What igniter fits my Tempstar furnace?

The correct replacement for Tempstar model T8MPT125J20A1 — Silicon Nitride Ignitor | Ships Today 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 Tempstar equipment which lists the model number T8MPT125J20A1 — Silicon Nitride Ignitor | Ships Today.

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 igniter compatible with Bryant or Payne systems too?

Many Tempstar 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.

Tempstar

Tempstar Hot Surface Igniter/Sensor for T8MPT125J20A1 — Silicon Nitride Ignitor | Ships Today

Name: Tempstar Hot Surface Igniter/Sensor for T8MPT125J20A1 — Silicon Nitride Ignitor | Ships Today
Brand: Tempstar
SKU: 1009524-GEN
Price: 34.00 USD
Availability: InStock

SKU: 1009524-GEN Brand: Tempstar

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Overview

This genuine OEM hot surface igniter/sensor (part number 1009524) provides reliable ignition for the Tempstar T8MPT125J20A1 gas furnace. When the control board calls for heat, the igniter heats to a high surface temperature to light the burner gas, and in this combined igniter/sensor design it also confirms flame presence for the safety circuit. It is one of the most frequently replaced furnace parts because the heating element becomes brittle and cracks with thousands of ignition cycles. Typical failure symptoms include no heat with the blower running, repeated ignition lockouts, an igniter that glows but never lights the burner, or an igniter that no longer glows at all. Handle the new igniter only by its ceramic base — skin oils on the element shorten its life.

Specifications

Spec	Value
Part Number	1009524
Type	Hot Surface Igniter / Sensor
Brand	Tempstar (ICP / Heil)
Element	Silicon Nitride
Function	Ignition + Flame Sensing
Fitment	OEM Replacement

Compatibility

Designed for the Tempstar T8MPT125J20A1 gas furnace and compatible ICP-family units (Tempstar, Heil, Comfortmaker) using a silicon nitride hot surface igniter/sensor. Match the mounting bracket and connector to your original before installing.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter and shut off the gas supply.
Access — Remove the burner-compartment service panel.
Document — Photograph the igniter position, bracket orientation, and wire routing.
Remove — Unplug the igniter connector, remove the mounting screw, and carefully withdraw the old igniter without striking the element.
Install — Mount the new igniter by its ceramic base only, secure the bracket, and reconnect the harness per your photo.
Test — Restore power and gas, then run a heat cycle and confirm the igniter glows, lights the burner, and the flame stays lit.

Signs You Need a Replacement

No heat while the blower still runs
Igniter glows but the burner never lights
Igniter does not glow at all
Repeated ignition lockouts or short-cycling on startup

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.

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

Tempstar Hot Surface Igniter/Sen...

$34.00

Frequently Asked Questions

Does this Igniter fit my Tempstar T8MPT125J20A1 — Silicon Nitride Ignitor | Ships Today?

Yes. This is the factory-specified OEM igniter for the Tempstar T8MPT125J20A1 — Silicon Nitride Ignitor | Ships Today. 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 Tempstar T8MPT125J20A1 — Silicon Nitride Ignitor | Ships Today?

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 Tempstar 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 Tempstar 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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