The AO Smith Water Heater Igniter 100108831 is a genuine replacement igniter designed to restore proper burner ignition in select AO Smith gas water heaters.
Full Product Specification:
- Part Type: Hot Surface Igniter
- Part Code: 100108831 / 9002518015
- Use: Gas water heater ignition
Also Compatible With:
- AO Smith Hot Surface Igniter – 9002518015, 100108831
What’s Included
- 1 × AO Smith Igniter (9002518015 / 100108831)(ready to install)
Why Choose Direct Brand?
Trusted Since 2001
Direct Brand has supplied reliable heating and water heater replacement parts across the U.S. for more than two decades.
Fast Processing & Shipping (USA)
We work efficiently to get your order shipped and delivered as soon as possible.
Clear Product Code Guidance
We provide accurate part codes to make confirming compatibility easy.
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Pay with Apple Pay, Google Pay, Mastercard, Visa, American Express, and Pay with Link.
FAQs
Q1: Will this igniter fit my AO Smith water heater?
If your unit lists igniter 100108831 or older reference code 9002518015, this genuine replacement is designed to fit.
Q2: Can I install this igniter myself?
Installation should be completed by a qualified engineer or technician, as ignition components require proper handling and safety precautions.
Q3: What is the difference between 100093872 and 9007600005?
100108831 is the newer, updated code
9002518015 is the older code used in earlier AO Smith units






