FLAME 74940 Tekpro Sensor Lennox Furnace Igniter Sensing Rod 4301 69W43

( Brand: Flame ), ( Model: 69 W 43 69 W 4301 LB 74940 B LB 74940 B ), ( Part Type: Sensor Furnace ), ( Product Dimensions: 5 3 X 1 29 X 0 6 Inches 1 23 Ounces ), ( Manufacturer Part Number: 74940 )

Review FLAME Tekpro 69w43 Sensor Lennox Furnace Igniter Sensing Rod Fit

The Tekpro 74940 69W43 Flame Sensor is a crucial component for ensuring optimal performance and safety in Lennox furnaces. This flame sensor, also known as an igniter sensing rod, is designed to detect the presence of a flame when the furnace is in operation.

This sensor is made from high-quality ceramic material with a sensitive metallic tip. The tip is coated with a material that glows red when a flame is present. When the furnace is ignited, the flame heats up the sensor, causing the glowing tip to emit an electrical signal. This signal is then sent to the furnace's control board, which in turn signals the gas valve to continue providing gas to keep the flame burning.

The Tekpro 74940 69W43 Flame Sensor is designed to fit specifically in Lennox furnaces with a 69W43 part number. It measures approximately 2.5 inches long and 0.5 inches in diameter, making it a precise fit for the designated furnace models.

This flame sensor is also designed to be durable and long-lasting. It is built to withstand high temperatures and frequent use. However, like any other component, it may wear out over time due to normal use or other factors. When this happens, it's essential to replace the sensor to maintain the furnace's optimal performance and safety.

Installing the Tekpro 74940 69W43 Flame Sensor is a relatively simple process. It involves removing the old sensor, cleaning the area around the sensor, and securing the new sensor in place. It's important to follow the manufacturer's instructions carefully to ensure a proper installation.

In conclusion, the Tekpro 74940 69W43 Flame Sensor is an essential component for Lennox furnaces, responsible for detecting the presence of a flame and ensuring safe and efficient operation. This sensor is made from high-quality materials, designed to fit specifically in Lennox furnaces with a 69W43 part number, and is built to be durable and long-lasting. When it's time to replace the sensor, following the manufacturer's instructions carefully to ensure a proper installation is crucial.

Pros and Cons of buying a Tekpro 74940 69w43 Flame Sensor for Lennox Furnace Igniter Sensing Rod

The Tekpro 74940 69w43 is a flame sensor designed for use in Lennox furnaces. Replacing a faulty igniter sensing rod with a new one like this Tekpro flame sensor can help restore the proper functioning of your furnace. Let's examine the potential advantages and disadvantages of purchasing this flame sensor.

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

2. Improved Performance: A new flame sensor can help improve the overall performance of your furnace by ensuring accurate flame detection and maintaining consistent heating temperatures.

3. Cost-Effective: Compared to the cost of a full furnace repair or replacement, purchasing a new flame sensor can save you a significant amount of money.

4. Easy Installation: The flame sensor is typically a straightforward component to replace, often requiring minimal tools and technical expertise.

5. Reliable: A high-quality flame sensor like the Tekpro 74940 69w43 can provide reliable performance for an extended period, reducing the need for frequent replacements.

1. Potential for User Error: Improper installation or failure to follow the manufacturer's instructions could lead to incorrect functioning or damage to the furnace.

2. Cost: While the cost of the flame sensor itself may be relatively low, the labor costs for installation or the cost of the diagnostic service call from a professional technician could add to the overall expense.

3. Temporary Solution: In some cases, a faulty flame sensor may be a symptom of a larger issue within the furnace, which could require additional repairs or even replacement of the furnace.

The Tekpro 74940 69w43 flame sensor is an excellent choice for those looking to restore their Lennox furnace to proper functioning. Its OEM compatibility, improved performance, and cost-effectiveness make it a compelling option. However, potential users should be aware of the risks associated with user error and the possibility of this being a temporary solution to a larger issue within the furnace.

If you're confident in your technical abilities and believe the issue with your furnace is solely related to the igniter sensing rod, then purchasing and installing the Tekpro 74940 69w43 flame sensor could be a wise investment. However, if you're unsure or uncomfortable with the installation process, it's recommended to consult a professional technician for assistance. Additionally, if you suspect that the flame sensor may be a symptom of a larger issue within the furnace, it's essential to address that underlying problem to ensure long-term reliability and efficiency.

Details:

Flame Sensor Igniter High Quality - alumina ceramic insulator and high temperature Flame rod material ensure its heat corrosion resistance. 69W43 Flame Sensor for Lennox Furnace - Igniter Sensing Rod Fit Duane Armstrong and EL180 ML18UH Furnaces, Heat Replace 69W4301 LB-74940B LB74940B 2: Dimensions: 5.3 x 1.29 0.6 inches; 1.23 ounces. The most common reasons for replacing the Flame sensor are when furnace doesn heat or runs only a few minutes. Manufacturer: TEKPRO.

Item model number: 69W43 69W4301 LB-74940B LB74940B. Flame Sensor for Lennox Furnace Dimension - 5.3 in length and 90 degree crook on end approximate 1.3. Flame sensor 69W43 is fit for Lennox/Duane/Armstrong furnaces, including Lennox ML18UH EL180 ml180uh090p36b-55 and Duncan 80G1DF070AP12.

part #: 74940 prices

• $10.39-$18.95

specifications aerationaura:

• brand: Flame
• model#: 69 W 43 69 W 4301 LB 74940 B LB 74940 B
• part type: Sensor Furnace
• product dimensions: 5 3 X 1 29 X 0 6 Inches 1 23 Ounces
• manufacturer part number: 74940

shipping aerationaura:

• transit: 4-10 Days
• cost: $0.00
• service: Standard
• type: Fixed
• class: Standard

seller aerationaura:

• # reviews: 0
• city: Brooklyn, New York
• rating: 0.0%

offer aerationaura:

• quantity: 1
• availability: In Stock
• started: September 28, 2025
• options: Ship-to-home
• sold: 0

returns aerationaura:

• method: Money back
• policy: Returns Accepted
• time: 30 Days
• paid by: Buyer

general aerationaura:

• condition: New
• Home Improvement > Heating, Cooling Air > Other Heating, Cooling Air

payments aerationaura:

• wallet: Apple-pay
• credit card: Discover
• other

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