What igniter fits my Lennox furnace?

The correct replacement for Lennox model OEM Lennox Spark Igniter Electrode — 43G62 is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Lennox equipment which lists the model number OEM Lennox Spark Igniter Electrode — 43G62.

My furnace will not ignite. What part is bad?

A furnace that will not ignite after the draft inducer runs typically has a failed igniter. The hot surface igniter should glow bright orange within 60 seconds. If it does not glow at all, it is cracked or burned out. If it glows weakly, it is degrading and should be replaced preventively. Average lifespan: 3 to 7 years.

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Lennox

OEM Lennox Spark Igniter Electrode — 43G62

Name: OEM Lennox Spark Igniter Electrode — 43G62
Brand: Lennox
SKU: LNX-43G62
Price: 39.95 USD
Availability: InStock

SKU: LNX-43G62 Brand: Lennox

$39.95 $54.95

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The genuine OEM Lennox 43G62 spark igniter electrode generates the high-voltage spark that lights the burners on your Lennox furnace or ignition-based equipment. Positioned precisely at the burner, the electrode arcs to ground to ignite the gas-air mixture at the start of each heating cycle. Correct gap and placement are essential for fast, dependable light-off.

When a spark igniter degrades, you'll typically notice delayed ignition, repeated clicking without the burners catching, rough or noisy light-off, or complete ignition failure that locks out the furnace. Cracked ceramic insulators, an eroded electrode tip, or a shifted spark gap are the usual culprits.

Installing the OEM 43G62 guarantees the exact electrode geometry, ceramic insulation, and spark gap your Lennox system was engineered for. Generic igniters often sit at the wrong angle or gap, causing weak sparks, delayed ignition that can produce a rollout, and premature failure. This factory-spec part restores crisp, reliable ignition and safe burner startup.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

OEM Lennox Spark Igniter Electro...

$39.95

Frequently Asked Questions

Does this Igniter fit my Lennox OEM Lennox Spark Igniter Electrode — 43G62?

Yes. This is the factory-specified OEM igniter for the Lennox OEM Lennox Spark Igniter Electrode — 43G62. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the igniter on my Lennox OEM Lennox Spark Igniter Electrode — 43G62?

Difficulty: Medium (20–30 min)
Step 1: Turn off power and gas. Step 2: Open furnace panel. Step 3: Locate igniter near burners. Step 4: Disconnect two-wire plug. Step 5: Remove mounting screw. Step 6: Install new igniter — do NOT touch element with fingers. Step 7: Reconnect, close panel, restore power/gas.

My furnace won’t ignite. What part is bad?

Furnace won’t ignite after the draft inducer runs = failed igniter. The hot surface igniter should glow bright orange within 60 seconds. No glow = cracked/burned out. Weak glow = degrading. Average lifespan: 3–7 years. Replacement: $15–$40 DIY.

Is this igniter compatible with Bryant or Payne too?

Many Lennox parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Lennox igniter?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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OEM Lennox Spark Igniter Electrode — 43G62

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Return Policy

Frequently Asked Questions