Lennox Furnace Repair Nationwide | Dalton Heating & Air Santa Clarita

Lennox Furnace Repair in Santa Clarita: What to Know First

We repair Lennox furnaces across Santa Clarita as an independent Lennox service provider, with most calls diagnosed and fixed same-day or next-day. Repairs on Lennox equipment typically run $150 – $700 in this market depending on the failed component, and every job starts with the repair cost written down before any work begins. If you own a Lennox and the heat won’t fire, call (661) 621-3712 and we’ll get a technician to your door inside a two-hour window.

Call (661) 621-3712

This page is written for Santa Clarita homeowners with Lennox furnaces: what fails on these units, what it costs to fix them correctly, and why our approach is built around a written guarantee rather than a handshake. No brand blurb. No filler.

Marco Benitez and our crew have turned wrenches on Lennox equipment in Valencia, Saugus, Canyon Country, Newhall, and Castaic long enough to know which model lines give owners trouble and which ones just need a clean flame sensor and a filter change.

How Lennox Products Fail – and How We Fix Them

Every brand has its signature failures. Lennox furnaces in Santa Clarita have patterns we see on service calls week after week. Here are the five we run into most:

• Ignitor failure on the Elite Series (EL195, EL296). Lennox Elite units use a silicon nitride hot-surface ignitor that gets brittle after years of cycling. In Santa Clarita, where furnaces sit idle through long shoulder seasons and then fire hard on cold December mornings, ignitors crack from thermal shock. The furnace tries to light, the gas valve opens, and nothing happens. We replace the ignitor with the OEM-spec part and confirm the flame sensor reads steady before we leave.
• Pressure switch nuisance trips on the Merit Series (ML193, ML296). The Merit line is Lennox’s budget workhorse, and its pressure switches are particular about airflow. A slightly clogged condensate trap or a flue with partial obstruction will trip the switch intermittently: the furnace runs one night, locks out the next. We don’t just swap the switch. We trace the pressure-circuit cause so a $40 part doesn’t turn into a callback.
• Condensate drain blockages on condensing models (SLP98V, EL296V). High-efficiency Lennox furnaces produce acidic condensate that collects dust and crusts up in the drain lines. Santa Clarita’s dry air means more airborne dust through the return, and that dust ends up in the trap. A plugged trap reads as a pressure fault or a water leak at the base of the cabinet. We flush the trap, clear the line, and test the full drain path.
• Variable-speed blower motor failures on SLP98V and high-end Signature units. Lennox variable-speed ECM motors are quiet and efficient, but the motor control modules don’t love voltage spikes or years of dirty filters. We see failed control modules where the motor itself is fine. The honest fix is to test the module before quoting a full motor replacement, which saves Santa Clarita owners $400 or more on the repair.
• Heat exchanger stress on older G-series units (G26, G40, G60). These units are aging out across Santa Clarita’s older tract homes, and heat exchanger cracks are the failure that matters most. We inspect the exchanger every time we’re in one of these cabinets. If it’s cracked, the repair conversation becomes a replace conversation, and we’ll show you the crack on camera before any quote is written.

Our Lennox Furnace Repair Process

1. 1
   You call (661) 621-3712. A live person answers, not a voicemail queue. We schedule a two-hour arrival window that same day or next day depending on urgency.
2. 2
   Diagnostics first. Our tech runs the Lennox through its startup sequence and tests each component in the chain: ignitor, flame sensor, gas valve, pressure switch, board, and blower. Most Lennox furnaces store fault codes, which we read with the unit’s diagnostic light, then verify with a meter. We also inspect the heat exchanger on every repair call, not just maintenance visits.
3. 3
   Written price before work starts. We itemize the failed part, the labor, and the exact total on paper. You approve it before the first bolt turns. That is The Garrison Standard and it is non-negotiable on every call.
4. 4
   The parts decision. For Lennox equipment under warranty, we use OEM parts and handle the warranty paperwork. For out-of-warranty units, we’ll offer OEM and quality aftermarket options with the realistic difference in lifespan and price, and we tell you which one we’d put in our own house.
5. 5
   The repair and the test. We install the new component, then run the furnace through five or six full heating cycles. We verify temperature rise across the heat exchanger, test for gas leaks at every joint we touched, and confirm the flame is burning clean.
6. 6
   Cleanup and a written guarantee. We leave the mechanical room and the walkway the way we found them. Every repair carries a full-year written guarantee. If the same repair fails inside 365 days, we return at no charge.

What Lennox Furnace Repair Costs in Santa Clarita

Here are the realistic ranges for the Lennox repairs we do most often in Santa Clarita:

• Ignitor replacement: $180 – $320
• Flame sensor cleaning or replacement: $140 – $220
• Pressure switch replacement: $170 – $290
• Gas valve replacement: $350 – $700
• Blower motor or control module: $300 – $700
• Condensate trap flush and line clear: $150 – $250
• Full diagnostic with no repair: $89 – $149 (waived if you approve the repair on the spot)

What moves the price: the model line (Merit parts are cheaper than Signature), whether the unit is still under Lennox’s parts warranty, and how much disassembly the job requires. Every estimate is free and in writing before any work starts. Call (661) 621-3712 for an exact quote on your unit.

Why Santa Clarita Homeowners Call Dalton Heating & Air Santa Clarita for Lennox Work

We are part of a Garrison Partners network that has operated under The Garrison Standard since 2003, and that standard applies to every Lennox furnace we touch. The price is in writing before any work starts, on every single job. The repair is guaranteed in writing for a full year, and if it fails inside that window, we come back at no charge. That is not an upgrade or a package. That is the terms.

Our technicians are background-checked and uniformed, and every one of them is factory-trained to service nine major HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. If you own a Lennox furnace and an older Carrier or Trane system elsewhere in the house, one call covers all of it. Calls are answered by a live human 24 hours a day, seven days a week, including the cold snap in February when every furnace in Valencia decides to quit on the same night. Price on paper before the first bolt turns, that’s how we work.

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