100109908

The AO Smith 100109908 Flame Sensor is an essential component for ensuring the safe and efficient operation of your AO Smith water heater. This flame sensor is specifically designed to detect the presence of a flame in the combustion chamber, and if the flame is not present, it will prevent the gas valve from opening, preventing the water heater from operating.

The flame sensor is made of a ceramic material with a sensitive metallic element coating. This coating changes its electrical resistance when exposed to a flame, allowing the water heater's control module to detect the presence or absence of the flame. The sensor's design allows it to withstand high temperatures and corrosive environments, making it ideal for use in water heating applications.

The AO Smith 100109908 Flame Sensor is easy to install, and it comes with a detailed instruction manual to guide you through the process. The sensor is designed to fit most AO Smith water heaters, but it is essential to verify that it is compatible with your specific model before installation. If you are unsure, you can contact AO Smith's customer service for assistance.

The flame sensor is an essential safety feature for your water heater, and regular inspections and maintenance are necessary to ensure its proper functioning. If you notice any issues with your water heater's performance, such as inadequate hot water supply or unusual noises, it may be a sign that the flame sensor needs to be replaced.

Replacing the flame sensor is a relatively simple process that can be done by homeowners with some DIY skills or by a professional plumber. The sensor is located at the bottom of the water heater, and it can be accessed by removing the bottom panel. Once the old sensor is removed, the new one can be installed by following the instructions in the manual.

In summary, the AO Smith 100109908 Flame Sensor is a crucial component for ensuring the safe and efficient operation of your AO Smith water heater. Its ceramic design and sensitive metallic coating allow it to detect the presence of a flame, preventing the gas valve from opening if no flame is present. Regular inspections and maintenance are necessary to ensure its proper functioning, and replacing it is a simple process that can be done by homeowners or professionals.

Pros and Cons of Buying A.O. Smith Water Heater Flame Sensor (Model Number: 100109908)

The A.O. Smith Water Heater Flame Sensor (Model Number: 100109908) is a commonly used replacement part for various A.O. Smith water heaters. In this analysis, we will evaluate the potential advantages and disadvantages of purchasing this flame sensor.

1. Compatibility: This flame sensor is designed to work with several A.O. Smith water heaters, ensuring a good fit and proper functionality.

2. Easy Installation: The flame sensor is generally considered easy to install, with most users reporting that they were able to complete the process in under an hour.

3. Improves Heater Performance: A faulty flame sensor can cause poor performance or even prevent the water heater from functioning properly. Replacing the sensor can help restore the heater's performance.

4. Cost-Effective: Compared to the cost of purchasing a new water heater, replacing the flame sensor is a more cost-effective solution for addressing issues with your A.O. Smith water heater.

1. Limited Longevity: Some users have reported that the flame sensor does not last as long as they would have hoped, with some failing within a year of installation.

2. May Require Professional Assistance: While the installation process is relatively simple, some users may still require assistance from a professional to ensure proper installation and functionality.

3. Potential for False Alarms: In some cases, the flame sensor may trigger a false alarm, leading to unnecessary service calls or replacement of the part.

The A.O. Smith Water Heater Flame Sensor (Model Number: 100109908) offers several advantages, including compatibility, ease of installation, improved heater performance, and cost-effectiveness. However, it also comes with some disadvantages, such as limited longevity, potential need for professional assistance, and the possibility of false alarms.

If you are experiencing issues with your A.O. Smith water heater's performance and suspect that the flame sensor may be the cause, purchasing and installing a new flame sensor (Model Number: 100109908) may be a cost-effective solution. Be prepared for the potential need for professional assistance and the possibility of false alarms. If you are unsure about the installation process or suspect that other components may be causing the issue, it may be worth considering a professional diagnosis and repair.

Details:

New - Ao Smith Water Heater k,flame sensor 100109908.

specifications maxohvac:

• brand: Ao Smith Water Heater
• mpn: 100109908
• type: Food Service Supply
• country of origin: United States
• upc: 020363137342

general maxohvac:

• category: Business & Industrial > Hvac Refrigeration

payments maxohvac:

• wallet: google-pay
• other
• credit card: diners-club

returns maxohvac:

• policy: no returns

offer maxohvac:

• availability: in stock
• started: december 5, 2025
• options: ship-to-home
• sold #: 14
• prices: $45.99–$97.43
• item condition:
  • New – Open box
  • New

seller maxohvac:

• rating: 99.9%
• # reviews: 8046
• city: wagoner, oklahoma

shipping maxohvac:

• type: calculated
• service: usps ground advantage
• carrier: usps
• class: standard
• transit: 6-10 days

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