TEKPRO 69W43 Flame Sensor Lennox Furnace Igniter Sensing Rod 850053886447 LB-74940B

( Brand: Tekpro ), ( Manufacturer Part Number: 69W43 ), ( Part Type: Sensor Furnace ), ( Included Components: 2 Thermistor Replacement ), ( Model Name: Flame Sensor ), ( Model Number: 69w43 69w4301 Lb-74940b Lb74940b ), ( UPC: 850053886447 ), ( Package Dimensions Lxwxh: 5.75x4.02x0.59 Inches ), ( Weight: 0.08 Pounds )

Review TEKPRO Flame Sensor For Lennox Furnace Igniter Sensing Rod Fit

The Tekpro 850053886447 Flame Sensor is a crucial component for maintaining optimal performance in Lennox furnaces. This sensor, also known as a flame rod or igniter sensing rod, plays a vital role in the ignition system by detecting the presence of a flame in the combustion chamber.

The sensor is designed with a high-quality, ceramic material that is resistant to thermal shock and wear and tear. Its tip is coated with a sensitive material that can detect the presence of a flame by measuring the resistance between the tip and the furnace's electrode. When a flame is present, the resistance is low, and the furnace's control board receives the signal to continue the ignition process.

The Tekpro 850053886447 Flame Sensor is engineered for a snug fit in standard Lennox furnaces, ensuring reliable contact with the igniter electrode. Its robust design allows it to withstand the intense heat and harsh conditions of a furnace environment, ensuring long-lasting performance.

Installing the sensor is a straightforward process. Simply remove the old sensor, clean the area, and insert the new Tekpro 850053886447 Flame Sensor into the designated hole. Be sure to follow the manufacturer's instructions carefully to ensure proper installation and safe operation.

This flame sensor is an essential replacement part for Lennox furnaces exhibiting issues with ignition, such as failure to ignite or erratic ignition behavior. By ensuring the presence of a functioning flame sensor, homeowners can maintain the safety and efficiency of their heating system.

In summary, the Tekpro 850053886447 Flame Sensor is a high-quality, durable component designed to detect the presence of a flame in Lennox furnaces. Its robust design and easy installation make it an ideal replacement for faulty or worn-out sensors, ensuring reliable ignition and safe, efficient heating.

Pros and Cons of Buying Tekpro 850053886447 69w43 Flame Sensor for Lennox Furnace Igniter Sensing Rod

The Tekpro 850053886447 69w43 Flame Sensor is a crucial component for maintaining the proper functioning of Lennox furnaces. This part is responsible for detecting the presence of a flame and signaling the furnace to continue or stop the ignition process. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this flame sensor for your Lennox furnace.

1. OEM Compatibility: This flame sensor is designed to be an original equipment manufacturer (OEM) replacement for Lennox furnaces, ensuring a perfect fit and function.

2. High Durability: The Tekpro 850053886447 69w43 Flame Sensor is constructed using robust materials to withstand the harsh conditions of a furnace environment, providing extended service life.

3. Improved Safety: A failing flame sensor can lead to various safety issues, such as improper ignition or continued operation without a flame. Replacing a faulty sensor with a new one can help maintain the safety of your home.

4. Energy Savings: A malfunctioning flame sensor can lead to inefficient furnace operation, resulting in increased energy consumption and higher utility bills. By replacing the sensor, you can restore your furnace's energy efficiency.

1. Cost: While the Tekpro 850053886447 69w43 Flame Sensor is an affordable option compared to some aftermarket alternatives, it may still represent a significant investment for some homeowners.

2. Availability: Depending on your location and the specific model of your Lennox furnace, it might be challenging to find this part readily available at your local home improvement or hardware store.

3. Installation Complexity: Installing the flame sensor may require some technical expertise, especially if you're not familiar with the inner workings of your furnace. It's essential to follow the manufacturer's instructions carefully to avoid any potential complications.

The Tekpro 850053886447 69w43 Flame Sensor offers several advantages, including OEM compatibility, high durability, improved safety, and energy savings. However, it also comes with some drawbacks, such as cost, availability, and installation complexity. Ultimately, the decision to purchase this flame sensor depends on your specific needs, budget, and technical abilities. If you value the peace of mind that comes with using an OEM part and are willing to invest in maintaining the efficiency and safety of your Lennox furnace, the Tekpro 850053886447 69w43 Flame Sensor is an excellent choice.

If you own a Lennox furnace and suspect that your flame sensor is faulty, it's recommended to consider purchasing the Tekpro 850053886447 69w43 Flame Sensor as a replacement. This part offers several advantages, such as OEM compatibility, high durability, improved safety, and energy savings. While it may come with some challenges, such as cost and installation complexity, the benefits often outweigh the drawbacks. Ultimately, investing in a high-quality flame sensor like the Tekpro 850053886447 69w43 can help ensure the continued efficiency, safety, and longevity of your Lennox furnace.

Details:

Heat Sensor Replaces OEM part number #69W43, 69W4301, LB-74940B, LB74940B. Flame Sensor Igniter High Quality - alumina ceramic insulator and high temperature flame rod material ensure its heat corrosion resistance. Flame sensor 69W43 is fit for Lennox/Duane/Armstrong furnaces, including Lennox ML18UH EL180 ml180uh090p36b-55 and Duncan 80G1DF070AP12. The most common reasons for replacing the flame sensor are when furnace doesn heat or runs only a few minutes.

Flame Sensor for Lennox Furnace Dimension - 5.3 in length and 90 degree crook on end approximate 1.3.

specifications heaterhunch:

• brand: Tekpro
• mpn: 69w43
• part type: Sensor Furnace
• included components: 2 Thermistor Replacement
• model name: Flame Sensor
• model number: 69w43 69w4301 Lb-74940b Lb74940b
• upc: 850053886447
• package dimensions lxwxh: 5.75x4.02x0.59 Inches
• weight: 0.08 Pounds

general heaterhunch:

• condition: New
• Heating, Cooling Air > Heating Cooling Appliances > Space Heaters

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• policy: No Returns

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shipping heaterhunch:

• cost: $0.00
• transit: 3-10 Days
• type: Fixed
• class: Standard
• service: Standard

seller heaterhunch:

• # reviews: 1901
• rating: 100.0%
• city: Denver, Colorado

offer heaterhunch:

• started: November 18, 2025
• options: Ship-to-home
• availability: In Stock
• quantity: 4
• sold: 0