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Hot Surface Ignition
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9005958005 has been discontinued
Discontinued March 21, 2017
This product was discontinued because the part number was changed by the manufacturer. No modifications were made to the replacement product.
Direct Replacement:
Hot Surface Ignition, 100110771
Brand:
AO Smith
SKU:100110771
(38)
Order by today, receive 16 by Tuesday
VIEW REPLACEMENT
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Description

A. O. Smith 9005958005 Hot Surface Ignition is an OEM hot surface ignitor for select A. O. Smith residential gas water heaters, used to light the main burner during the heating cycle.

Key Features:
  • OEM hot surface ignition assembly
  • Factory part number 9005958005
  • Designed for model-specific replacement as listed in A. O. Smith parts literature

Compatibility & Applications:
  • For A. O. Smith gas water heaters that specify 9005958005 in the official parts list
  • Ignites the main burner on compatible natural gas models

Installation & Operation Notes:
  • Follow the appliance service manual for power and gas shutoff, ignitor removal, wiring connection, and post-install checks
  • Handle the ignitor carefully, avoid contamination of the element, and verify ignition sequence after installation

Maintenance & Troubleshooting:
  • Use the unit's diagnostics to confirm the ignitor is the failed component before replacement
  • After install, verify flame establishment and control response per the manual

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Product Reviews

4.92 out of 38 reviews
97% would recommend this product
4.92
out of 38 Reviews
97% would recommend this product
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Most Liked Positive Review

Exactly what I needed

When I called SupplyHouse, I thought I knew the part number I needed. The very helpful person at SupplyHouse double checked and told me I actually had the wrong part. She ordered the right part, and it shipped the next day as promised. Delivery got delayed, but the problem happened on UPS's end - no fault of SupplyHouse. I found a place locally that had them, but the same part was going to cost almost $50 more, so I waited for UPS to bring this one. It was exactly what we needed, we have hot water again, and I've saved SupplyHouse.com in my favorites. If I need anything like this again, I'm checking here first!
VS

Most Liked Negative Review

Very disappointed

This igniter/sensor unit is the part listed for my make and model water heater, but it would not install without grinding and drilling on the burner plate and the part mounts. It looks like the part was intended to fit, but was ineptly designed without allowances for material thicknesses of bracket assemblies.
Showing 1-10 of 38 reviews

Yes I would buy again

Exact fit
StringBean
Michigan
2 months ago
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Water heater flame sensor & igniter

Exact fit, packaged very well. Couldn't ask for more. Except lower price 😁.
Bob
Cincinnati, OH.
10 months ago
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Excellent service

Ordered part from a cheaper supplier and after a week and a half no part. And no hot water. Ordered from supply house and had the part in couple days and installed. Should of gone through supply house first.
Bob
Elmore ohio
3 years ago
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Worked perfectly

This was for a propane water heater and the parts were hard to find locally. This OEM part worked perfectly from Supplyhouse.com.
JES
Iowa
3 years ago
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Very disappointed

This igniter/sensor unit is the part listed for my make and model water heater, but it would not install without grinding and drilling on the burner plate and the part mounts. It looks like the part was intended to fit, but was ineptly designed without allowances for material thicknesses of bracket assemblies.
JohnB
Portland, OR
3 years ago
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Great service from SupplyHouse.

The exact replacement for to repair my AQ Smith water heater.
Multifamily Investor
CT
4 years ago
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I will absolutely be using Supply Warehouse in the future

The parts I ordered through Supply Warehouse were spot on correct and a direct fit right out of the box. The attention to detail that they have is second to none. Highly recommended.....5 star in my book.
Froggy
Dousman WI
4 years ago
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Perfect replacement for our 2009 gas water heater!

We thought we had to replace our water heater ($4,000 to $8,000 estimates) when we couldn't find the obsolete parts. After finding this part by serial number and identifying by picture only, it works like a champ! Starts each time on the first try. The old flame sensor had been cleaned and was beyond cleaning. Supplyhouse saved our family a fortune. This replaced the worn parts on an AO Smith, 50 gallon, 50K btu, natural gas, tall water heater with a power vent on top. AO Smith was unable to even supply a parts number because of the age of the unit. Thank you!
Richie Rich
Poolesville, Md
4 years ago
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hot surface ignition

son and his family moved into a different house. shortly thereafter, the A.O. Smith hot water heater started working sporadically. did some research, and bought this ignitor. simple to install, very good price. works great now.
tall guy
syracuse
4 years ago
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Hot water

Worked first time gas water heater cycled on. Thanks for having great products!
The fixer
Southern Illinois
4 years ago
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