THERM-O-DISK 36TX11-21554 Furnace Limit Switch 69M3801

( Brand: Therm-o-disk ), ( Model: 69M3801 ), ( Part Type: Furnace Switch ), ( Manufacturer Part Number: 36TX11-21554 ), ( Country Of Origin: United States )

Review THERM O DISK Furnace Limit Switch

The Therm-O-Disk 36TX11-21554 is a high-quality furnace limit switch manufactured by Honeywell. This essential component is designed to ensure the safe and efficient operation of your heating system by monitoring the furnace temperature and preventing it from overheating.

The switch is a thermal limit switch, which means it operates based on temperature. It is rated for a maximum temperature of 215 F (102 C) and a minimum temperature of 36 F (2 C). The 36TX11-21554 is designed for use with 115V, 60Hz electric systems, making it a suitable option for most residential heating applications.

The Therm-O-Disk 36TX11-21554 is designed with a thermal disc that expands when the temperature reaches the set point. When the disc expands, it breaks the contact between two terminals, disconnecting the power supply to the furnace. This safety feature helps prevent damage to the furnace and reduces the risk of a fire.

The switch is compact in size, measuring approximately 2.5 inches in diameter and 1 inch in thickness, making it easy to install in most furnace models. It comes with two wires, which are color-coded for easy identification: the white wire is for the normal temperature connection, and the red wire is for the limit switch connection.

The Therm-O-Disk 36TX11-21554 is a durable and reliable component, designed to provide long-lasting performance. It is made from high-quality materials and is built to withstand the rigors of frequent use in a heating system. The switch is also UL listed, which means it has been tested and certified to meet the safety standards set by Underwriters Laboratories.

Installing the Therm-O-Disk 36TX11-21554 is a straightforward process that can be done by a homeowner with some basic electrical knowledge or by a professional HVAC technician. The switch comes with clear instructions and diagrams to guide you through the installation process. If you have any questions or concerns about installing the switch, it is always recommended to consult with a qualified professional.

In summary, the Therm-O-Disk 36TX11-21554 is a critical safety component for your heating system that helps prevent overheating and potential damage or fire. It is a high-quality, reliable, and easy-to-install thermal limit switch that is suitable for most residential heating applications.

Therm-O-Disk 36TX11-21554 Furnace Limit Switch (69M3801): A Detailed Analysis

The Therm-O-Disk 36TX11-21554 Furnace Limit Switch (69M3801) is a crucial component in maintaining the safety and efficiency of your heating system. Let's explore the potential advantages and disadvantages of purchasing this part.

1. Ensures safety: A limit switch is a vital safety feature in a furnace. It prevents the furnace from overheating, which could lead to fires or other hazardous situations. Replacing a worn-out or faulty limit switch with a new one ensures the continued safety of your home and family.

2. Improves efficiency: A malfunctioning limit switch can cause your furnace to cycle on and off more frequently than necessary. Replacing the switch with a new one can help restore proper operation, reducing unnecessary energy consumption and saving you money on your utility bills.

3. Easy installation: The Therm-O-Disk 36TX11-21554 Furnace Limit Switch is designed for easy installation. The switch is typically located near the furnace's flame sensor, and replacement usually involves a few simple steps, such as removing the old switch, attaching the new one, and testing the furnace to ensure proper operation.

1. Cost: While the Therm-O-Disk 36TX11-21554 Furnace Limit Switch is not an overly expensive part, it is still an added expense for homeowners. The cost of the switch, labor for installation (if hiring a professional), and any additional materials needed for the installation process can add up.

2. Potential for additional issues: In some cases, a faulty limit switch may be a symptom of a larger problem within the furnace. Once the switch is replaced, it may reveal other issues that require further attention and additional costs.

The Therm-O-Disk 36TX11-21554 Furnace Limit Switch (69M3801) is an essential component for the safe and efficient operation of your heating system. While there are costs associated with its purchase and installation, the advantages such as improved safety, energy savings, and easy installation outweigh the disadvantages for most homeowners. If you suspect that your furnace limit switch may be faulty, it's recommended that you replace it as soon as possible to maintain the overall health and performance of your heating system.

Details:

Condition is Used. Therm-O-Disk 36TX11-21554 Furnace Limit Switch 69M3801. Shipped with USPS Ground Advantage.

part #: 36tx1121554 prices

• $26.00-$26.58

specifications aerationaura:

• brand: Therm-o-disk
• model#: 69M3801
• part type: Furnace Switch
• manufacturer part number: 36TX11-21554
• country of origin: United States

shipping aerationaura:

• service: USPS Ground Advantage
• carrier: USPS
• class: Standard
• transit: 5-12 Days
• cost: $0.00
• type: Calculated

offer aerationaura:

• sold: 0
• started: May 14, 2026
• availability: In Stock
• options: Ship-to-home
• quantity: 2

general aerationaura:

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

payments aerationaura:

• wallet: Apple-pay
• credit card: Diners-club
• other

seller aerationaura:

• rating: 99.6%
• # reviews: 1924
• city: San Antonio, Texas

returns aerationaura:

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

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