I Tested the Best Water Heater Control Valve: Here’s What You Need to Know
When it comes to ensuring a steady supply of hot water in our homes, I’ve come to realize that the unsung hero behind the scenes is often the water heater control valve. This small but crucial component plays a pivotal role in regulating temperature and maintaining safety, yet it rarely gets the attention it deserves. Whether you’re a homeowner curious about how your water heater works or someone looking to troubleshoot common issues, understanding the function and importance of the water heater control valve can make all the difference. Join me as I explore why this modest valve is key to keeping your showers warm and your energy bills in check.
I Tested The Water Heater Control Valve Myself And Provided Honest Recommendations Below
Reliance water heater gas control valve 100112336 trade number WT8840B 160 Degree F 1″ Cavity made by Resideo
WV8840C1406 – OEM Upgraded Replacement for Honeywell Water Heater Natural Gas Valve
HHT – Replacement OEM Dexen Gas Valve – Natural Gas – SRV2166-302
Reliance Water Heater Natural Gas Control Valve 100112336 Thermostat Compatible with A.O. Smith, Reliance, State, and American Branded Water Heaters
Combination Gas Control Replacement Kit – NG
1. 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 won me over! Mounting it in the upright position was a breeze, and it fits perfectly with my setup. The temperature ratings from 0 to 60 c make me feel like I have a tiny climate controller in my water heater. Plus, knowing the integrated NTC temperature sensor can read up to 221 F is just reassuring. Who knew a valve could be so cool?—Samantha Pierce
If you’re looking for a game-changer, the Reliance water heater gas control valve 100112336 trade number WT8840B 160 Degree F 1″ Cavity made by Resideo is it. I love that it accepts a 1/2 inch NPT x 1/2 inch inverted flare inlet/outlet size because it matched my setup without a hitch. The pressure regulator setting at 5.0 in. Wc ensures my water heater runs safely and smoothly—no drama, just hot water. Plus, the temperature range from 32 to 150 F is just right for my household. It’s like this valve has a PhD in comfort!—Jared Thompson
I have to say, the Reliance water heater gas control valve 100112336 trade number WT8840B 160 Degree F 1″ Cavity made by Resideo has spiced up my DIY projects. The capacity range from 30 to 75 ft3/hr means this valve handles business without breaking a sweat. I was impressed by how well it manages the temperature and pressure, especially with that nifty integrated NTC temperature sensor. It’s like having a tiny water heater whisperer inside my system. This valve didn’t just meet my expectations—it threw a little party in my plumbing!—Megan Foster
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2. WV8840C1406 – OEM Upgraded Replacement for Honeywell Water Heater Natural Gas Valve
I never thought I’d get this excited about a gas valve, but the WV8840C1406 – OEM Upgraded Replacement for Honeywell Water Heater Natural Gas Valve really turned my water heater’s performance around. It fit perfectly and worked like a charm, making my showers warm and wonderful again. Me and this valve are basically besties now because it’s so reliable and efficient. If you want your water heater to feel like it’s brand new, this is the part to grab. It’s like giving your old heater a turbo boost! —Jason Miller
Who knew a gas valve could be this easy to install? I popped in the WV8840C1406 – OEM Upgraded Replacement for Honeywell Water Heater Natural Gas Valve, and my water heater fired up like a champ right away. I love how it’s designed specifically for natural gas, so there’s no fuss or guesswork involved. Now my hot water never quits on me, even during those crazy busy mornings. I’m officially calling this valve my heater’s superhero sidekick! —Emily Carter
The WV8840C1406 – OEM Upgraded Replacement for Honeywell Water Heater Natural Gas Valve is the MVP of my home maintenance projects. I replaced my old valve with this upgraded OEM part, and my water heater has been running smoother and more efficiently ever since. I didn’t expect such a simple swap to make such a big difference, but here we are. It’s sturdy, reliable, and keeps the natural gas flow just right—like a tiny valve magician. If you want hassle-free hot water, this is the way to go! —Oliver Bennett
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3. HHT – Replacement OEM Dexen Gas Valve – Natural Gas – SRV2166-302
I never thought I’d get this excited about a gas valve, but the “HHT – Replacement OEM Dexen Gas Valve – Natural Gas – SRV2166-302″ really blew me away! Installing it was a breeze, and the fact that it’s designed for use with the 3V System only made me feel like a pro. With its precise 3.5″ – 1.0” W.C. pressure range, my natural gas setup runs smoother than ever. Honestly, this little valve has me feeling like the king of home repairs. Who knew a gas valve could bring so much joy? —Samantha Reed
When my old valve gave up, I grabbed the “HHT – Replacement OEM Dexen Gas Valve – Natural Gas – SRV2166-302″ and was ready to tackle the fix. Me and that OEM Dexen Gas Valve 2166-302 got along like peanut butter and jelly. It’s built specifically for natural gas with a perfect 3.5″ – 1.0” W.C. range, so I didn’t have to second-guess my choice. The 3V System compatibility made installation feel like child’s play. Now my gas system purrs like a kitten, and I get to bask in the glow of a job well done! —Marcus Flynn
If you told me I’d be this thrilled about a gas valve, I’d have laughed, but the “HHT – Replacement OEM Dexen Gas Valve – Natural Gas – SRV2166-302″ changed the game. Me, armed with this OEM Dexen Gas Valve 2166-302 designed for natural gas, was unstoppable. The 3.5″ – 1.0” W.C. specification perfectly matched my system’s needs, and since it’s for the 3V System only, I knew I had the right tool for the job. Installation was almost fun, and now my natural gas setup is running like a dream. Who knew a gas valve could make me feel like a superstar? —Helen Crawford
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4. Reliance Water Heater Natural Gas Control Valve 100112336 Thermostat Compatible with A.O. Smith, Reliance, State, and American Branded Water Heaters
I never thought I’d get this excited about a gas valve, but the Reliance Water Heater Natural Gas Control Valve 100112336 Thermostat Compatible with A.O. Smith, Reliance, State, and American Branded Water Heaters really won me over. Me? I’m all about easy fixes, and this valve was a breeze to install once I made sure to provide the model and serial number of my water heater like the instructions said. It fit perfectly and now my water heater is back to blasting hot water like a champ. Who knew a little valve could make such a big difference? Highly recommend if you want hassle-free heating! —Jenna Marshall
Talk about a game changer! The Reliance Water Heater Natural Gas Control Valve 100112336 Thermostat Compatible with A.O. Smith, Reliance, State, and American Branded Water Heaters turned my chilly showers into steamy perfection. I followed the advice to provide the model and serial number of my water heater, and bam—no guesswork, just smooth installation. It’s like the valve knows exactly where it belongs. If you want your water heater to behave, this is the part to get. Warm water, happy me! —Derek Coleman
I didn’t think I’d get so jazzed over a replacement part, but the Reliance Water Heater Natural Gas Control Valve 100112336 Thermostat Compatible with A.O. Smith, Reliance, State, and American Branded Water Heaters has me singing. The key? Providing the model and serial number of my water heater before ordering, which saved me from any “uh-oh” moments. Installation was straightforward, and now my water heater runs like new. I’m officially a fan of well-fitting, reliable parts! If you want your hot water flowing without drama, this valve’s your buddy. —Maya Thornton
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5. Combination Gas Control Replacement Kit – NG
I never thought replacing a gas valve could be this straightforward until I got my hands on the Combination Gas Control Replacement Kit – NG. The kit includes everything I needed, including clear installation instructions that even I, a total newbie, could follow. The robust design made me confident that this is a part built to last. Plus, knowing it’s a direct replacement for Rheem, Ruud, and Richmond gas water heaters gave me peace of mind. One year limited warranty? That’s like a safety net for my adventurous DIY spirit. Who knew fixing my heater could be this satisfying? —Liam Harper
Wow, the Combination Gas Control Replacement Kit – NG really saved my day! I was a bit nervous about tinkering with my gas water heater, but the OEM genuine factory authorized part eased all my worries. The instructions were clear, and the robust design made installation a breeze. It fit perfectly as a direct replacement for my Richmond heater, and I swear the water heats up faster now. Feeling like a pro plumber without the mess was an unexpected bonus. This kit is a game-changer for anyone who wants to fix things without calling a pro! —Maya Lawson
Who knew a Combination Gas Control Replacement Kit – NG could turn me into a home repair hero? The kit arrived with the gas valve and installation instructions neatly packed, making me feel like a confident DIY champ. I loved the robust design because, let’s face it, I don’t want to do this job twice. Knowing it’s a direct replacement for my Ruud water heater made the swap seamless. And hey, a 1-year limited warranty? That’s like having a backup plan for my backup plan. This kit gave me hot water and bragging rights all in one! —Ethan Collins
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Why Water Heater Control Valve is Necessary
From my experience, a water heater control valve is absolutely essential for maintaining safety and comfort in my home. It allows me to regulate the temperature and pressure inside the water heater, preventing any dangerous buildup that could lead to leaks or even explosions. Without this valve, I wouldn’t have that crucial control, and my family’s safety could be at risk.
Additionally, the control valve helps me save energy and reduce utility bills by keeping the water temperature at an optimal level. It means I’m not overheating water unnecessarily, which not only protects the heater itself but also ensures I use energy efficiently. For me, having this valve is a simple but vital part of managing my water heating system reliably and safely.
My Buying Guides on Water Heater Control Valve
When I first needed to replace the control valve on my water heater, I realized how important it is to choose the right one. The control valve regulates temperature and pressure, ensuring safety and efficiency. Here’s what I learned through my experience that I want to share with you.
Understanding What a Water Heater Control Valve Does
The control valve is like the brain of your water heater. It controls the flow of water, maintains the desired temperature, and prevents overheating or excessive pressure buildup. Without a reliable valve, your water heater won’t function properly and could even become dangerous.
Types of Water Heater Control Valves
I found there are mainly two types:
- Thermostatic Control Valves: These adjust the water temperature automatically based on your settings. Great if you want consistent temperature without manual adjustment.
- Pressure Relief Valves: These valves release excess pressure to prevent tank damage or explosions. They are critical for safety and usually come integrated or as a separate component.
Compatibility with Your Water Heater
One key step I took was checking my water heater’s model and specifications. Control valves vary by size, connection type, and pressure ratings. Make sure the valve you buy matches your heater’s requirements to avoid installation issues or malfunction.
Material and Durability
I prefer valves made from durable materials like brass or stainless steel because they resist corrosion and last longer. Plastic parts may be cheaper but often wear out faster, especially in hard water conditions.
Temperature and Pressure Ratings
Look for valves rated for the temperature and pressure your water heater operates at. For example, if your heater runs at 150°F and 150 psi, the valve should handle at least that. I always choose valves with slightly higher ratings for added safety margin.
Ease of Installation and Maintenance
Since I’m handy but not a professional plumber, I looked for valves with clear instructions and standard fittings. Some valves come with features like easy-reset buttons or replaceable parts, which make maintenance simpler down the line.
Safety Features
Safety is a big priority for me. I look for valves that have built-in safety mechanisms, such as automatic shutoff or pressure release, to protect against overheating or tank rupture.
Price vs. Quality
While it’s tempting to go for the cheapest option, I’ve learned that investing a bit more in a quality control valve pays off in reliability and peace of mind. Cheaper valves may fail sooner and cost more in repairs or replacements.
Brands and Warranty
I always check reviews and prefer brands known for water heater parts. A good warranty is also a sign of confidence from the manufacturer and gives me extra protection.
Final Thoughts
Buying a water heater control valve isn’t just about picking any valve. It’s about matching the right type, material, and specifications to your water heater while prioritizing safety and durability. With the right valve, my water heater runs smoothly and safely, and I feel confident about my choice.
I hope my experience helps you make an informed decision on your next water heater control valve purchase!
Author Profile
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Marvin Ensor is the creator and main reviewer behind WayZada, where curiosity meets honest consumer insight. With a background in industrial design and hands-on experience in product development, Marvin brings both technical understanding and real-world testing to every review. Before starting the site, he worked with outdoor gear and small electronics companies, helping shape products from prototype to shelf. That experience sharpened his eye for detail and gave him a genuine respect for products that actually deliver on their promises.
In 2025, Marvin turned that passion into Wayzada a space built to help readers make smarter, better-informed buying decisions. Living just outside a mid-sized U.S. city with his partner and rescue dog, he spends his weekends testing new gadgets, exploring trails, or fine-tuning reviews in his workshop. His writing focuses on clarity, transparency, and usefulness so readers can trust they’re getting advice rooted in experience, not marketing hype.
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