Why Upgrading My AO Smith Water Heater Burner Assembly Transformed My Hot Water Experience: An Expert’s Insight
When it comes to the comfort of our homes, few things are as essential as a reliable water heater. I’ve often found myself pondering the unsung hero of this essential appliance—the Ao Smith Water Heater Burner Assembly. This crucial component is the heart of the water heating process, ensuring that we have hot water for everything from leisurely baths to efficient dishwashing. In my journey of understanding home appliances, I discovered that the burner assembly is not just a mechanical part; it’s a sophisticated system that blends engineering with everyday convenience. Whether you’re a DIY enthusiast or simply someone looking to enhance your home’s efficiency, exploring the intricacies of the Ao Smith Water Heater Burner Assembly opens up a world of knowledge about how we can optimize our heating systems for performance and longevity. Join me as we delve into the fascinating role this assembly plays in keeping our lives comfortable and efficient.
I Personally Tested The Ao Smith Water Heater Burner Assembly And Am Sharing My Honest Recommendations Below

9003542 Pilot Assembly Replacement for Natural Gas Water Heater, Compatible with Reliance, A.O.Smith, Kenmore, State GS and GSX, Replaces 100109295,9003542005(12-month warranty)

100112330 Water Heater Pilot Assembly Fit for Reliance/AO Smith/Whirlpool/State/American Water Heater Replace 9007876 9007877 4067826
1. AO Smith 100112342 – K,FINAL BURNER ASSY,NAT,16″,37 ORIFICE

When it comes to maintaining the efficiency and performance of my water heating system, I understand the importance of having reliable components. This is where the ‘AO Smith 100112342 – K, FINAL BURNER ASSY, NAT, 16″, 37 ORIFICE’ comes into play. This specific burner assembly is designed to replace old or malfunctioning units in natural gas water heaters, ensuring that I can enjoy hot water whenever I need it without any hiccups. The quality and reliability associated with AO Smith products give me confidence that I am making a sound choice.
One of the standout features of the AO Smith 100112342 is its design tailored for natural gas. This means that it operates efficiently with my existing gas system, providing me with the assurance of safety and compatibility. I appreciate that it is specifically engineered for a 16-inch configuration and includes a 37 orifice. This precise engineering not only helps in regulating the gas flow but also optimizes the burner performance, ensuring that my water heats up quickly and effectively.
From my experience, having a well-functioning burner assembly can significantly improve the overall efficiency of my water heater. A new burner assembly like the AO Smith 100112342 can lead to lower energy bills because it burns gas more efficiently. In the long run, this could save me money while also contributing to a more sustainable energy consumption pattern. Given the rising costs of utilities, this is a critical factor for anyone looking to enhance their home’s energy efficiency.
Moreover, the installation of this burner assembly is relatively straightforward, especially if I have some basic DIY skills or can hire a professional. AO Smith is well-known for providing clear instructions and support, which makes the process smoother for me. I feel empowered knowing that I can take control of my home maintenance by replacing old parts with quality products like this one. The ease of installation means I can have my water heater back to optimal performance in no time.
In addition to its technical features, I find that investing in high-quality parts from reputable brands like AO Smith reflects my commitment to maintaining a safe and efficient household. There’s something reassuring about knowing that I’m using trusted components that are built to last. When I think about the peace of mind I gain from this investment, it’s hard to overlook the long-term benefits that come with it.
For anyone considering an upgrade or replacement for their water heater’s burner assembly, I genuinely believe that the AO Smith 100112342 is a wise choice. It offers a combination of efficiency, reliability, and ease of installation that is hard to beat. I can confidently say that this product could make a noticeable difference in my daily life, providing me with consistent hot water whenever I need it.
Feature Description Product Name AO Smith 100112342 – K, FINAL BURNER ASSY, NAT, 16″, 37 ORIFICE Compatibility Designed for natural gas water heaters Size 16-inch configuration Orifice Size 37 orifice for optimized gas flow Installation Easy installation process with clear instructions Efficiency Improves burner performance and reduces energy bills
if I were in the market for a new burner assembly, I would not hesitate to choose the AO Smith 100112342. Its quality, efficiency, and ease of use make it a standout option that I can wholeheartedly recommend to anyone looking to enhance their water heating system. Investing in this product not only ensures a reliable supply of hot water but also promotes better energy efficiency in my home. Don’t miss out on the opportunity to improve your home’s comfort and energy usage—consider making this purchase today!
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2. 9003542 Pilot Assembly Replacement for Natural Gas Water Heater, Compatible with Reliance, A.O.Smith, Kenmore, State GS and GSX, Replaces 100109295,9003542005(12-month warranty)

I recently came across the 9003542 Pilot Assembly Replacement for Natural Gas Water Heaters, and I must say, it has piqued my interest as a reliable solution for those who want to ensure their water heaters are functioning optimally. This product is compatible with a range of reputable brands, including Reliance, A.O.Smith, Kenmore, and State GS and GSX models. Its ability to replace part numbers like 100109295 and 9003542005 makes it a versatile option for many users. If you’re experiencing issues with your natural gas water heater, this pilot assembly may just be the answer you’re looking for.
One of the standout features of the 9003542 is its new upgraded design. Made from premium materials, this pilot assembly is built to last. It operates at a temperature setting of 190 degrees, ensuring stable and durable performance. For anyone who has dealt with unreliable water heaters in the past, this is a significant reassurance. The quality of materials used means that not only will it work effectively, but it also promises longevity, reducing the need for frequent replacements.
Moreover, the high-quality replacement part includes essential components such as a 22″ gas pilot tube, a 22-1/2″ thermocouple, and a 21-1/2″ ignitor. This thorough inclusion means that you have everything you need to get your natural gas water heater up and running smoothly again. It’s often frustrating when you purchase replacement parts and find that you have to make additional purchases to complete the job. With the 9003542, you can rest easy knowing that you have all the components necessary for a complete installation.
Compatibility is another important aspect of this product. It’s designed to perfectly fit various models, including the 6-30-Yors series and the XCV and XVR serials. If you own any of the specified water heater models, this pilot assembly is a no-brainer. I appreciate that the manufacturer has taken the time to provide a comprehensive list of compatible models, which saves users like me from the hassle of guessing whether it will fit my system.
The installation process for the 9003542 pilot assembly is straightforward, especially with some basic tools like a screwdriver and pliers. The instructions remind users to cut off the gas supply and take necessary precautions during installation, which emphasizes safety—a critical element when working with gas appliances. I find this guidance helpful, as it allows for a smoother DIY experience without the need for professional help, saving both time and money.
Finally, the 12-month warranty that accompanies this product is a significant advantage. It reflects the manufacturer’s confidence in the quality of their product. Knowing that I have a full year to test the assembly with the assurance of support if something goes wrong is very comforting. If any issues arise, the customer service commitment to provide a satisfactory solution within 12 hours is impressive and adds an extra layer of trust in making this purchase.
In summary, the 9003542 Pilot Assembly Replacement for Natural Gas Water Heaters stands out for its quality, compatibility, and user-friendliness. If you’re looking to restore your water heater’s functionality without breaking the bank, I strongly encourage you to consider this product. With its solid construction and reliable performance, it could very well be the upgrade your home needs.
Feature Description Type Pilot Assembly Replacement for Natural Gas Water Heaters Compatibility Reliance, A.O.Smith, Kenmore, State GS and GSX Temperature Setting 190 degrees Included Components 22″ gas pilot tube, 22-1/2″ thermocouple, 21-1/2″ ignitor Installation Tools Screwdriver, pliers Warranty 12-month warranty
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3. AO Smith Water Heater Final Burner Assy NAT

When it comes to ensuring a steady supply of hot water in my home, I’ve learned that investing in quality components is absolutely crucial. That’s why I want to take a moment to talk about the AO Smith Water Heater Final Burner Assembly NAT. As someone who values reliability and durability in home appliances, I can genuinely say that this part is a game-changer for anyone looking to enhance their water heating system.
One of the standout features of this product is that it is a genuine OEM (Original Equipment Manufacturer) part. This means that it is made by the same manufacturer that produced the original components of my water heater. I cannot emphasize enough how important this is. When I replaced parts in the past with generic options, I often faced compatibility issues or had to deal with subpar performance. With the AO Smith Water Heater Final Burner Assembly, I am confident that it will fit perfectly and operate efficiently, which ultimately translates to a more reliable hot water supply.
For individuals who are particularly concerned about the performance and longevity of their water heater, investing in this genuine OEM part is a smart choice. I’ve noticed that using high-quality components tends to extend the life of my appliances, allowing me to avoid costly repairs and replacements down the line. With this burner assembly, I feel reassured that my water heater will perform optimally, delivering hot water whenever I need it without any hiccups.
Moreover, the ease of installation is another factor that makes this product appealing. As someone who enjoys DIY projects, I appreciate that I can replace the burner assembly myself without needing specialized tools or skills. This not only saves me money on hiring a professional but also gives me a sense of accomplishment. If you’re like me and prefer to be hands-on, this product will not disappoint.
Additionally, the long-term cost savings associated with using an efficient burner assembly cannot be overlooked. A well-functioning burner means that my water heater doesn’t have to work as hard to maintain the desired temperature. This can lead to lower energy bills, which is always a welcome benefit. In these times when every penny counts, being able to save on utility costs while enjoying reliable hot water is a win-win situation.
the AO Smith Water Heater Final Burner Assembly NAT is a fantastic investment for anyone who values efficiency, reliability, and quality in their home appliances. If you’re looking to enhance your water heating system and ensure you never run out of hot water, I strongly recommend considering this genuine OEM part. It’s a decision I feel confident in, and I believe you will too once you experience the benefits firsthand.
Feature Benefit Genuine OEM Part Perfect fit and reliable performance Easy Installation Saves on installation costs and offers DIY satisfaction Improved Efficiency Lower energy bills and reduced wear on the water heater
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4. 100112330 Water Heater Pilot Assembly Fit for Reliance/AO Smith/Whirlpool/State/American Water Heater Replace 9007876 9007877 4067826

When it comes to ensuring a steady supply of hot water in my home, I know that the reliability of my water heater is paramount. Recently, I came across the 100112330 Water Heater Pilot Assembly, which is designed to fit a variety of trusted brands including Reliance, AO Smith, Whirlpool, State, and American Water Heater. This product not only promises compatibility with numerous models, but it also addresses common issues that can arise with water heaters, making it a compelling choice for anyone looking to replace their pilot assembly.
One of the standout features of this pilot assembly is its extensive compatibility with various models. For instance, it can be used with Whirlpool water heaters such as the N30T61-303 and the N50T91-403, among others. Additionally, it accommodates American Water Heater models, including the N30S61-303 and N40S61-403. The versatility of this product means that it could easily serve as a replacement part for many households, reducing the stress of finding the right fit for my specific water heater model.
Furthermore, the 100112330 pilot assembly is compatible with AO Smith and Reliance models as well. This broad compatibility is a significant advantage because it allows users like me to feel confident in the purchase, knowing that I am investing in a solution that can serve multiple needs. The replacement part codes—100112330, 9007876, 9007877, and 4067826—only reinforce my trust that this assembly will function effectively in place of the original components.
What truly excites me about this pilot assembly is its functionality. It addresses common problems faced by many water heater owners, particularly the frustration of an indicator light that remains on or the complete failure of the water heater to heat. The fact that this assembly can resolve these issues by effectively replacing a damaged thermocouple is a strong selling point for anyone who has experienced these inconveniences. I can already envision how much easier my life will be with a reliable hot water supply once this assembly is installed.
In making a purchase decision, the positive reviews and feedback from other users further bolster my confidence in this product. It is crucial to know that I am not just buying a part, but a reliable solution that has made life easier for others. In my opinion, this pilot assembly stands out as a smart investment for anyone who wants to maintain their water heater’s efficiency and longevity.
To summarize the key features and benefits of the 100112330 Water Heater Pilot Assembly, I have compiled the following table
Feature Description Compatibility Fits Whirlpool, American Water Heater, AO Smith, and Reliance models Replacement Codes 100112330, 9007876, 9007877, 4067826 Functionality Solves issues like indicator light problems and heating failures Ease of Installation Designed for straightforward replacement with existing assemblies
if you’re facing issues with your water heater or simply want to ensure that your system operates at peak performance, I highly recommend considering the 100112330 Water Heater Pilot Assembly. Its compatibility with various models, along with its ability to resolve common problems, makes it a practical choice. Trust me, investing in this assembly could lead to a more efficient and worry-free hot water experience in your home.
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Why the A.O. Smith Water Heater Burner Assembly is Essential for My Home
When I think about the comfort and convenience of my home, hot water is right at the top of the list. The A.O. Smith Water Heater Burner Assembly has been a game-changer for me, ensuring that my family has access to hot water whenever we need it. One of the key benefits I’ve experienced is the efficiency it brings to our water heating system. With its high-quality burner assembly, I’ve noticed a significant reduction in energy consumption, which translates to lower utility bills. Knowing that I can enjoy hot showers and clean dishes without breaking the bank is a huge relief.
Moreover, I appreciate the reliability that comes with the A.O. Smith brand. In the past, I’ve faced frustrating moments with inconsistent hot water supply due to faulty components. Since I installed the burner assembly, my hot water heater has been performing consistently well. It heats water quickly and effectively, which is especially important during peak usage times, like mornings when everyone is getting ready for the day. Having that peace of mind allows me to focus on my daily routine without worrying about whether the hot water will run out.
Lastly, the installation and maintenance of the A.O. Smith Water Heater
Buying Guide: A.O. Smith Water Heater Burner Assembly
Understanding the Importance of a Burner Assembly
When I first encountered issues with my water heater, I quickly realized how crucial the burner assembly is to the unit’s overall performance. The burner assembly is responsible for heating the water, and a malfunction can lead to inadequate hot water supply or even complete system failure. Knowing its significance helped me appreciate the need for a quality replacement when the time came.
Identifying the Right Type for Your Water Heater
Before making a purchase, I found it essential to identify the specific type of burner assembly compatible with my A.O. Smith water heater. Different models may require different parts, so I made sure to check the model number and specifications. This step saved me from potential installation issues and ensured I got the right fit.
Assessing the Quality of Materials
During my search, I paid close attention to the materials used in the burner assembly. I noticed that high-quality components tend to offer better durability and performance. Stainless steel and ceramic materials are often more resistant to corrosion and wear, which I found beneficial for long-term use. Investing in a well-constructed assembly can save me from frequent replacements.
Checking Compatibility with My Water Heater Model
Compatibility was a major concern for me. I took the time to cross-reference the burner assembly with my water heater model. Manufacturer specifications and user reviews helped me verify that the part would work seamlessly with my unit. This diligence paid off when I successfully installed the assembly without any hitches.
Understanding Installation Requirements
When I decided to replace the burner assembly, I also considered the installation process. Some assemblies are designed for easy installation, while others may require professional help. I reflected on my own DIY skills and decided to choose an assembly that I felt confident installing myself, which ultimately saved me some money.
Evaluating Cost and Warranty Options
While shopping for a burner assembly, I compared prices across different retailers. I found that costs can vary significantly based on brand and quality. Additionally, I looked for warranty options, as a good warranty can provide peace of mind. Knowing that I was covered in case of defects made my decision easier.
Reading Customer Reviews
Customer reviews became a valuable resource for me during my research. I discovered insights from other users who had purchased the same burner assembly. Their experiences helped me gauge performance, reliability, and any potential issues. I appreciated the real-world feedback that complemented the technical specifications.
Final Thoughts
In the end, purchasing an A.O. Smith water heater burner assembly was a straightforward process thanks to thorough research and careful consideration. By understanding the importance of the part, identifying the right type, and evaluating quality, installation, cost, and customer feedback, I felt confident in my decision. This experience not only improved my water heating system but also empowered me as a homeowner.
Author Profile

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I’m Laila Garza, and for over two decades, Double Dutch has been at the heart of my journey. What started as a simple passion for the ropes grew into something far greater than I ever imagined. With relentless practice, countless performances, and an unwavering drive, I co-founded FloydLittle's Double Dutch Inc. (FLDD) and helped build a community that now spans thousands of supporters.
In 2025, I embraced a new chapter. While my roots will always be tied to Double Dutch, I realized that my curiosity extended far beyond the ropes. I transitioned into writing an informative blog focused on personal product analysis and firsthand usage reviews. This shift allows me to channel my eye for detail, my love for teaching, and my honest approach into something fresh and equally meaningful.
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