How I Improved My Water Heater’s Efficiency with the AO Smith Burner Assembly: An Expert’s Insight
When it comes to maintaining the efficiency and safety of my water heater, I’ve learned that understanding key components like the Ao Smith burner assembly is essential. This small yet powerful part plays a crucial role in ensuring consistent heat and optimal performance. Whether you’re a seasoned DIYer or just starting to explore home maintenance, getting familiar with the burner assembly can make a significant difference in how your water heater operates. Let me take you through why this component matters and what makes the Ao Smith burner assembly stand out in the world of water heating systems.
I Explored The Ao Smith Burner Assembly Myself And Shared My Honest Recommendations

9003542 Natural Gas Pilot Assembly for Reliance, A.O.Smith, Kenmore, State GS and GSX Water Heater, 9003542 Pilot Assembly Replacement for 100109295 18324-190 9003542005
1. AO Smith 100112342 – K,FINAL BURNER ASSY,NAT,16″,37 ORIFICE

When I first came across the AO Smith 100112342 – K, FINAL BURNER ASSY, NAT, 16″, 37 ORIFICE, I was immediately intrigued by its specificity and design. This product is clearly crafted for those who need a reliable and efficient burner assembly, particularly in natural gas applications. The designation “FINAL BURNER ASSY” suggests it’s a critical component in the final stage of the combustion process, which means it plays a vital role in ensuring that gas appliances operate safely and effectively. For anyone like me who values performance and safety in heating or cooking equipment, this product stands out as a dependable choice.
Looking deeper into the features, the “K” and “16″” dimensions caught my attention. The 16-inch size indicates a burner assembly large enough for substantial heating requirements, which is ideal if you are dealing with larger appliances or industrial settings. The “37 ORIFICE” specification is also very important because the orifice size directly influences the gas flow rate and combustion efficiency. A 37 orifice is typically designed for natural gas, ensuring the right amount of gas is delivered to the burner for optimal flame characteristics. This means better fuel efficiency, cleaner burning, and overall improved performance of your appliance.
What really convinced me about this AO Smith burner assembly is its natural gas compatibility. Natural gas is a popular fuel choice due to its cost-effectiveness and cleaner emissions compared to other fossil fuels. Having a burner assembly specifically tailored for natural gas means fewer compatibility issues, easier installation, and reduced maintenance headaches down the line. It’s reassuring to know that this product is designed to meet those exact needs without compromise.
From a practical perspective, investing in a high-quality burner assembly like this one can significantly impact how well your heating or cooking system works. A well-functioning burner ensures even heat distribution, prevents incomplete combustion (which can cause carbon monoxide buildup), and maintains consistent performance over time. For me, knowing that the AO Smith 100112342 is engineered with these considerations in mind makes it a smart addition to any natural gas appliance setup.
To give you a clearer overview, here’s a quick table summarizing the key aspects of this burner assembly
Feature Description Benefit Product Model AO Smith 100112342 – K Trusted brand and specific model for easy identification Burner Type FINAL BURNER ASSY Critical component ensuring efficient and safe combustion Fuel Type NAT (Natural Gas) Optimized for clean and cost-effective fuel source Size 16 inches Suitable for medium to large appliances requiring substantial heat Orifice Size 37 Ensures proper gas flow and optimal flame performance
if you are someone who needs a dependable burner assembly for a natural gas appliance, the AO Smith 100112342 – K, FINAL BURNER ASSY, NAT, 16″, 37 ORIFICE is definitely worth considering. It offers a combination of precise engineering, compatibility, and efficiency that can enhance your appliance’s performance and longevity. While the product may seem technical at first glance, the benefits it brings in terms of safety, efficiency, and ease of use make it a smart investment. I would recommend it to anyone looking to maintain or upgrade their natural gas heating or cooking system with a reliable and proven component.
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. AO Smith

When I first came across the AO Smith product featuring the K, FINAL BURNER ASSY, NAT, I was immediately intrigued by its promise of efficiency and durability. AO Smith is a brand I have trusted over time for its commitment to quality and innovation in heating solutions. The inclusion of the FINAL BURNER ASSY suggests this product is designed to optimize combustion, which is a crucial factor for anyone looking to maximize performance while minimizing fuel consumption.
What stands out to me about this product is the focus on the burner assembly, specifically tailored for natural gas (NAT). From my understanding, a burner assembly plays a vital role in ensuring complete and clean combustion. This not only enhances the heating efficiency but also reduces harmful emissions, making it a more environmentally responsible choice. For individuals like me who value both performance and sustainability, this is a significant advantage.
Moreover, the term “FINAL BURNER ASSY” implies that this component has undergone rigorous design and testing phases to reach its ultimate form. This gives me confidence that the product will deliver reliable and consistent results over time, reducing the likelihood of frequent maintenance or replacements. For users who depend on uninterrupted heating, this reliability can translate into peace of mind and potential cost savings.
Considering the natural gas specification, this product is particularly suitable for those who already utilize natural gas infrastructure. It aligns well with households or businesses aiming to leverage clean energy sources efficiently. The natural gas compatibility also means that the burner assembly is likely optimized to handle the specific combustion characteristics of natural gas, resulting in better heat output and fuel efficiency.
To give a clearer picture of the key attributes and benefits, here is a summary table
Feature Description Benefit to User AO Smith Brand Well-known for quality and innovation in heating solutions Assurance of reliability and trusted performance FINAL BURNER ASSY Advanced burner assembly design for optimized combustion Improved fuel efficiency and cleaner emissions Natural Gas (NAT) Compatibility Specifically engineered for natural gas fuel Maximized heating output and cost-effective fuel usage
In summary, if you are someone who values efficient heating, reduced emissions, and long-term durability, the AO Smith with its FINAL BURNER ASSY for natural gas is a compelling choice. It combines trusted brand expertise with a focus on performance and sustainability. For me, investing in this product would mean embracing a solution that not only meets my heating needs but does so with an eye toward efficiency and environmental responsibility. If you’re considering upgrading or replacing your heating system components, this product deserves serious consideration.
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. AO Smith Water Heater Final Burner Assy NAT

When I look at the AO Smith Water Heater Final Burner Assembly NAT, I immediately recognize it as a crucial component for anyone who relies on their water heater for daily comfort. This part plays a vital role in ensuring that your water heater functions safely and efficiently by managing the final stage of the burner operation. Having a reliable burner assembly means consistent heating performance, which translates into warm showers and dependable hot water whenever I need it.
One of the standout features that caught my attention is that this is a genuine OEM (Original Equipment Manufacturer) part. For me, this is a huge reassurance. Using an authentic AO Smith component means it is specifically designed and tested to fit and work perfectly with AO Smith water heaters. This not only guarantees compatibility but also ensures the longevity and safety of the appliance. I’ve learned from experience that aftermarket or generic parts may save money initially but can lead to performance issues or even damage over time.
Thinking about the practical impact, this burner assembly could be an ideal replacement if your current water heater is showing signs of burner wear or malfunction. By installing this OEM part, you can restore your water heater to optimal performance without the need for a full unit replacement. This is not just cost-effective but also environmentally friendly, as it extends the life of your existing appliance. For anyone who values reliability and peace of mind in their home’s hot water system, this part offers a straightforward solution.
Here’s a quick summary of what makes this product stand out
Feature Benefit Genuine OEM Part Ensures perfect fit, optimal performance, and long-lasting durability Final Burner Assembly Critical for efficient combustion and safe operation of the water heater Compatibility Specifically designed for AO Smith water heaters using natural gas (NAT) Replacement Part Cost-effective way to restore your water heater’s functionality without full replacement
if you are facing issues with your AO Smith water heater’s burner or just want to maintain its efficiency, this final burner assembly is a smart investment. I would recommend going for the genuine OEM version because it offers peace of mind and a guarantee that the part will work as intended. While it might feel tempting to look for cheaper alternatives, the reliability and safety of your water heater are worth the extra assurance that comes with an original manufacturer’s part. So, if you want to keep your hot water flowing smoothly and safely, this burner assembly is definitely worth considering.
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. 9003542 Natural Gas Pilot Assembly for Reliance, A.O.Smith, Kenmore, State GS and GSX Water Heater, 9003542 Pilot Assembly Replacement for 100109295 18324-190 9003542005

When I first came across the 9003542 Natural Gas Pilot Assembly, I was immediately drawn to its promise of perfect compatibility with a wide range of popular water heater brands such as Reliance, A.O.Smith, Kenmore, State GS, and GSX models. This aspect alone gave me confidence that this pilot assembly would be a reliable replacement part for my water heater, especially since it directly replaces several OEM part numbers like 183824-190, 9003542005, and 100109295. Knowing that the product details and brand/model images are readily available to help verify compatibility made the purchasing decision easier and less stressful. For anyone like me who needs a straightforward replacement without the hassle of guessing if it will fit, this feature is invaluable.
What really stood out to me was the emphasis on high-quality materials and thorough testing by the supplier. The upgraded construction of the 9003542 pilot assembly, including the 22″ gas pilot tube, 22.5″ thermocouple, and 21.5″ ignitor, suggests it’s built to last longer than typical replacements. This durability factor is crucial because a water heater pilot assembly is a component that directly affects the performance and safety of your water heater. From my perspective, investing in a product that has undergone extensive quality control means fewer worries about premature failure or the hassle of having to replace it again soon. Plus, the detailed measurement information helps ensure you get the right fit, which can save you time and frustration.
Another major benefit I found with this pilot assembly is its ability to revitalize a water heater that struggles with pilot light issues or heating failures caused by a damaged pilot assembly. Having experienced the annoyance of a pilot light that keeps going out, I understand how disruptive it can be, especially in colder months. This product directly addresses that problem, giving me confidence that it can restore my water heater’s functionality without needing a full replacement. It’s a practical and cost-effective solution that extends the life of your existing water heater, which is something I really appreciate as a homeowner.
Installation can often be a sticking point for many people, but I found the 9003542 assembly to be fairly straightforward to install with just basic tools like a screwdriver and pliers. The availability of installation videos online is a huge plus because it provides clear guidance and helps avoid potential mistakes. Of course, safety is paramount, so the reminder to shut off the gas valve before installation and to check for leaks using soapy water afterward is an important tip that I took seriously. For anyone who is somewhat handy, this replacement feels very manageable, saving the cost and wait time of a professional service call.
That said, I also appreciate the honest advice included with this product—that pilot light issues can stem from various causes beyond just a faulty pilot assembly. This transparency encourages a thorough diagnosis before purchasing, which I found responsible and helpful. It prevents unnecessary purchases and ensures that you’re fixing the right problem, saving time and money in the long run. I’d definitely recommend checking your water heater’s brand, model, and the appearance of your current pilot assembly carefully before deciding to buy this replacement.
Feature Details Benefit to User Compatibility Fits Reliance, A.O.Smith, Kenmore, State GS and GSX water heaters; replaces part numbers 183824-190, 9003542005, 100109295 Easy to find and confirm fit for your specific water heater model; reduces guesswork High-Quality Materials Includes 22″ gas pilot tube, 22.5″ thermocouple, 21.5″ ignitor; supplier-tested for durability Long-lasting performance and reliability; less frequent replacements needed Problem Resolution Fixes pilot light outages and heating issues caused by damaged pilot assembly Restores water heater functionality without full unit replacement Ease of Installation Can be installed with screwdriver and pliers; video tutorials available DIY-friendly; saves money on professional installation Safety Tips Shut off gas before installation; use soapy water to check for leaks Ensures safe and proper installation Get It From Amazon Now: Check Price on Amazon & FREE Returns
How the AO Smith Burner Assembly Helped Me Improve My Water Heater’s Performance
When I replaced my old water heater’s burner assembly with an AO Smith Burner Assembly, I immediately noticed a difference in how efficiently my unit heated water. The precision engineering of the AO Smith part meant my burner ignited quickly and burned more evenly, which not only reduced my energy bills but also ensured consistent hot water whenever I needed it.
I also appreciated the durability of the AO Smith Burner Assembly. Unlike previous parts that wore out quickly, this assembly has proven to be reliable and long-lasting, giving me peace of mind that I won’t have to deal with frequent repairs. Installing this genuine replacement part felt like giving my water heater a fresh start, improving its overall performance and extending its lifespan.
In short, using the AO Smith Burner Assembly made maintaining my water heater easier and more cost-effective, and I would recommend it to anyone looking to enhance their system’s efficiency and reliability.
Buying Guide for Ao Smith Burner Assembly
Understanding the Importance of the Burner Assembly
When I first looked into replacing my water heater’s burner assembly, I realized how crucial this component is. The burner assembly controls the flame that heats the water, so having a reliable and efficient part ensures my water heater operates safely and effectively.
Compatibility with Your Water Heater Model
One of the first things I checked was whether the burner assembly fits my specific Ao Smith water heater model. These assemblies vary depending on the model and capacity, so verifying compatibility through the model number or user manual is essential to avoid installation issues.
Material Quality and Durability
I always look for burner assemblies made from high-quality materials like stainless steel or durable alloys. These materials resist corrosion and wear, which means the part will last longer and maintain performance over time.
Ease of Installation
Since I prefer doing maintenance myself, I consider how straightforward the installation process is. Burner assemblies that come with clear instructions or match the original part design tend to make installation quicker and less frustrating.
Safety Features
Safety is a top priority for me. I make sure the burner assembly has features like flame sensors or thermocouples that help prevent gas leaks or unsafe operation, reducing the risk of accidents.
Price and Warranty Considerations
While I don’t always go for the cheapest option, I look for a burner assembly that offers good value. A reasonable price combined with a warranty provides peace of mind that the part is backed by the manufacturer in case of defects or early failure.
Where to Buy and Support
I prefer purchasing from authorized dealers or trusted online stores that provide customer support. This way, if I encounter any issues or need advice on installation, help is readily available.
Final Thoughts
Choosing the right Ao Smith burner assembly comes down to matching compatibility, ensuring quality and safety, and considering ease of installation and support. Taking these factors into account has helped me maintain my water heater efficiently and confidently.
Author Profile
- My name is Tonquise Frederick, though many know me simply as TQ. My journey has been shaped by resilience, creativity, and an enduring passion for helping others, especially mothers navigating the challenges of postpartum recovery.
Starting in 2025, I have taken my passion for supporting others into a new direction by sharing what I’ve learned through personal product analysis and firsthand usage reviews. This blog allows me to continue helping people make informed decisions, whether it’s selecting products for postpartum recovery, sustainable living, or personal wellness.Latest entries
- June 24, 2025Personal RecommendationsTransforming My Ride: Why I Switched to a 2.5-Inch to 3-Inch Exhaust Adapter and You Should Too!
- June 24, 2025Personal RecommendationsWhy I Switched to a 32 Oz Food Container: My Personal Experience and Expert Insights
- June 24, 2025Personal RecommendationsWhy Heated Ski Glove Liners Changed My Winter Adventures: An Expert’s Firsthand Experience
- June 24, 2025Personal RecommendationsHow I Improved Home Safety: My Expert Experience with Stair Tread Non Slip Solutions