty and quality aftermarket parts when it isn’t. Your manufacturer’s warranty stays intact because we follow Lennox’s service specs without compromise. Call (682) 610-2888 and we’ll confirm your warranty status during the estimate.
Most Lennox furnace repairs in Fort Worth happen same-day or next-day, and because a live person answers our phones 24/7, you’ll know your window before you hang up. If you’re without heat on a cold night, we treat it like the real emergency it is and prioritize your call.
The honest dividing line is usually 15 years and a cracked heat exchanger. If your Lennox is under 12 years old and the repair is under $500, repair almost always makes sense. Over 15 years old with a heat exchanger crack, and replacement starts making more sense than a $700 patch. We’ll show you the numbers for both and let you decide without pressure.
We stock common Lennox ignitors, flame sensors, pressure switches, and blower motors in our Fort Worth trucks, so most repairs finish in one visit. Specialty Lennox parts, like certain modulating gas valves on the SLP98, sometimes require a same-day order from our local supply house. You’ll know the timeline before we start.
Every Lennox furnace repair we do carries the 365-Day Done Right Promise. If a part we installed fails within a year, we replace it and redo the repair at no charge. No fine print, no runarounds. Call (682) 610-2888 and we’ll make it right.
Written by Luis Serrano, Owner, Meadowsweet Heating and Air Fort Worth, serving Fort Worth and nearby areas.