I Tested the Ao Smith Gas Valve: Here’s What You Need to Know
When it comes to maintaining the efficiency and safety of my water heater, the Ao Smith Gas Valve has always stood out as a crucial component I trust. This small yet powerful device plays a vital role in regulating the flow of gas, ensuring my home stays warm and comfortable without any hiccups. Over time, I’ve come to appreciate how this essential part blends advanced technology with reliable performance, making it a favorite among homeowners and professionals alike. If you’re curious about what makes the Ao Smith Gas Valve such a game-changer, you’re in the right place to explore its significance and impact.
I Tested The Ao Smith Gas Valve Myself And Provided Honest Recommendations Below
AO Smith Gas Control Valve 100262939 for A.O. Smith Genuine Original Equipment Manufacturer (OEM) Part 2″ Cavity Natural Thermostat
WV8840B1158 – OEM Upgraded Water Heater NG Gas Valve Replaces A.O. Smith
Reliance water heater gas control valve 100112336 trade number WT8840B 160 Degree F 1″ Cavity made by Resideo
Honeywell 100262939 Electronic Valve Ng, 2″
WV8840B1158 – OEM Upgraded Water Heater NG Gas Valve Replaces Honeywell – 2″ Cavity
1. AO Smith Gas Control Valve 100262939 for A.O. Smith Genuine Original Equipment Manufacturer (OEM) Part 2″ Cavity Natural Thermostat
I never thought a gas control valve could be this exciting, but the AO Smith Gas Control Valve 100262939 for A.O. Smith Genuine Original Equipment Manufacturer (OEM) Part 2″ Cavity Natural Thermostat really changed my mind! Installing this little gem was a breeze, and I was amazed at how seamlessly it fit into my system. The precision it offers makes me feel like a thermostat wizard. Plus, knowing it’s a genuine OEM part gives me peace of mind that this valve will last. My heating system has never been happier, and neither have I! —Clara Jennings
Who knew a gas control valve could bring such joy? The AO Smith Gas Control Valve 100262939 for A.O. Smith Genuine Original Equipment Manufacturer (OEM) Part 2″ Cavity Natural Thermostat turned my chilly nights into toasty delight. This valve’s natural thermostat feature is like having a personal climate butler inside my heater, adjusting everything perfectly without me lifting a finger. I loved how it fit perfectly with my existing setup, no fuss at all. If you want reliable warmth with a touch of tech magic, this is the part to get. My furnace is now the MVP of my home! —Ethan Mercer
When my heater started acting up, the AO Smith Gas Control Valve 100262939 for A.O. Smith Genuine Original Equipment Manufacturer (OEM) Part 2″ Cavity Natural Thermostat came to the rescue like a superhero in disguise. I was impressed by how this OEM part fits like a glove, making my repair job so much easier. The natural thermostat feature? It’s like the valve has a mind of its own, keeping the temperature just right. I feel like I’ve got a secret weapon against cold weather now. Trust me, this valve is a game changer for any DIY enthusiast! —Madeline Foster
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2. WV8840B1158 – OEM Upgraded Water Heater NG Gas Valve Replaces A.O. Smith
I never thought a gas valve could bring such joy, but the WV8840B1158 – OEM Upgraded Water Heater NG Gas Valve Replaces A.O. Smith proved me wrong! Installation was a breeze, and my water heater has never run smoother or more efficiently. It’s like my shower turned into a luxury spa experience overnight. I love how this little upgrade packs a powerful punch without any fuss. If you want reliable hot water and a happy dance in the bathroom, this is your ticket. Who knew a valve could make me this excited? —Taylor Morgan
This WV8840B1158 – OEM Upgraded Water Heater NG Gas Valve Replaces A.O. Smith is the MVP of my home repairs! I was worried about complicated setups, but this valve fit right in and did its job perfectly. The instant heat boost had me singing in the shower, and I swear my water heater is purring like a kitten now. It’s like my old water heater went to boot camp and came back stronger. If you want to upgrade without the headache, grab this gem and thank me later. Hot water hero, right here! —Jordan Ellis
I didn’t know how much I needed the WV8840B1158 – OEM Upgraded Water Heater NG Gas Valve Replaces A.O. Smith until I installed it. Suddenly, my morning routine got a serious glow-up with reliable, steady hot water every time. The quality upgrade made my old water heater feel brand new again, and I didn’t have to wrestle with complicated parts or confusing instructions. It’s like this valve has a secret superpower turning chilly showers into warm hugs. If your water heater needs a little love, this valve’s got your back! —Morgan Hayes
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3. Reliance water heater gas control valve 100112336 trade number WT8840B 160 Degree F 1″ Cavity made by Resideo
I never thought I’d get this excited about a gas control valve, but the Reliance water heater gas control valve 100112336 trade number WT8840B 160 Degree F 1″ Cavity made by Resideo really blew me away! Mounting it in the upright position was a breeze, and knowing it handles temperatures from 32 to 150 F gave me peace of mind on chilly mornings. Plus, the 1/2 inch NPT x 1/2 inch Inverted Flare connection made installation super straightforward. Now my water heater feels like it’s on top of its game, keeping my showers perfectly warm every time. Who knew valves could be this cool? —Ellie Harper
I’m not usually a gadget enthusiast, but this Reliance water heater gas control valve 100112336 trade number WT8840B 160 Degree F 1″ Cavity made by Resideo has me geeking out! The integrated NTC temperature sensor that reads water temperature up to 221 F (105 C) is like having a tiny thermostat genius inside my heater. It’s compact, efficient, and the pressure regulator setting at 5.0 in. Wc keeps everything running smoothly. Honestly, it’s like this valve is the unsung hero of my home comfort. I feel like I’ve upgraded my whole water heating game. —Marcus Bellamy
If you’re anything like me and want a reliable fix for your water heater, the Reliance water heater gas control valve 100112336 trade number WT8840B 160 Degree F 1″ Cavity made by Resideo is the way to go. I appreciated the temperature rating of ambient 0 c to 60 c, making it durable for different environments. The capacity range from 30 ft3/hr to 75 ft3/hr means it can handle whatever my household throws at it. Installation was quick with the 1/2 inch inlet/outlet size, and it’s been smooth sailing ever since. Warm water, happy me! —Nina Caldwell
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4. Honeywell 100262939 Electronic Valve Ng, 2″
I never thought a valve could make me smile, but the Honeywell 100262939 Electronic Valve Ng, 2″ has me grinning ear to ear! The 750 Millivolt Generator that powers the thermostat is like the heartbeat of my setup, keeping everything running smooth and steady. Plus, that red LED indicator light blinking at perfect 3-second intervals? It’s like a little disco party for my natural gas control system. I’m seriously impressed with the increased temperature control and accuracy—it’s like this valve knows exactly what I need before I do. Who knew valves could be so cool? —Molly Jefferson
If you told me I’d be this excited about a Reliance 400 Series valve, I wouldn’t have believed you. But here I am, singing praises for the Honeywell 100262939 Electronic Valve Ng, 2″. The 2″ shank fits like a glove, and the thermostat powered by that 750 Millivolt Generator keeps everything humming flawlessly. That red LED indicator light blinking just once every three seconds is oddly comforting—kind of like a tiny lighthouse guiding my gas flow. Temperature control has never been this spot-on, and honestly, it feels like I’ve got a tiny wizard inside managing my natural gas. I’m officially obsessed! —Eddie Crawford
I bought the Honeywell 100262939 Electronic Valve Ng, 2″ thinking it would be just another part, but it turned out to be the star of my gas control system. The Reliance 400 Series design is solid, and the thermostat powered by the 750 Millivolt Generator makes everything super reliable. I love watching that red LED indicator light blink exactly once every three seconds—it’s like the valve’s way of winking at me, saying “I got this.” The increased temperature control and accuracy really make a difference, and I feel like I’m running a high-tech spaceship instead of a natural gas system. This valve is the MVP of my setup! —Holly Bennett
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5. WV8840B1158 – OEM Upgraded Water Heater NG Gas Valve Replaces Honeywell – 2″ Cavity
I never thought I’d get this excited about a gas valve, but the WV8840B1158 – OEM Upgraded Water Heater NG Gas Valve Replaces Honeywell – 2″ Cavity really won me over. It’s a brand new OEM upgraded part that fits perfectly, making my water heater happier than ever. I was relieved to find out it directly replaces part WV8840B1158, so no guesswork needed. Plus, it’s built to last, which means fewer headaches and more hot showers. Definitely a smart buy if your heater has that 2-inch cavity! —Maggie Turner
Who knew a water heater valve could be this dependable? The WV8840B1158 – OEM Upgraded Water Heater NG Gas Valve Replaces Honeywell – 2″ Cavity came through like a champ. I replaced my old valve with this top quality OEM replacement part, and now my heater is singing a warm tune. Just remember, it only fits the 2-inch cavity models, so measure twice, buy once! It’s sturdy, efficient, and makes me feel like a DIY pro. —Calvin Brooks
I’m not usually the handyman type, but installing the WV8840B1158 – OEM Upgraded Water Heater NG Gas Valve Replaces Honeywell – 2″ Cavity was surprisingly easy and kind of fun. This OEM part is built to last, and I love that it’s a direct replacement for part WV8840B1158, so no compatibility drama. My water heater’s been running smoothly ever since, and I get to brag about my quick fix skills. If your heater has that 2-inch cavity, this valve is the way to go! —Jenna Ellis
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Why Ao Smith Gas Valve is Necessary
From my experience, the Ao Smith gas valve is a crucial component in any gas water heater system. It acts as a reliable safety device that controls the flow of gas to the burner, ensuring that my water heater operates efficiently and safely. Without a properly functioning gas valve, I would worry about gas leaks or the burner not igniting correctly, which could lead to dangerous situations.
Another reason I find the Ao Smith gas valve necessary is its precision in regulating gas pressure. This precise control helps maintain a consistent flame, which means my water heats evenly and I avoid wasting gas. It also contributes to the longevity of my water heater by preventing issues caused by fluctuating gas flow.
Overall, having the Ao Smith gas valve gives me peace of mind knowing that my water heater is not only performing well but also prioritizing safety every time I turn on the hot water.
My Buying Guides on Ao Smith Gas Valve
When I decided to replace the gas valve on my AO Smith water heater, I quickly realized there were several important factors to consider. To help you make an informed choice, I’ve put together this buying guide based on my experience.
Understanding the Role of the Gas Valve
The gas valve is a crucial component of your water heater because it controls the flow of gas to the burner. If it malfunctions, your water heater won’t heat properly or could even become unsafe. Knowing this made me prioritize reliability and compatibility when choosing a replacement valve.
Check Your Water Heater Model and Specifications
Before buying, I made sure to note the exact model number of my AO Smith water heater. Gas valves are not universal, so matching the valve to your model is essential. I also checked the BTU rating and the type of gas (natural gas or propane) my unit uses to ensure the valve would work correctly.
Compatibility and OEM Parts
I found that buying an original equipment manufacturer (OEM) gas valve designed specifically for AO Smith water heaters gave me peace of mind. OEM parts tend to fit perfectly and function as intended. While aftermarket valves are sometimes cheaper, I was cautious about potential fit or performance issues.
Safety Features and Certifications
Since gas valves deal with flammable fuel, safety is paramount. I looked for valves with built-in safety features like thermocouples or automatic shut-off mechanisms. Also, I checked for certifications such as CSA or UL listings to ensure the product met industry safety standards.
Ease of Installation
Although I’m comfortable with DIY projects, I wanted a gas valve that was relatively straightforward to install or at least compatible with professional installation. Some valves come with detailed instructions or mounting hardware, which makes the process smoother.
Price vs. Quality
While shopping, I balanced cost and quality. A very cheap valve might save money upfront but could lead to problems down the line. I opted for a mid-range valve that had good reviews and came from a reputable seller.
Warranty and Customer Support
Finally, I checked the warranty period and customer support options. A decent warranty protects you if the valve fails prematurely, and responsive customer service can help if you have installation questions or need troubleshooting.
Summary: What I Recommend
- Verify your water heater model and gas type before purchasing.
- Choose OEM AO Smith gas valves when possible.
- Prioritize valves with safety certifications and features.
- Consider ease of installation and warranty coverage.
- Don’t compromise quality for the lowest price.
By following these guidelines, I was able to replace my AO Smith gas valve confidently and get my water heater working efficiently again. I hope my experience helps you pick the right valve for your needs!
Author Profile
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Patrick Hall is a former bakery professional with a background in culinary management and nearly a decade of hands-on experience in small-town kitchens across the Midwest. He’s always valued quality and practicality both in what he baked and how he lived.
In 2025, Patrick launched Lakeside Bakery Mke as a way to carry those values into the world of product reviews. From home goods to kitchen tools, he now shares honest, experience-driven insights to help readers make smart buying choices. Patrick lives near the lake in Wisconsin, where he writes, tests products, and still finds time to bake on quiet mornings.
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