Our Flame Sensor for Heater guide compares 10 replacement options by fit, durability, installation ease, and suitability for common gas furnace brands and
A flame sensor for a heater is a small but safety-critical component in many gas-fired systems. It confirms that the burner has established a flame and helps the control system stop the ignition process safely. Choosing the right replacement requires matching the furnace brand, model, original part number, connector style, and sensor geometry rather than relying on a broad product description.
This guide compares ten replacement sensors across Goodman, Amana, Kenmore, Rheem, Ruud, Weatherking, Trane, American Standard, York, White-Rodgers, and Protech-compatible applications. The evaluation emphasizes documented part numbers, physical specifications, material claims, installation considerations, and the problems each product is designed to address. Ratings are included for reference, while fit remains the decisive purchasing factor.
Each section explains the standout benefits, limitations, and likely buyer for one listed product, from compact OEM-style replacements to multipacks and a universal White-Rodgers model. The top picks highlight three different purchasing priorities: broad documented compatibility, a straightforward OEM-style Rheem replacement, and a feature-rich universal option. Product prices and availability can change, so compare the current listing and your furnace documentation before ordering.
4.7Editor score
4.5Editor score
4.6Editor score
The table below puts the ten candidates side by side, emphasizing documented part numbers, system applications, physical dimensions, and configuration details. Use it to narrow the field quickly, then confirm that the replacement matches the part number and connector arrangement listed in your furnace manual or on the failed component.
This three-pack targets the 0130F00010 and B11726-06 flame-sensor family used with many Goodman, Amana, and Kenmore gas furnaces. Its 4.5 rating reflects generally favorable customer feedback, while the strongest feature is the unusually long list of documented replacement numbers and model references. That makes it a useful starting point when the failed sensor carries one of several interchangeable identifiers.
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Compatibility is the central benefit. The listing cross-references B1172606, 20488501, ACS90453BXA, P1257001F, P1257007F, ACS90703BXA, P1257002F, P1257008F, AP4513976, and L38035. It also names multiple GMS, GDS, GMSS, and GCSS series. The sensor is described as using wear-resistant metal and ceramic materials intended to withstand furnace conditions while providing a stable flame signal.
There are two trade-offs. A three-pack may be unnecessary if only one component has failed, although keeping a spare can be practical for an older or heavily used furnace. The product copy also refers to an upgraded igniter in places, even though the item is presented as a flame sensor. Buyers should therefore rely on the part number, dimensions, and furnace documentation rather than the mixed terminology.
This is a strong choice for a homeowner who has identified 0130F00010 or B11726-06 on the existing sensor and wants coverage across a broad set of compatible brands and model series. Confirm the part number, connector, bend angle, and physical dimensions before ordering. If those details match, the three-pack offers convenient replacement availability and a useful backup for future service needs.
The extensive cross-reference list can help translate an unfamiliar number printed on the old sensor into the correct product family. Still, the furnace manual remains the authority, and visually comparing the bracket, rod, and terminal is a sensible final check.
Three units can be useful when maintaining an aging system or replacing more than one matching component. If your furnace uses only one sensor and you prefer to minimize unused parts, the single-unit Goodman alternatives in this guide may be more convenient.
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This replacement is built around one straightforward fact: it is intended to replace Rheem appliance part 62-23543-01. The product description is brief, but that specificity can be an advantage when the number on your failed component matches exactly. Its 4.7 rating is among the highest in this group and makes it a compelling straightforward selection for verified Rheem installations.
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The product is positioned as an OEM-style upgraded replacement in the original version. That language should not be taken to mean the seller manufactured the original Rheem component, but it does indicate that the listing is intended to mirror the correct replacement format rather than offer a general-purpose substitute. It is particularly relevant to furnaces using the 62-23543-01 sensor and related sensor arrangements used across Rheem equipment.
The main limitation is the lack of detail. The supplied listing does not list dimensions, bend angle, connector style, material composition, or a wide set of cross-referenced part numbers. That makes the listing less helpful if you do not yet know which sensor your system requires. It also provides less information for a DIY buyer trying to distinguish a 62-23543-01 from nearby part numbers.
Choose this option when your furnace documentation or the old sensor clearly identifies 62-23543-01. Its focused compatibility, favorable rating, and uncomplicated format make it a sensible budget-oriented purchase. Before installing, compare the full shape and electrical connection with the original part and follow the safety steps required for gas appliances.
A direct number match removes much of the guesswork associated with universal-looking sensor listings. If the original component is labeled 62-23543-01 and the geometry matches, this focused replacement is easier to evaluate than a broader option.
The concise description does not provide the detailed measurements found on some competing listings. Buyers should compare the old sensor and furnace manual rather than assuming every sensor sold for the same brand has identical geometry.
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Marketed as a genuine OEM Rheem furnace burner flame sensor, this option is designed as an exact-fit replacement for part 62-23543-01. It carries a 4.6 rating and presents a more brand-specific alternative to the other Rheem candidates. That distinction matters to buyers who want the closest available replacement configuration rather than a generalized aftermarket part.
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The listing describes durable, wear-resistant metal and highlights the sensor's safety function: it detects the presence of a flame, and if no flame is detected, the associated system can shut off the gas valve. That prevents unprocessed gas from continuing to flow. It also identifies the issue of a furnace that does not heat, making the product's role easier for first-time replacement buyers to understand.
Although the title says exact fit, the limited supplied information does not provide detailed measurements or a broad set of equivalent part numbers. An OEM designation can also refer to an original-equipment-style item rather than guaranteeing that every dimension is visibly identical. Buyers should still inspect the mounting base, rod direction, length, and terminal before purchasing.
This is an attractive option for a Rheem furnace that uses 62-23543-01 and for buyers who prioritize OEM positioning. It is also a practical alternative to the similarly named OEM-style product at number two, particularly for those who prefer the more explicit genuine-OEM language. Confirm the part number and physical configuration, and use qualified assistance if you are uncertain about working on a gas-fired appliance.
For a verified Rheem application, an OEM replacement is generally less ambiguous than a generic sensor marketed only by brand name. The original manufacturer still provides the most authoritative confirmation of fit.
The sensor supports the control system by confirming ignition. When it cannot detect a flame, the system can shut down the gas valve, making reliable sensing essential to safe operation and effective heat delivery.
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This flame sensor targets SEN01114 and several related identifiers used with Trane and American Standard residential furnaces. Its 4.6 rating and unusually clear list of compatible part numbers make it one of the most useful options for owners who recognize the common SEN-series naming system. It is expressly described as a direct replacement for many compatible residential furnace models.
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The documented references include SEN337, SEN0337, SEN441, SEN0441, SEN491, SEN00491, SEN1114, SEN01114, PSE-T19, and B340888-2. This breadth is helpful because labels can vary between manufacturers, service literature, and older units. The manufacturer also states that the replacement is made from durable material and tested before sale, while recommending consultation of the machine manual before ordering.
A notable limitation is that the listing does not provide rod length, offset, bend angle, or terminal measurements. Those details matter because sensors in the same family may not share exactly the same physical layout. The direct-replacement claim should therefore be validated by matching the complete sensor and the manufacturer documentation, not simply the brand printed on the furnace.
This product is a good fit for a Trane or American Standard furnace whose existing sensor carries one of the listed SEN or PSE numbers. Its combination of documented cross-references, direct-replacement positioning, and a solid rating makes it one of the strongest non-OEM options in the roundup. Verify the part number and geometry first, and avoid ordering based solely on the furnace brand.
The range of listed identifiers helps connect several markings that may refer to the same sensor family. It reduces uncertainty when the information on the old component is difficult to read or differs from the number in a service manual.
Even within one manufacturer's product line, a furnace can use sensors with different dimensions or connector arrangements. Treat the detailed part-number list as a useful guide and the furnace manual as the final authority.
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This three-pack from TOMOON centers on the 62-23543-01 sensor rod used in gas HVAC systems. It is described as fitting Rheem, Ruud, and Weatherking residential furnaces, making it broader in application language than the other 62-23543-01 options. Its 4.6 rating indicates solid customer feedback, while the inclusion of three units provides a practical reserve for maintenance work.
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One of the strongest elements is the level of installation-oriented detail. The listing specifies a quarter-inch male quick-connect termination, a 90-degree sensor offset, wear-resistant metal and ceramic construction, and a process of repeated testing. It also explains that the sensor detects burner ignition and signals the control board to stop the igniter, clarifying how the part fits into the ignition sequence.
The copy includes an important safety note: disconnect electrical power and shut off the gas supply before installation, and wear work gloves. It also advises contacting the seller if model compatibility is uncertain. The product title and description sometimes split brand names in unusual ways, and the listed compatibility should be interpreted as guidance rather than a substitute for checking the furnace manual and the original sensor.
This option suits a technician or homeowner who has confirmed 62-23543-01, wants the specified 90-degree offset and quarter-inch male connection, and prefers to keep matching spares. If only one replacement is needed, a single-unit version may be more practical. Otherwise, the documented geometry makes this a more informative listing than many of the other compact replacements.
The stated 90-degree offset and quarter-inch male quick connection give buyers useful points of comparison. A part may carry the right number yet still have a different bend or termination in some listings, so match both features.
The installation notes appropriately call for electrical disconnection, closure of the gas supply, and protective gloves. Those steps should be completed before opening the burner compartment or handling the old sensor.
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This single sensor is an option for owners replacing 0130F00010 or B11726-06 in compatible Goodman, Amana, Kenmore, Janitrol, and Daikin systems. It holds a 4.6 rating and distinguishes itself through unusually concrete measurements. For a component whose shape can be difficult to judge from a photograph, a stated overall length, rod drop, and mounting-base size can make comparison much easier.
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The listed dimensions are 3.8 inches overall, 2.5 inches for the rod drop below the bracket, and 1.3 inches for the mounting base. The rod is described as high-grade stainless steel with resistance up to 1800°F, paired with an alumina ceramic porcelain insulator intended to reduce grounding and crack-related failures. The extensive cross-reference list also includes the 0130F00010 family, ACS numbers, P125700-series numbers, 20488501, and L38035.
The marketing copy is unusually dense and occasionally uses terms inconsistently, including references to a propane furnace flame kit, a targeted gas detector tool, and avoided technician fees. Those expressions should not be read as verified claims about every furnace configuration. The physical measurements and part numbers are more useful than the promotional framing, and the original component should still be compared directly.
This is a strong candidate for a single replacement when your failed sensor is 0130F00010, B11726-06, or a listed equivalent and the stated dimensions align. It combines broad application information with a single-unit format that avoids unnecessary surplus. Confirm all measurements, follow the stated power and gas shutdown precautions, and seek professional service if the fault continues after a proper installation.
The 3.8-inch overall length, 2.5-inch drop, and 1.3-inch base provide a practical way to check fit. These dimensions are particularly useful when the old sensor's part number is worn or difficult to read.
The stated stainless sensing rod and ceramic porcelain insulator target the harsh environment around a burner. Material choice is valuable, but correct placement and installation remain essential for reliable flame detection.
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This replacement is aimed at York heating systems using part 025-37499-000. Its 4.6 rating and exact-fit positioning give it a clear identity within a roundup otherwise dominated by Goodman and Rheem options. It is most appropriate for a buyer who can positively identify the failed sensor by part number or confirm that exact number in the furnace documentation.
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The product description highlights durable, wear-resistant metal and explains the central operating principle. The sensor detects whether a flame is present; if it does not, the gas valve can be shut off, helping prevent unprocessed gas from entering the home. It also identifies failure to heat as a symptom that a defective flame sensor may help explain.
As with several focused OEM-style listings, the provided information is limited. There are no rod dimensions, bend angle, connector details, material grades, or additional cross-referenced numbers in the supplied description. The exact-fit claim therefore depends heavily on the buyer matching the correct part. It is not appropriate to assume that every sensor used in a York furnace shares the same dimensions.
For a York furnace with a confirmed 025-37499-000 sensor, this is a focused and practical replacement. It may appeal to someone who prefers a direct part-number purchase over a universal product. Before ordering, compare the old component's mounting base, rod orientation, length, and terminal, and follow the equipment manufacturer's safety and diagnostic guidance.
The product is most compelling when the number on the existing component is clear. A verified match reduces the risk of choosing a sensor with an incompatible bracket, rod, or electrical connection.
A furnace that does not heat can have several causes, including ignition, gas-valve, wiring, or control-board problems. Replacing the sensor is sensible when it is damaged or when testing points to flame-detection failure.
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The White-Rodgers 760-401 stands apart as a universal-fit flame sensor designed for hot-surface ignition systems. Its 4.6 rating and detailed specifications make it a strong choice for a user who needs more installation flexibility than a standard direct-match replacement provides. It can be mounted remotely or used with multiple burners, which is valuable in systems where a fixed sensor position is impractical.
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The long electrical lead is a defining feature. At 30 inches, it provides additional reach between the sensor and its connection point. The rod is made from Kanthal high-temperature material and is stated to withstand temperatures up to 1800°F. The electrical connection uses a quarter-inch female spade terminal, while the universal-fit classification allows more varied mounting than a narrow OEM configuration.
The tradeoff is cost. This option is more expensive than the other products in the guide, and a universal sensor still needs proper positioning relative to the flame. Incorrect placement can limit sensing even when the electrical connection works. The bracket, bend, and mounting method must suit the burner assembly, and the long lead must be routed without creating heat damage or a mechanical hazard.
This is the premium pick for a hot-surface ignition system with unusual mounting requirements, a remote sensor location, or multiple-burner considerations. It may also be valuable when no exact replacement part can be confidently located. Confirm that the burner can accommodate a remotely mounted sensor and that the 760-401's rod and terminal are suitable for the system.
Remote or multiple-burner use gives this sensor an advantage over many compact, fixed-shape replacements. That flexibility can make it easier to place the sensing rod where it can reliably detect the flame.
Even a universal sensor must be correctly shaped, secured, and positioned near the target flame. Review the system's hot-surface ignition requirements and follow the manufacturer's mounting instructions rather than relying on fit alone.
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The Protech 62-23543-02 is a replacement flame sensor distinguished by clear physical specifications and a 4.7 rating. It is intended for the 62-23543-02 part, a number that deserves careful attention because several Rheem-related sensors in the guide use 62-23543-01. The distinction is a reminder that nearly identical part numbers do not always represent interchangeable geometry.
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The listing gives a quarter-inch male quick-connect termination, a 2.5-inch length from the mounting flange to the sensor tip, a 1-9/16-inch sensor offset, and a 90-degree offset angle. These are highly useful specs for a buyer comparing a replacement with the installed component. The 90-degree geometry and male quick connection can be checked visually without relying on ambiguous marketing language.
The limited information does not provide a broad cross-reference list or identify a wide range of compatible furnace models. That makes the product less helpful if the failed sensor's number is missing. It is also important not to assume that 62-23543-02 and 62-23543-01 are interchangeable merely because the numbers look related. Compare length, offset, angle, and termination.
This sensor is a good choice when the original component is explicitly marked 62-23543-02 and its stated measurements match. The combination of a favorable rating and precise dimensions gives it an advantage over listings that offer little beyond a brand name. Use the exact part number and the appliance documentation as your purchase criteria.
The 2.5-inch mounting length, 1-9/16-inch offset, and 90-degree angle allow a direct comparison with the old component. These visible measurements are often more dependable than a generic claim of universal or exact fit.
A trailing digit change can affect dimensions and connections even when the broader number family is similar. Confirm 62-23543-02 rather than selecting 62-23543-01 solely because both are associated with a familiar brand.
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This single-unit sensor targets 0130F00010, B11726-06, and several related identifiers used with Goodman, Kenmore, and Amana gas furnaces. Its 4.6 rating supports a favorable overall impression, while the documented 3.8-inch overall length and 95-millimeter probe provide concrete points for comparison. It is a logical single-unit alternative to the three-pack at the top of the list.
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The compatibility information is broad. Listed replacements include 0130F00010, B11726-06, B1172606, 20488501, ACS90453BXA, P1257001F, P1257007F, ACS90703BXA, P1257002F, and P1257008F. The description also names GDS, GMS, GMSS, and GCSS model series. According to the listing, the sensor uses wear-resistant metal and ceramic components designed for reliable flame detection in gas furnaces.
Much of the copy is written in highly promotional language, including claims about operating over 100,000 heating cycles, extending lifespan by two or three times, achieving faster ignition, and serving more than 10,000 households. These are seller claims rather than independently established test results, so they should not be treated as proof of performance. The practical dimensions, part numbers, and application information are the most useful buying details.
This product is well suited to a Goodman-family furnace with a confirmed 0130F00010-style sensor, especially when the old component measures 3.8 inches overall and has the expected 95-millimeter probe. It also provides clear safety guidance to disconnect power, close the gas supply, and wear gloves. Confirm those details and seek professional help if the diagnosis is uncertain.
The stated overall and probe lengths help distinguish the sensor from visually similar components. A ruler comparison at the removed part can prevent an otherwise costly geometry mistake.
Cycle-life and performance statements in marketplace descriptions are not the same as standardized testing. Prioritize exact fit, safe installation, and reliable flame detection over dramatic comparative wording.
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A flame sensor is not a universal plug-in component, even when several brands use similar language. The safest purchasing process is to identify the furnace manufacturer and model, locate the original part number, compare the physical geometry and electrical connection, and confirm that the replacement is approved for the specific ignition system.
Begin with the brand and complete model number printed on the furnace data plate. This information tells you which ignition architecture and service documentation apply and helps you distinguish a furnace that merely shares a brand with the replacement. Generic descriptions such as fits Goodman or works with Rheem are not enough on their own, because a manufacturer may use different sensors across model lines and production years.
Use the model number to look up the parts diagram or maintenance guide. Compare that information with the seller listing and the physical component in the burner compartment. If the documentation conflicts with a marketplace claim, prioritize the equipment manual and the part number physically attached to the failed sensor.
Part numbers are more reliable than brand names because they encode the intended component and its revisions. Search the printed identifier in the furnace manual, parts list, or manufacturer's support materials. Pay close attention to suffixes and leading zeros, because small differences can identify a sensor with another length, angle, or terminal.
A seller may list several valid interchangeable numbers, but you should confirm that the current item is the one you need rather than assuming the entire list applies to every configuration. Keep the original number visible during the search and compare it character by character with the listing.
Flame sensors can look similar while differing in rod length, mounting-base size, bend direction, offset, and tip position. Measure the old sensor before removal if possible, and compare overall length, flange-to-tip length, rod offset, and bend angle. The dimensional details provided by products such as the 3.8-inch Goodman replacements, the 2.5-inch Protech sensor, and the 90-degree TOMOON and Protech options are especially useful for this check.
The sensing rod must also be able to occupy the intended position near the burner flame without touching a surface that could damage it. A sensor that cannot be installed in the same geometry may not detect the flame reliably even if it appears to fit.
The electrical connection must match the furnace wiring. Several products in this guide specify a quarter-inch male quick connect, while the White-Rodgers 760-401 uses a quarter-inch female spade terminal. A sensor with the wrong connector may require avoidable adaptation or may not connect correctly.
Inspect the old terminal without forcing it, and compare the connector type, orientation, and wire arrangement with the replacement. If the existing component has been modified, the wiring may no longer reflect the original design, so check the furnace manual and wiring diagram before proceeding.
Not every furnace uses the same flame-detection arrangement. Conventional ignition systems, hot-surface ignition systems, and systems with remotely mounted or multiple-burner sensors can have different requirements. The White-Rodgers 760-401 is specifically listed for hot-surface ignition systems and offers remote or multiple-burner mounting, which makes it a different proposition from compact, directly mounted OEM-style sensors.
Confirm the control system and burner design before choosing a replacement. A replacement should suit the way the furnace establishes and verifies a flame, not merely share a similar appearance with the old component.
The sensing rod and insulating materials must tolerate the heat around a burner. Several listings describe stainless steel, Kanthal, or wear-resistant metal and ceramic construction, while some state resistance up to 1800°F. These details are useful indicators of suitability, but they are still seller-provided specifications unless independently documented.
Prefer a replacement that describes both the sensing material and its insulating structure. Also consider whether the design provides a stable electrical signal and resists contamination, corrosion, or cracking. Good materials cannot compensate for incorrect placement or installation.
A single sensor is usually the most direct replacement for a single failed component. Multipacks can be attractive for older systems, rental properties, maintenance kits, or households that want a matching spare, but they also add cost and create more unused inventory. Evaluate the number of sensors your furnace actually uses and how likely you are to need another matching unit.
For a single-unit repair, the Rheem, Trane, York, Protech, and single Goodman options are straightforward. The Goodman and TOMOON three-packs are more compelling when maintaining several compatible systems or preparing for a foreseeable future replacement.
Seller support can be valuable when part numbers or specifications are confusing. Some listings offer help with compatibility, and one Goodman option states that customers can provide their furnace model for confirmation. Before ordering, ask the seller to compare the requested part number, dimensions, and connector against the furnace model, and keep that correspondence for reference.
Review the listing's return terms, included hardware, and stated warranty as well. Replacement parts may be difficult to return after installation, so resolving fit questions before ordering is especially important. A supportive seller should be able to answer concrete model and measurement questions without asking you to guess.
Before beginning, identify the correct replacement and confirm that your furnace is safe to inspect. Read the appliance manual, note the part number, and compare the new sensor with the old one. A functioning replacement is installed only after the control system is in the correct state and the burner compartment is safe to access.
Disconnect electrical power to the furnace and close the gas supply valve before handling components. Allow the area to cool as directed by the manufacturer, wear protective gloves, and keep tools and loose parts away from the burner opening. Remove the old sensor according to the service procedure, avoiding abrupt bending or contact with ceramic and ignition parts.
Install the new sensor using the specified mounting position, orientation, and electrical connection. Restore power and the gas supply only after confirming that the assembly is secure, the wiring is correct, and no tools are left in the compartment. If the furnace still short-cycles, does not heat, or displays a flame-sensing code, stop and have the system inspected rather than repeatedly forcing ignition.
A flame sensor confirms that the burner has produced a flame and sends a signal to the control system. If it does not detect a flame, the system can shut off the gas valve, helping prevent unprocessed gas from continuing to flow. A dirty, damaged, or poorly positioned sensor can therefore interrupt heating even when other ignition components are working.
Only when the part number, dimensions, bend angle, mounting method, connector, and electrical requirements are explicitly compatible. Different brands can use sensors that look similar but are not interchangeable, and aftermarket listings may combine accurate and incomplete cross-references. Always compare the replacement with the furnace documentation and the original component.
Look for a stamped, printed, or tagged number on the old flame sensor and record it exactly. Then search that number in the furnace parts list or manufacturer support documentation. If the number is unreadable, provide the complete furnace brand and model to a reputable service provider or seller who can identify the correct sensor.
They are closely related part numbers but should not be assumed to be interchangeable without verification. The Protech 62-23543-02 listing specifies a quarter-inch male quick-connect termination, 2.5-inch mounting length, 1-9/16-inch offset, and 90-degree angle. Compare every relevant dimension and connection with the failed sensor before choosing.
A universal sensor still has to fit the available mounting location, maintain the correct relationship to the flame, and connect to the control system correctly. Long leads and adjustable mounting can help with unusual arrangements, but incorrect positioning may prevent reliable detection. Specialized OEM-style sensors are often easier to judge when the exact part number is known.
A quick start followed by shutdown can be caused by a failed flame sensor, but it can also result from other ignition, gas, airflow, wiring, or control problems. Inspect the sensor for visible damage or contamination and verify the fault through the furnace's diagnostic process. Replacing the sensor without establishing the cause may not solve the issue.
Disconnect electrical power and shut off the gas supply before opening the burner compartment or handling the sensor. Follow the manufacturer's service procedure, use protective gloves, and allow hot components to cool as directed. If you are not trained to work on gas appliances, arrange professional assistance rather than attempting the repair.
The sensing rod should be installed according to the furnace manual, normally close enough to the target flame to detect its presence without touching surrounding surfaces. Compare the bracket, bend direction, and final position with the original installation. A sensor that is secure but mounted away from the proper flame zone may still cause ignition problems.
The strongest overall option in this guide is the Goodman 0130F00010 three-pack because it combines extensive documented cross-references with a useful reserve of matching sensors. The Rheem 62-23543-01 OEM-style listing is a focused budget choice for verified applications, while the White-Rodgers 760-401 offers premium flexibility for hot-surface ignition systems that require a long lead, remote mounting, or multiple-burner use.
Before ordering any sensor, prioritize the exact part number and the physical match. Confirm brand, model, rod length, offset, bend angle, mounting base, and electrical termination using the furnace manual and the failed component. These details matter more than broad claims of compatibility, especially because adjacent part numbers can describe sensors with different shapes.
Product prices, ratings, availability, and listing details can change, so review the current Amazon page before making a final decision. If the model or installation is uncertain, use qualified HVAC assistance. A correctly matched sensor, safely installed and properly positioned, can restore flame detection and support dependable heating operation.