Heil 1009524 Igniter Reference Guide

How the Igniter Works in Your Furnace

The igniter starts the heating cycle in your gas furnace. When the thermostat signals for heat, the control board sends power to the element.

It heats up to light the gas as the gas valve opens. When working properly, the burners ignite smoothly and supply warmth throughout the home.

If the igniter is cracked or worn, the furnace tries to start but never lights. In some setups, a related flame sensor proves there is a flame, but the igniter must heat up first for combustion to begin.

Understanding the 1009524 Specifications

Checking the physical details of your old part helps you understand its construction and design.

The 1009524 lists specific physical measurements and materials that define how it mounts and connects:

• Length: 1 1/8"
• Material: Silicon Nitride
• Wiring: 31"

Confirming a Match for Your Old Part

When checking a match for an igniter, compare the technical traits to make sure the replacement fits and operates properly.

Silicon nitride igniters last longer than silicon carbide igniters. Always check that the material is silicon carbide or nitride, as listed for your unit.

Make sure the shape and mount fit the same bracket in the burner assembly. Volts must also be the same. Most furnace hot surface igniters run on 120 V, while some use 80 V, and they are not interchangeable.

Signs of Failure and Safe Replacement Steps

A broken igniter is a common reason a furnace fails to produce heat. You might see a visible crack across the element, or the element may fail to glow when the furnace starts its cycle.

Follow these steps to safely handle and inspect the part:

1. Shut off the electrical power at the circuit breaker and test for power to confirm the unit is completely off.
2. Shut off the gas supply valve leading to the furnace.
3. Take a photo of every wire before removing the old part so you have a clear record.
4. Carefully unfasten the mounting bracket without touching the brittle element with your bare fingers.
5. Compare the old part with the specifications and match points to ensure proper fit before mounting.

Read your old part

1. Find the stamped part number on the mounting bracket or ceramic base of your existing part.
2. Check that the stamped number reads 1009524.
3. Inspect the wiring length to see if it matches the 31" measurement.
4. Check the element length to verify it measures 1 1/8".
5. Confirm the mounting bracket shape aligns with your furnace's burner assembly.