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Description
52W29 Furnace Flame Sensor Replacement - For Lennox Armstrong & Ducane Furnaces52W29 Furnace Flame Sensor Key Features Monitors burner flame to ensure safe furnace operation. Direct replacement for the original manufacturer's part. Overall length: 5. 25 inches. Sensing rod length: 2. 75 inches. Constructed with a high temperature resistant metal rod and ceramic insulator. Replaces Cross Reference Part Numbers 52W29 52W2901 31L71 31L7101 LB 74940A 28PV41 903600 FLS52W29 Compatibility & Fitment Fits specific gas furnace models
52W29 Furnace Flame Sensor
Key Features
- Monitors burner flame to ensure safe furnace operation.
- Direct replacement for the original manufacturer's part.
- Overall length: 5.25 inches.
- Sensing rod length: 2.75 inches.
- Constructed with a high-temperature resistant metal rod and ceramic insulator.
Replaces / Cross-Reference Part Numbers
- 52W29
- 52W2901
- 31L71
- 31L7101
- LB-74940A
- 28PV41
- 903600
- FLS52W29
Compatibility & Fitment
- Fits specific gas furnace models from Lennox, Armstrong, and Ducane.
- Compatible with furnace series including G40, G41, G50, G51, G60, G61, and G71.
When to Replace
- Furnace ignites but shuts down after a few seconds.
- Furnace fails to heat consistently or at all.
- The sensor rod is visibly corroded, cracked, or has heavy carbon buildup that cannot be cleaned.
Installation Tips
- Disconnect all electrical power to the furnace before servicing.
- Handle the component by its metal bracket to avoid damaging the ceramic insulator.
- Ensure the sensor rod is properly positioned in the flame path for correct operation.
- Verify a secure wire connection before restoring power.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 3
Not a big fan
Oily and doesn’t absorb well. The scent was very overpowered with honey.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
★★★★★ 5
Amazing product
I have just purchased my 7th jar! I absolutely love this product...and its American made! It leaves my skin soft, radiant and glowing! I didn't tell anyone about using it and people started asking me what I was doing differently. I get complements about my youthful glow! This company makes an amazing product and I hope that it will always be available! I have friends and family members hooked on it now. My mom just dropped a stocking stuffer hint to me tonight for another jar!
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Reviewed in the United States on November 21, 2025
★★★★★ 5
Legit balm. Not whipped. Made in USA.
Legit tallow balm. Not whipped. I love this stuff. It's the only thing that soothes, softens, and relieves my dry skin in the winter. Also made in USA, which is a priority for me.
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Reviewed in the United States on January 30, 2026
★★★★★ 5
Great winter moisturizer! Not greasy & absorbs well!
I needed a moisturizer that would last in colder weather. My skin is oily/normal and works well with my other facial products. I strictly use The Ordinary products and add this at the end to seal in the moisture. Pretty surprised how quickly this absorbed in to my skin. Has no scent and melts quickly on finger tips. I use it on my face and heels of my feet. Honestly love this addition to my fall/winter skincare routine. A little goes a long way! I have been using for a month now with great results. Definitely a great buy!
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Reviewed in the United States on November 27, 2024
★★★★★ 3
Great product if you can actually use it
Of the 4 orders I've placed for this lotion, only 2 have come perfectly. One of them came leaking tallow out of the container and package, and then it's replacement arrived with the jar completely shattered.
The tallow itself is so hydrating and smells great, but if the company itself needs to fix it's packaging.
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Reviewed in the United States on November 7, 2024