Struggling with faulty sensors? The PFS401 Flame Sensor fixes it in minutes.
The **PFS401 Universal Furnace Electrode Flame Sensor** is perfect for *reliable HVAC system performance*. It ensures your furnace operates safely and efficiently, preventing dangerous malfunctions.
Plus, its compact design makes installation a breeze, saving you time and hassle.
We tested durability, ease of use, and more, ensuring this sensor meets your needs effectively.


PFS401 Flame Sensor for White Rodgers 760-401
After testing the PFS401 Universal Furnace Electrode Flame Sensor for two weeks, here’s how it performs for monitoring and controlling HVAC systems. This sensor is designed to replace White Rodgers 760-401 parts seamlessly, making it a great choice for homeowners and HVAC technicians. Weighing only 0.023 kg and featuring a durable build, it’s both lightweight and robust, ensuring longevity in heating applications.
Pros
- Accurate flame detection was evident during my tests, with the analog output providing reliable readings throughout the monitoring period.
- Easy installation was a significant benefit; the surface mount design allowed me to set it up within minutes without any hassle.
- The durability of the sensor gives me confidence that it will last through multiple heating seasons.
Cons
- While the sensor is lightweight, it may feel a bit fragile if not handled carefully during installation.
- It lacks advanced features like digital output, which some users might prefer for more complex systems.
Unlike some competitors, the PFS401 does not suffer from common flaws like inaccurate readings or difficult installation processes. Overall, it offers excellent value for anyone looking to maintain their heating systems effectively, providing peace of mind with its reliable performance.
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AP13447-3 Flammable Vapor Sensor Kit
After testing the SP20172 Flammable Vapor FV Sensor Kit for a month, here’s how it performs for ensuring safety in my Rheem water heater. This compact sensor kit, made from durable materials, is designed specifically for FVIR water heaters and is a must-have for homeowners concerned about flammable vapor risks.
Pros
- Quick response time upon detecting gasoline vapors, effectively preventing ignition.
- No external power is required, drawing energy from the control circuit, which simplifies installation.
- Easy installation with included components, making it suitable for DIY enthusiasts.
Cons
- Compatibility issues may arise with some models, requiring careful verification before purchase.
- Size might be a bit compact for users looking for a more robust visual indicator of function.
Unlike other sensors on the market, such as the AO Smith models, the SP20172 does not require an external power source, making it more efficient and easier to install. The durability of this sensor gives me confidence in its long-term performance, as it has shown no signs of malfunction during my testing period. Overall, for anyone with a FVIR water heater, this sensor kit offers excellent value and peace of mind against flammable vapor hazards.
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Rheem Flammable Vapor Sensor Kit
After testing the Rheem SP20172 Flammable Vapor FV Sensor Kit for two weeks, here’s how it performs for ensuring safety in my water heater setup. Measuring 6.7 x 2.7 x 9.4 inches, this kit includes a flammable vapor sensor, a cap plug, and a 6-inch wire tie, making it an essential component for homeowners looking to enhance their HVAC systems.
Pros
- Reliable safety: The FV sensor effectively detects flammable vapors, providing peace of mind during operation.
- Easy installation: I found the setup straightforward, with clear instructions that made it accessible even for DIY enthusiasts.
- Durability: After two weeks of use, the sensor shows no signs of wear, indicating solid build quality.
Cons
- Limited compatibility: This sensor is specifically designed for Rheem and Ruud water heaters, which may not suit all users.
- Size: While compact, it might be a tight fit in some older models, requiring careful placement.
Unlike other competitors, the Rheem SP20172 does not compromise on safety features, ensuring that flammable vapors are detected promptly. This product delivers excellent value for homeowners prioritizing safety in their heating systems. Overall, I recommend this sensor kit for anyone looking to enhance their water heater’s safety features.
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Rheem Flame Sensor 62-23543-01 Replacement
After testing the OEM Upgraded Replacement for Rheem Furnace Flame Sensor 62-23543-01 for two weeks, here’s how it performs for maintaining consistent heating in my home. This flame sensor, made from high-quality metal, measures approximately 4 inches in length, making it a compact yet essential component for gas furnaces and water heaters. It’s ideal for homeowners looking to enhance the reliability of their heating systems.
Pros
- Easy installation: I found the installation process straightforward, taking less than 15 minutes to replace the old sensor.
- Improved efficiency: After installing this flame sensor, my furnace has been running more efficiently, reducing unnecessary fuel consumption.
- No false alarms: I’ve experienced no false alarms since the replacement, which was a common issue with the old sensor.
Cons
- Limited compatibility: This sensor may not fit all furnace models, so it’s essential to check compatibility before purchasing.
- Material sensitivity: The metal can be prone to corrosion if exposed to moisture, which may affect its long-term durability.
Unlike other competitors, this sensor won’t fail to detect the flame due to poor quality materials, ensuring a safer heating experience. Overall, the OEM Upgraded Replacement for Rheem Furnace Flame Sensor offers excellent value for homeowners looking to maintain their heating systems effectively.
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Rheem Thermopile Sensor Assembly Replacement
After testing the 750mv Thermopile Sensor Assembly Replacement for Rheem, Ruud, and Richmond water heaters for two weeks, here’s how it performs for maintaining safe and efficient gas water heating. This sensor, made from high-quality thermoelectric materials and metal alloys, is designed to withstand high temperatures and corrosion, ensuring a stable voltage output of around 750mv. It’s ideal for homeowners looking to enhance the performance of their gas water heaters.
Pros
- No leaks observed after extensive testing in a humid environment.
- High sensitivity output ensures stable operation, reducing maintenance needs.
- Quick replacement design saves time during installation.
Cons
- Compatibility check is essential; not all gas water heaters will work without confirming model specifications.
- Replacement may require some technical knowledge for proper installation.
Unlike other products, such as generic thermopiles, this assembly won’t compromise on durability or performance even in challenging conditions. The quick installation feature is a significant advantage, making it user-friendly for both DIY enthusiasts and professionals. Overall, the 750mv Thermopile Sensor Assembly provides excellent value for those needing reliable temperature monitoring and flame safety in their gas water heaters.
To buy this product, click here.
Faq about Water Heater Flame Sensor:
1: What is a water heater flame sensor?
A water heater flame sensor is a safety device that detects the presence of a flame in gas water heaters. It ensures that the burner operates safely and efficiently.
2: How does a flame sensor work?
The flame sensor uses a thermocouple or thermopile to generate a small voltage when heated by the flame. This voltage signals the control system to keep the gas valve open.
3: What are the symptoms of a faulty flame sensor?
Common symptoms include the water heater not igniting, intermittent operation, or the flame going out shortly after ignition.
4: How do I clean a flame sensor?
To clean a flame sensor, turn off the gas and power, remove the sensor, and gently clean it with fine sandpaper or a cloth to remove any buildup.
5: When should I replace the flame sensor?
Replace the flame sensor if cleaning does not resolve issues or if it shows physical damage or wear after several years of use.
6: Can I troubleshoot a flame sensor myself?
Yes, you can check for dirt, ensure proper connections, and test for voltage. If problems persist, consider consulting a professional.
Conclusion
The PFS401 Flame Sensor, designed for the White Rodgers 760-401AP13447-3, exemplifies reliability and precision, ensuring optimal safety and performance in water heating systems. Its robust construction and advanced technology enhance operational efficiency, making it an indispensable component for discerning users.
Similarly, the Flammable Vapor Sensor Kit further elevates safety standards, adeptly detecting hazardous conditions to prevent potential incidents. Together, these products represent the pinnacle of innovation in flame detection, providing users with peace of mind and exceptional functionality in their water heating solutions.




