What igniter fits my Tempstar furnace?

The correct replacement for Tempstar model T8MPV125J20B1 — HSI Furnace 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 T8MPV125J20B1 — HSI Furnace 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 for T8MPV125J20B1 — HSI Furnace Ignitor | Ships Today

Name: Tempstar Hot Surface Igniter for T8MPV125J20B1 — HSI Furnace Ignitor | Ships Today
Brand: Tempstar
SKU: 1172533-GEN
Price: 39.00 USD
Availability: InStock

SKU: 1172533-GEN Brand: Tempstar

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Overview

This genuine OEM hot surface igniter (HSI, part number 1172533) is the ignition source for the Tempstar T8MPV125J20B1 two-stage gas furnace. On a call for heat the control board energizes the igniter; it glows to roughly 1,800–2,500°F and ignites the gas as it leaves the burners. This model uses the igniter together with the OEM gas valve (1172822, VR8205Q two-stage hot-surface valve) to deliver staged heating. Igniters are the most common furnace failure point: the brittle silicon-carbide element cracks from thermal cycling, contamination, or rough handling. A cracked or open igniter produces no glow, leaving the furnace to lock out after several failed trials for ignition.

Specifications

Spec	Value
Part Number	1172533 (HSI)
Companion Part	1172822 — Gas Valve, 2-Stage HW VR8205Q
Type	Hot Surface Igniter
Brand	Tempstar (ICP / Heil)
Application	Gas Furnace Ignition
Stages	2-Stage Heat

Compatibility

Built for the Tempstar T8MPV125J20B1 furnace and shared across ICP-family two-stage furnaces (Heil, Comfortmaker, Arcoaire, KeepRite). Verify the igniter part number and connector style against your existing unit before installing.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker and verify zero voltage with a multimeter before touching wiring.
Access — Remove the burner-compartment service panel.
Document — Photograph the igniter mounting and the wire harness routing before disconnecting.
Remove — Unplug the igniter connector and remove the mounting screw(s); handle the old igniter by its ceramic base only, never the element.
Install — Mount the new igniter so the element sits correctly in the burner flame path, never touching it with bare fingers, then reconnect the harness.
Test — Restore power and confirm the igniter glows and the burners light cleanly on a call for heat.

Signs You Need a Replacement

Igniter does not glow on a heat call
Furnace locks out after repeated ignition attempts
Visible crack, blistering, or breakage in the element
Open circuit / no continuity when checked with a meter

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 T8MPV125J20B1 — HSI Furnace Ignitor | Ships Today?

Yes. This is the factory-specified OEM igniter for the Tempstar T8MPV125J20B1 — HSI Furnace 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 T8MPV125J20B1 — HSI Furnace 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.

Menu