Description
Product Overview
The Puxyblue 52W29 flame sensor is a critical component designed to detect the presence of a flame in gas furnaces, ensuring safe and efficient ignition. Constructed from high-quality, wear-resistant metal materials, it meets OEM standards for durability and performance. This sensor features a total length of approximately 5.25 inches with a 1-inch to 3/16-inch male quick-connect terminal, making it compatible with a wide range of furnace models. It replaces part numbers such as 52W2901, 31L71, LB-74940A, and 31L7101, providing a reliable solution for maintaining furnace safety and functionality.

Usage
The 52W29 flame sensor is used in residential and light commercial heating systems to monitor the flame during furnace operation. It is ideal for homeowners, HVAC technicians, and property managers who need a dependable replacement part for brands like Lennox, Armstrong, Allied, Concord, Magic Chef, Magic-Pak, and Ducane. This sensor is essential in environments where consistent ignition detection is required to prevent gas leaks and ensure efficient heating, particularly in colder climates or during seasonal maintenance checks.
Why Choose Us
Puxyblue is committed to delivering high-quality flame sensors that undergo rigorous testing to meet OEM standards, ensuring long-lasting performance and reliability. Our focus on customer satisfaction means we provide excellent after-sales support, including assistance during the guarantee period. The 52W29 sensor stands out due to its precise fit, durable construction, and ease of installation, offering a cost-effective alternative to OEM parts without compromising on safety or efficiency.
Key Features
- Detects furnace flames to ensure safe ignition and prevent gas leaks
- Made from high-quality, wear-resistant metal for long-lasting durability
- Perfect fit for top brands like Lennox, Armstrong, and Magic Chef
- Easy installation with a 5.25-inch length and quick-connect terminal
- Rigorous testing to meet OEM standards for reliable performance
FAQ
What brands is this flame sensor compatible with?
This sensor is compatible with Lennox, Armstrong, Allied, Concord, Magic Chef, Magic-Pak, and Ducane furnaces, among others. It replaces part numbers 52W2901, 52W29, 31L71, LB-74940A, and 31L7101 for a wide range of models.
How do I install the 52W29 flame sensor?
Installation is straightforward: ensure the furnace is powered off, remove the old sensor, and connect the new one using the quick-connect terminal. The sensor’s 5.25-inch length and standard design make it easy to fit into most systems, but always verify dimensions before purchase.
What is the length of the flame sensor?
The total length of the 52W29 flame sensor is approximately 5.25 inches, with a terminal size of 1 inch to 3/16 inches, designed for compatibility with various furnace configurations.
Does this sensor come with a warranty?
Yes, Puxyblue offers support during the guarantee period. If you encounter any issues, contact customer service for assistance with replacements or troubleshooting.
Why is flame sensor detection important?
Flame sensor detection ensures that gas furnaces ignite safely and shut off if no flame is detected, preventing potential gas leaks and enhancing overall system safety and efficiency.






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