What igniter fits my Tempstar furnace?

The correct replacement for Tempstar model T8MPL100J20B1 — Silicon Carbide HSI | 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 T8MPL100J20B1 — Silicon Carbide HSI | 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 for T8MPL100J20B1 — Silicon Carbide HSI | Ships Today

Name: Tempstar Hot Surface Igniter for T8MPL100J20B1 — Silicon Carbide HSI | Ships Today
Brand: Tempstar
SKU: 1172533-GEN
Price: 39.00 USD
Availability: InStock

SKU: 1172533-GEN Brand: Tempstar

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Overview

This OEM hot surface igniter (HSI) is the ignition source for the Tempstar T8MPL100J20B1 gas furnace. When the thermostat calls for heat and the gas valve opens, line voltage (120V) energizes the igniter element. The element heats to roughly 2,500°F and ignites the burner gas. A cracked, eroded, or open igniter is one of the most common no-heat failures on this furnace platform. This listing covers OEM igniter assembly 1172533 (IGNITOR HSI) and the associated 1172821 ignition/valve hardware (VR8205S snap-mount) used on this model.

Specifications

Spec	Value
Part Number	1172533 (HSI), 1172821 (valve hardware)
Type	Hot Surface Igniter
Brand	Tempstar (ICP / Heil family)
Voltage	120V
Element	Silicon carbide
Fitment	OEM direct replacement

Compatibility

Engineered for the Tempstar T8MPL100J20B1 modulating gas furnace and shared ICP/Heil/Comfortmaker chassis using the same burner assembly. Always confirm your model and serial against the unit rating plate before ordering.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter and shut off the gas.
Access — Remove the lower service panel to expose the burner box.
Document — Photograph the igniter bracket position and the two-pin connector before disconnecting.
Remove — Unplug the igniter harness, remove the mounting screw, and carefully withdraw the old igniter. Never touch the new element with bare fingers — skin oils cause hot spots and premature failure.
Install — Seat the new igniter so the element sits in the burner flame path, secure the screw, and reconnect the harness per your photo.
Test — Restore gas and power, then watch a full ignition cycle for a clean glow and reliable light-off.

Signs You Need a Replacement

Furnace clicks and the inducer runs but the burners never light (no-heat lockout).
Visible cracks, blistering, or white powdery erosion on the igniter element.
Igniter glows weakly or not at all during the ignition sequence.
Repeated ignition lockouts requiring a power reset to clear.

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 for...

$39.00

Frequently Asked Questions

Does this Igniter fit my Tempstar T8MPL100J20B1 — Silicon Carbide HSI | Ships Today?

Yes. This is the factory-specified OEM igniter for the Tempstar T8MPL100J20B1 — Silicon Carbide HSI | 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 T8MPL100J20B1 — Silicon Carbide HSI | 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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