What igniter fits my Tempstar furnace?

The correct replacement for Tempstar model T8DNL100L20B1 — Furnace 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 T8DNL100L20B1 — Furnace 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 T8DNL100L20B1 — Furnace HSI | Ships Today

Name: Tempstar Hot Surface Igniter for T8DNL100L20B1 — Furnace HSI | Ships Today
Brand: Tempstar
SKU: 1172533-GEN
Price: 36.95 USD
Availability: InStock

SKU: 1172533-GEN Brand: Tempstar

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Overview

This is a genuine OEM hot surface igniter (HSI, part number 1172533) for the Tempstar T8DNL100L20B1 gas furnace. On every call for heat the control board energizes the igniter, which glows red-hot to light the gas as it leaves the valve. Because the ceramic element is brittle and weakens with each heat cycle, the HSI is one of the most commonly replaced furnace parts. When it cracks or can no longer reach ignition temperature, the furnace runs its ignition sequence, fails to light, and locks out — leaving you without heat. This listing covers the OEM igniter; the matched gas valve assembly (1172821, VR8205S snap-mount) is referenced for technicians servicing the complete ignition chain.

Specifications

Spec	Value
Part Number	1172533
Type	Hot Surface Igniter (HSI)
Brand	Tempstar
Voltage	120V
Related Gas Valve	1172821 (VR8205S Snap-Mount)
Application	Gas Furnace Ignition

Compatibility

Direct-fit replacement for the Tempstar T8DNL100L20B1 furnace and shared across ICP-family models (Heil, Comfortmaker, Arcoaire) using the same HSI mounting bracket and connector. Verify the connector style and bracket against your existing igniter before installing.

Installation Guide

Safety First — Shut off gas and power at the furnace, then verify zero voltage with a multimeter.
Access — Remove the burner compartment door to expose the igniter and burners.
Document — Photograph the igniter position and harness routing before removal.
Remove — Unplug the connector and remove the mounting screw, handling the igniter by its ceramic base only — never touch the element.
Install — Seat the new igniter at the correct depth and angle, secure the screw, and reconnect the harness.
Test — Restore gas and power, then watch a full ignition cycle for a clean light and stable flame.

Signs You Need a Replacement

Furnace runs the ignition sequence but never lights.
Igniter does not glow or glows dim and uneven.
Visible cracks, chips, or blistered spots on the element.
Repeated ignition lockouts after multiple failed attempts.

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...

$36.95

Frequently Asked Questions

Does this Igniter fit my Tempstar T8DNL100L20B1 — Furnace HSI | Ships Today?

Yes. This is the factory-specified OEM igniter for the Tempstar T8DNL100L20B1 — Furnace 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 T8DNL100L20B1 — Furnace 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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