The AO Smith – Water Heater Igniter 100110355 / 9005256015 is a genuine replacement igniter designed to restore proper burner ignition in select AO Smith gas water heaters. This direct-fit replacement helps resolve ignition failures and inconsistent hot water performance.
Full Product Specification:
- Part Type: Hot Surface Igniter
- Part Code: 100110355 / 9005256015 ( Older Code )
- Use: Gas water heater ignition
Also Compatible With:
- AO Smith models FPSH-40, FPSH-50, FPST-50
- 183267, 185273-000, (100110355 replaces older code 9005256015)
What’s Included
1 × AO Smith Hot Surface Igniter (100110355 / 9005256015)
Why Choose Direct Brand?
Trusted Since 2001 – Supplying reliable heating and water heater replacement parts across the U.S. for more than two decades.
Same-Day Shipping (USA) –We work efficiently to get your order shipped and delivered as soon as possible.
Clear Product Code Guidance – We list both new and older part codes to make it easier to confirm compatibility before ordering.
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FAQs
Q1: Will this igniter fit my AO Smith water heater?
If your unit lists igniter 100110355 or 9005256015, this genuine replacement is designed to fit.
Q2: Can I install this igniter myself?
It is recommended that installation be performed by a qualified engineer or technician, as improper installation may damage the heater or create safety risks.
Q3: What is the difference between 100110355 and 9005256015?
100110355 is the newer, updated code
9005256015 is the older code
