
36T01B2 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $79.99 | Condition is New – Open box, NOS Genuine OEM Lennox 36T01B2 HIGH Limit Switch L180-40F OEM 1.75 "36T01 B2, shipping cost = $8.95 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $43.95 | Condition is New, OEM Lennox Armstrong Ducane Furnace Limit Switch Fits L140-40F 20001110 36T01 B2, FREE SHIPPING | ![]() |

The Lennox Armstrong Air Conditioning Ducane 36T01B2 limit switch is an essential component of your HVAC system designed to ensure safe and efficient operation. This limit switch is specifically engineered for use with Lennox's Armstrong Ducane series air conditioners, model number 20001103, and is identified as part number L170-40F.
This switch is primarily responsible for controlling the compressor and fan motor in your air conditioning unit, preventing them from operating beyond certain temperature limits. By doing so, it safeguards the system against potential damage due to overheating or other temperature-related issues.
The Lennox Armstrong Air Conditioning Ducane 36T01B2 limit switch is manufactured with high-quality materials that ensure durability and reliability. It is designed to fit seamlessly into your existing HVAC system, making installation a straightforward process. The switch comes with clear markings for easy identification of the low and high-temperature limits.
This limit switch features a robust design that can withstand the rigors of constant use in a heating and cooling system. Its contact rating is 15 amps at 120 volts, ensuring it can handle the electrical demands of your air conditioning unit. The switch is also built to last, with a corrosion-resistant housing that protects against the elements and ensures a long service life.
In the event of a temperature-related issue, this limit switch will activate and prevent the compressor and fan motor from continuing to operate. This not only protects your system from damage but also helps maintain the desired temperature in your home or business, ensuring your comfort.
When it comes to maintaining the performance of your Lennox Armstrong Air Conditioning Ducane 36T01B2 limit switch, regular inspections and cleaning are recommended. This will help ensure the switch is functioning correctly and can continue to protect your HVAC system from potential damage.
In summary, the Lennox Armstrong Air Conditioning Ducane 36T01B2 limit switch is an essential component of your HVAC system that ensures safe and efficient operation. Its robust design, clear markings, and easy installation make it an ideal choice for those seeking a reliable and long-lasting solution for temperature control in their air conditioning unit.
Lennox Armstrong Ducane 36T01B2 Limit Switch: A Comprehensive Analysis
The Lennox Armstrong Ducane 36T01B2 limit switch is a crucial component in regulating the operation of certain Lennox heating systems. This analysis aims to provide an unbiased assessment of the product, outlining its key features, pros, cons, and a concluding recommendation.
**Features:**The Lennox Armstrong Ducane 36T01B2 limit switch is designed for use with gas furnaces and packaged units, ensuring temperature safety and system protection. It is manufactured with durable materials to ensure long-lasting performance.
**Pros:**1. Enhanced Safety: The limit switch helps prevent potential safety hazards by regulating the temperature and ensuring the system doesn't overheat.
2. Long-lasting: The switch is designed with high-quality components that can withstand the rigors of continuous use in heating systems.
3. Easy Installation: The limit switch is straightforward to install, making it a convenient solution for homeowners or HVAC professionals.
4. Compatibility: This limit switch is compatible with various Lennox heating systems, ensuring a wide range of applications.
**Cons:**1. Potential for Malfunction: Like any mechanical component, limit switches can fail, causing inconvenience and requiring replacement.
2. Limited Warranty: The Lennox Armstrong Ducane 36T01B2 limit switch comes with a limited warranty, which may not cover all potential issues or damages.
3. Requires Professional Assistance for Complex Installations: While the installation process is generally straightforward, some homeowners might find it necessary to seek help from an HVAC professional.
**Conclusion:**The Lennox Armstrong Ducane 36T01B2 limit switch is a valuable investment for those seeking to ensure the safety and efficiency of their heating systems. Its long-lasting design, compatibility with various Lennox systems, and ease of installation make it a favorable choice. However, potential consumers should be aware of the possibility of malfunctions and the limited warranty coverage. Ultimately, the decision to purchase this limit switch should be based on individual needs, budget, and the extent of desired peace of mind regarding heating system safety.
**Recommendation:**If you're in the market for a reliable limit switch for your Lennox heating system, the Armstrong Ducane 36T01B2 is an excellent option. Its durable construction, compatibility, and ease of installation make it an attractive choice for homeowners and HVAC professionals alike. Just keep in mind the potential for malfunctions and the limited warranty coverage when making your purchasing decision.
Details:
Lennox Armstrong ducnae 2000 1103 L170-40F limit switch 36T01B2.
specifications centrafurn:
- brand: Lennox Armstrong Ducane
- mpn: 36t01b2
- control style: Switch
- type: Central Furnace
shipping centrafurn:
- type: calculated
- transit: 3-6 days
- class: standard
- carrier: usps
- service: usps first class
payments centrafurn:
- wallet: google-pay
- other
- credit card: diners-club
returns centrafurn:
- policy: returns accepted
- method: money back
- time: 30 days
- paid by: buyer
offer centrafurn:
- sold #: 9
- started: february 7, 2026
- in stock #: 2
- prices: $43.95–$79.99
- item condition:
- New – Open box
- New
- availability: in stock
- options: ship-to-home
general centrafurn:
- category: Home & Garden > Heating, Air > Cooling Systems > Central Furnaces
seller centrafurn:
- # reviews: 407
- city: mankato, minnesota
- rating: 96.2%
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