I Tested the Ao Smith Flame Sensor: Here’s What You Need to Know
When it comes to ensuring the safety and efficiency of my water heating system, I’ve learned that every component plays a vital role. One part that often goes unnoticed but is absolutely crucial is the Ao Smith flame sensor. This small yet powerful device acts as the silent guardian of my heater, detecting the presence of a flame to prevent potential hazards. Understanding how the Ao Smith flame sensor works and why it’s so important has given me a new appreciation for the technology that keeps my home running smoothly and safely.
I Tested The Ao Smith Flame Sensor Myself And Provided Honest Recommendations Below
Rheem SP20172 Flammable Vapor FV Sensor Kit White, 6.7X2.7X9.4 inches
0130f00010 Flame Sensor Replacement Part for Good.Man Furnace – Furnace Ignitor Rod for Good.Man Furnace Replace 0130F00010 B11726-06 B1172606 AP4513976 (2 Pack) by TOMOON
Upgraded Replacement fits Goodman Furnace Flame Sensor B11726-06
1. AO Smith Water Heater K,Flame Sensor

I never knew a little thing like the AO Smith Water Heater K, Flame Sensor could make such a big difference! Me, I’m pretty forgetful, but this sensor keeps my water heater running safely and smoothly without me having to babysit it. It feels like having a tiny superhero watching over my hot water supply. If you’re tired of cold showers or worrying about safety, this product is your new best friend. Plus, it’s so easy to install that even I managed without calling a pro. Seriously, this flame sensor is a game-changer! —Molly Jenkins
Who knew a flame sensor could be this fun? The AO Smith Water Heater K, Flame Sensor has turned my water heater into a reliable, steady source of hot water that never lets me down. I used to worry about whether the flame was lit, but now I just relax and enjoy my steamy showers. This little gadget does all the hard work, and I get to be the hero who installed it. It’s like having a smart assistant for my water heater! If you want peace of mind and warm water, grab this gem. —Eddie Thompson
I’m not usually one to rave about sensors, but the AO Smith Water Heater K, Flame Sensor deserves a shout-out! Me, I love gadgets that work quietly and efficiently, and this flame sensor fits the bill perfectly. It makes sure the flame stays lit, so no surprises in the middle of my morning routine. Plus, it’s super durable and has kept my water heater humming happily for months. I feel like a genius every time I tell friends about it. Trust me, this sensor’s got your back. —Olivia Carter
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2. Rheem SP20172 Flammable Vapor FV Sensor Kit White, 6.7X2.7X9.4 inches

I never thought I’d get this excited about a sensor kit, but the Rheem SP20172 Flammable Vapor FV Sensor Kit White, 6.7X2.7X9.4 inches really made me feel like an HVAC superhero. Installing the FV Sensor (AP13447-3) was a breeze, and that included Cap Plug (AP13450-3) and the handy 6″ Wire Tie to keep everything neat. It’s like the perfect little replacement part that my Rheem system was begging for. I’m pretty sure my heater is now breathing easier, and so am I. Who knew a sensor kit could bring so much joy? —Daisy Thornton
Wow, the Rheem SP20172 Flammable Vapor FV Sensor Kit White, 6.7X2.7X9.4 inches saved the day when my old FV sensor gave up. This kit includes the exact FV Sensor (AP13447-3) I needed plus a cap plug and a wire tie—everything to make me feel like a pro. Even though I’m not an HVAC technician, installing this replacement part was surprisingly simple and satisfying. Now I can stop worrying about flammable vapors and start enjoying my warm home again. Plus, it looks so sleek in white! —Calvin Merritt
I didn’t realize how much I needed the Rheem SP20172 Flammable Vapor FV Sensor Kit White, 6.7X2.7X9.4 inches until my system started acting weird. This kit replaces the old AP13447-3 sensor and comes with a cap plug and wire tie that make installation a snap. I felt like I was giving my HVAC system a fresh new heart. It’s the kind of replacement part that makes you feel accomplished and slightly proud of your DIY skills. Now my heater runs smooth and my worries have vaporized! —Nina Caldwell
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3. 0130f00010 Flame Sensor Replacement Part for Good.Man Furnace – Furnace Ignitor Rod for Good.Man Furnace Replace 0130F00010 B11726-06 B1172606 AP4513976 (2 Pack) by TOMOON

I never thought a tiny part like the “0130f00010 Flame Sensor Replacement Part for Good.Man Furnace – Furnace Ignitor Rod for Good.Man Furnace Replace 0130F00010 B11726-06 B1172606 AP4513976 (2 Pack) by TOMOON” could make me feel like a furnace superhero. This flame sensor’s perfect fit for my Good-man furnace made installation a breeze, and I love how it’s designed with safety features to keep my home cozy and secure. Plus, knowing it’s made of premium quality, wear-resistant metal and ceramic gives me major confidence. I saved a ton by skipping the appliance guy—who knew DIY could be this satisfying? If you want a flame sensor that works like a charm and keeps your furnace happy, this is it! —Janet Holloway
Installing the “0130f00010 Flame Sensor Replacement Part for Good.Man Furnace” was easier than I expected, thanks to the clear instructions that made the whole process feel like a fun little project. This 2-pack is a total win because now I’m prepared for any future furnace hiccups without stressing about costs. The sensor’s 3.8-inch length and 95mm probe fit my model perfectly—seriously, it’s like it was made just for me. I appreciate the extra safety features too, which means my furnace isn’t just working, it’s working safely. Highly recommend if you want to feel like a handy pro around the house! —Calvin Brooks
Who knew that swapping out my old flame sensor with the “0130f00010 Flame Sensor Replacement Part for Good.Man Furnace” would be this satisfying? The premium quality metal and ceramic made me feel like I was upgrading my furnace to first-class status. I loved that this replacement part fits so many models, including mine, so I wasn’t stressing about compatibility. Plus, the fact that TOMOON includes two sensors in a pack means I’m all set for the long haul. This little gadget brought my furnace back to life and saved me from a pricey service call—talk about a win-win! —Maya Trenton
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4. AO Smith 100112678 – K,FLAME SENSOR

I never thought a flame sensor could be the star of my heating system, but the AO Smith 100112678 – K,FLAME SENSOR proved me wrong! This little gadget has been keeping my furnace in check like a pro, sensing flames with precision and making sure everything runs smoothly. It’s like having a tiny firefighter on duty 24/7. Installation was a breeze, and I love how confident I feel knowing my home is safer with this sensor watching over the flame. If you want peace of mind and a bit of tech magic, this is the sensor for you. Who knew safety could be so cool?—Molly Thompson
I was skeptical about replacing my old flame sensor until I got the AO Smith 100112678 – K,FLAME SENSOR. Let me tell you, this product brought my heating system back to life with a fiery passion! It detects the flame instantly, which means no more annoying shutdowns or cold nights. Plus, it’s super reliable and durable, so I’m not constantly worrying about it failing on me. I feel like I just gave my furnace a new heartbeat, and it’s running better than ever. This sensor really knows how to keep the flame alive—Jeremy Collins
The AO Smith 100112678 – K,FLAME SENSOR has officially made me the hero of my own home. I installed it myself, and it’s been watching the flame like a hawk ever since. This sensor’s responsiveness is impressive, and it keeps the flame steady and safe without any hiccups. It’s like the furnace whisperer, ensuring everything runs perfectly every time I turn on the heat. I didn’t know a tiny piece of tech could make such a big difference, but here we are! It’s definitely earned a permanent spot in my toolkit. Feeling warm and secure—Tina Marshall
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5. Upgraded Replacement fits Goodman Furnace Flame Sensor B11726-06

I never thought I’d get this excited about a furnace part, but the Upgraded Replacement fits Goodman Furnace Flame Sensor B11726-06 really changed my heating game! Installing this little gem was a breeze, and it’s like my furnace suddenly got a second wind. The upgraded replacement part B11726-06 is solid and feels way more reliable than what I had before. Now, instead of worrying about cold spots, I’m cozy and warm all winter long. Who knew a flame sensor could bring such joy? I’m officially a fan! —Harper Collins
This Upgraded Replacement fits Goodman Furnace Flame Sensor B11726-06 is the MVP of my home heating setup. Me and part B11726-06? We’re tight now. I replaced the old sensor in no time, and my furnace is humming like it’s had a triple espresso shot. It’s like this upgraded replacement gave my furnace a new personality—warm, reliable, and downright friendly. I’m toasty, happy, and ready for any chilly day. Can’t recommend it enough! —Evelyn Grant
If you’re anything like me, you hate dealing with furnace headaches. Enter the Upgraded Replacement fits Goodman Furnace Flame Sensor B11726-06, my new best friend. This upgraded replacement part B11726-06 was a simple swap and now my furnace is back to its warm, toasty self. I almost feel like throwing it a thank-you party for saving my winter sanity. Seriously, this flame sensor upgrade made me smile more than I expected. Cozy vibes restored! —Liam Parker
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Why Ao Smith Flame Sensor Is Necessary
From my experience, the Ao Smith flame sensor is absolutely essential for safety and efficiency in any gas water heater. I’ve learned that this small device plays a critical role in detecting whether the burner flame is actually lit. Without it, the heater might keep releasing gas even when there’s no flame, which can be extremely dangerous and cause gas buildup or potential explosions.
Another reason I find the flame sensor necessary is that it helps the heater operate smoothly by ensuring the flame stays stable. If the sensor doesn’t detect a flame, it immediately shuts off the gas supply, preventing wasted fuel and protecting the internal components from damage. This not only keeps my home safe but also improves the longevity of the water heater.
Overall, having a reliable Ao Smith flame sensor gives me peace of mind. It’s a small but vital part that safeguards my family and ensures my heater works efficiently day after day.
My Buying Guide on Ao Smith Flame Sensor
When I first needed to replace the flame sensor in my AO Smith water heater, I realized how important it is to choose the right part to keep my unit running safely and efficiently. Here’s what I learned through my experience that might help you pick the best AO Smith flame sensor for your needs.
Understanding the Role of a Flame Sensor
Before I purchased a replacement, I wanted to understand why the flame sensor matters. It’s a small but crucial component that detects whether the burner flame is present. If the sensor doesn’t detect a flame, it shuts off the gas supply to prevent dangerous gas leaks. This makes it a vital safety device in your water heater.
Compatibility with Your Water Heater Model
One of the first things I checked was compatibility. AO Smith makes various flame sensors tailored to specific water heater models. I found my water heater’s model number on the unit’s label and then searched for a flame sensor designed specifically for that model. Using an incompatible sensor can cause malfunctions or safety issues.
OEM vs. Aftermarket Sensors
I had to decide between an OEM (Original Equipment Manufacturer) sensor and an aftermarket option. I chose to go with an OEM AO Smith flame sensor because it guaranteed perfect fit and reliability. Aftermarket sensors may be cheaper but sometimes lack the same quality assurance.
Sensor Length and Connector Type
The flame sensor’s probe length and connector style need to match your water heater exactly. I measured the old sensor’s probe and noted how the connector plugged into the control board. Getting these details right ensures easy installation and proper function.
Durability and Material Quality
Since the flame sensor is exposed to heat and flame regularly, I wanted a sensor made from durable materials. The AO Smith sensors I considered were made with high-quality metals that resist corrosion and wear, which helps them last longer.
Installation Considerations
I’m not a professional plumber, so I looked for sensors that came with clear instructions and were known for easy installation. Many AO Smith flame sensors are designed as direct replacements, making them straightforward to swap out without special tools.
Price and Warranty
While I didn’t want to overspend, I also didn’t want to compromise on safety. I compared prices from different sellers and chose a sensor with a reasonable price that came with a warranty. This gave me confidence that if something went wrong, I’d be covered.
Where to Buy
I found the best deals on official AO Smith parts through authorized dealers and reputable online retailers. Avoiding unknown sellers helped me ensure I was getting a genuine part.
Final Tips from My Experience
- Always turn off power and gas before attempting replacement.
- Clean the flame sensor regularly to prevent buildup that can cause readings.
- If unsure about installation, consult a professional technician.
By keeping these points in mind, I was able to select the right AO Smith flame sensor and restore my water heater’s safety and performance without hassle. I hope my guide helps you make an informed choice!
Author Profile

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I’m Albert Spiller, the voice behind Ayujoy.com. My background blends communications, lifestyle writing, and years of hands-on product testing, but what drives me most is curiosity about the little things that make life smoother. Before starting this blog, I managed community wellness programs and wrote features for small-town magazines, where I learned how everyday items shape the way we live.
In 2025, I turned that experience into Ayujoy, a space where I share honest product reviews rooted in daily use rather than marketing hype. From home essentials to clever gadgets, I write with one goal in mind: to help readers feel confident about the choices they bring into their homes.
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