Lennox Furnace Repair Nationwide | Dalton Heating & Air Sandy Springs

Lennox Furnace Repair in Sandy Springs: What to Know First

We repair Lennox furnaces throughout Sandy Springs, and most calls get a same-day or next-day visit from a tech who actually knows the equipment. A typical Lennox furnace repair in Sandy Springs runs $150 – $700 depending on what failed. You’ll get the price in writing before any work starts, and the repair is guaranteed in writing for a full year.

Call (478) 400-5908

If you own a Lennox and the heat’s out, you’re likely looking for one thing: someone who will show up, diagnose it straight, and not turn a $250 ignitor into a $900 mystery. That’s the job. Call (478) 400-5908 and you’ll get a live person, not a voicemail tree. Marco and the crew have walked plenty of Sandy Springs homeowners through Lennox failures, from Abernathy Road condos to the two-story colonials off Mount Vernon Highway.

How Lennox Products Fail – and How We Fix Them

Every furnace brand has its own failure patterns. Lennox is no exception. Here are the five we see most often in Sandy Springs homes, and what we actually do about them.

• Elite Series pressure switch faults on two-stage systems. The G61 and later EL296 two-stage furnaces use pressure switches that get flaky when the condensate drain line clogs with the kind of gunk Georgia humidity produces. Symptom: the furnace fires, then locks out with a pressure switch code about 20 minutes into a heat cycle. Fix: clear the trap and line, verify switch operation with a manometer, replace the switch if it’s drifting. We don’t just swap the switch and hope, because half the time the switch is fine and the drain was the culprit.
• SureLight ignitor failures on mid-2010s models. Lennox used a silicon nitride ignitor across the ML195 and SLP98 lines that is durable until it isn’t. When it cracks, the furnace won’t light and you’ll get a lockout. The OEM ignitor runs $80 – $140 and is the right call here; the cheap aftermarket versions burn out in two seasons. If a Sandy Springs homeowner tells us they’ve replaced the ignitor twice in three winters, we check the incoming voltage and the control board before installing the third one.
• Variable-speed blower motor module failures on the Dave Lennox Signature line. The SLP98V and EL296V use an ECM motor where the control module on the end of the motor fails more often than the motor itself. Symptom: fan runs at full blast, won’t modulate, or won’t spin at all. The module costs a fraction of a full motor assembly, and a good tech tests the module before quoting you $900 for a motor you don’t need. We test first, then price it in writing.
• Heat exchanger stress at the crimp folds on older G26/G32 units. These 1990s-era workhorses are still common under Sandy Springs homes that haven’t been renovated in a while. The heat exchanger tends to crack at the lower crimp joints. If it’s cracked on a unit that old, repair rarely makes sense – a new heat exchanger costs more than the furnace is worth. We’ll show you the crack, run the combustion numbers, and lay out repair-versus-replace honestly.
• Gas valve coil degradation on the EL195 and ML193 lines. These single-stage units use a gas valve assembly whose internal coils can fail after years of cycling, usually showing up as intermittent no-heat. We check the thermocouple or flame sensor first, because those produce the same symptom and cost a lot less. If it is the valve, we quote an OEM replacement and a labor figure that doesn’t shift when we show up.

Our Lennox Furnace Repair Process

1. 1
   You call, you get a live person. No answering service queue. We set a specific arrival window and the tech who shows up is uniformed, background-checked, and has your address and the symptom description before he leaves the shop.
2. 2
   Diagnosis, not a guess. The tech verifies what the furnace is actually doing – combustion analysis if heat exchanger questions come up, voltage tests on ignitors and gas valves, static pressure readings on airflow issues. We tell you what failed and why.
3. 3
   Written price, no work started until you approve. The quote lists the part, the labor, and the tax if applicable. That’s the price. It doesn’t move.
4. 4
   The repair. We use OEM Lennox parts where it matters for warranty and longevity – ignitors, gas valves, pressure switches, control boards. Quality aftermarket only where it genuinely performs equal and saves you real money. If the part choice affects warranty, we tell you before we order anything.
5. 5
   Test and verify. We cycle the furnace through full heat-up and cool-down. We check temperature rise, flame signal, and safety lockouts. No “should be fine now” guarantees. The numbers have to be right.
6. 6
   Cleanup and written guarantee. We leave the site the way we found it, broom and all. Then we hand you the guarantee in writing: one full year on the repair, free return if it fails. That’s the 365-Day Done Right Promise, and it’s not an upsell. It comes with every single call.

What Lennox Furnace Repair Costs in Sandy Springs

Most Lennox furnace repairs in Sandy Springs land between $150 and $700. The spread depends on the part and how deep the failure goes.

• Ignitor replacement: $150 – $350
• Flame sensor cleaning or replacement: $80 – $200
• Pressure switch replacement: $200 – $400
• Gas valve replacement: $350 – $700
• Blower motor module replacement: $300 – $650
• Heat exchanger replacement (if viable): $600+ and often not worth it on 15+ year old units

What moves the price is the part itself and whether the system is a single-stage ML series or a variable-speed SLP Signature unit. Bigger, smarter furnaces cost more to repair, same as any brand. You’ll always know the number before we start. Call (478) 400-5908 for an exact quote on your Lennox – estimates are free.

Why Sandy Springs Homeowners Call Dalton Heating & Air Sandy Springs for Lennox Work

We’re not the only HVAC company in Sandy Springs with Lennox on the service board. But we operate under The Garrison Standard, and that changes the actual experience of the call. Price in writing before any work starts. Arrival inside the stated window. Background-checked techs in uniform. A written guarantee on every repair – not a verbal “we’ll take care of you.”

Marco Benitez grew up in East Los Angeles and learned the fundamentals at Los Angeles Trade-Technical College before spending the better part of two decades on systems across the Southeast. His guys have pulled plenty of Lennox repairs in Sandy Springs, including older two-stage units out near Abernathy Road that Georgia summers run ragged. Marco’s habit is to walk you through exactly what failed, why it failed, and what the number is – before a single bolt turns. As he puts it: “Tell me what it’s doing, and I’ll tell you what it costs – in writing, before we start.”

We also service Carrier and Trane on a regular basis, so if you’ve got a mixed-brand house, one call handles all of it. But when it’s a Lennox furnace, that’s what we know cold.

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