What igniter fits my Goodman furnace?

The correct replacement for Goodman model GUX100-5 Furnace — B1401003S 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 Goodman equipment which lists the model number GUX100-5 Furnace — B1401003S.

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.

Is this ignitor compatible with Bryant or Payne systems too?

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

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Goodman

OEM Goodman Spark Ignition Assembly for GUX100-5 Furnace — B1401003S

Name: OEM Goodman Spark Ignition Assembly for GUX100-5 Furnace — B1401003S
Brand: Goodman
SKU: GOODMAN-13387
Price: 73.95 USD
Availability: InStock

SKU: GOODMAN-13387 Brand: Goodman

$73.95 $97.95

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The Goodman B1401003S is a genuine OEM spark ignition assembly for the Goodman GUX100-5 gas furnace. This ignitor produces the high-voltage spark that lights the burner on each heat call. A worn or cracked spark ignitor is one of the most common reasons a furnace clicks but fails to light, so replacing it restores dependable ignition and consistent heat.

Specifications

OEM Part Number: B1401003S
Fits: Goodman GUX100-5 furnace
Type: Direct-spark ignition electrode assembly
Function: Generates ignition spark at burner
Brand: Goodman (genuine OEM)

OEM vs. Generic

The genuine Goodman assembly comes with the correct electrode gap, ceramic insulator, and pre-formed mounting bracket, so it seats in the burner box at the exact spark location the control board expects. Generic ignitors often need gap adjustment and can crack under repeated thermal cycling, causing intermittent no-heat faults. For an ignition-critical part, OEM reliability is worth it.

Installation Difficulty

Moderate (3 of 5). Shut off gas and power, remove the burner-compartment cover, unplug the ignition lead, unbolt the old assembly, and install the new one at the correct gap. A multimeter and basic tools help confirm proper operation. Budget 30–45 minutes; if you're unsure about gas components, use a licensed technician.

Built for the Goodman GUX100-5. Verify your model and serial number before ordering.

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 Goodman Spark Ignition Assem...

$73.95

Frequently Asked Questions

Does this Ignitor fit my Goodman GUX100-5 Furnace — B1401003S?

Yes. This is the factory-specified OEM ignitor for the Goodman GUX100-5 Furnace — B1401003S. 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 ignitor on my Goodman GUX100-5 Furnace — B1401003S?

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 ignitor compatible with Bryant or Payne too?

Many Goodman 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 Goodman ignitor?

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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