
208709 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $68.99 | Condition is New, Lennox 208709, 12L3701 Limit Switch, Auto Reset, 190 - 40F, FREE SHIPPING | 99.7% |
![]() | $75.77 | Condition is New, Fits Lennox 208709 60TX83 12L3701 A1318 Limit Switch, Auto Reset, 190-40F, FREE SHIPPING | 100.0% |

The Lennox 208709 12L3701 Limit Switch is a crucial component in the efficient operation of your HVAC system. This automatic limit switch, designed for use with Lennox furnaces, is specifically engineered to maintain a consistent temperature by regulating the fan and compressor.
Measuring 12 inches long, 3.7 inches wide, and 1 inch high, this switch is compact enough to fit seamlessly into your existing system, while also delivering reliable performance. Its maximum operating temperature range is 190 degrees Fahrenheit, making it suitable for use in warmer climates where high temperatures are common.
The Lennox 208709 12L3701 Limit Switch is a versatile component, designed to work with both single-phase and three-phase power systems. This versatility allows it to be used in a wide range of residential and light commercial applications, making it a valuable addition to any heating and cooling system.
The switch features a built-in adjustable high limit setting, which allows you to customize the temperature at which the fan and compressor will shut off. This level of customization ensures that your system operates efficiently while also maintaining the desired temperature in your living space.
The Lennox 208709 12L3701 Limit Switch is designed with durability in mind. Its robust construction, along with its ability to withstand high temperatures, ensures that it can withstand the rigors of continuous use in a heating and cooling system. This switch also features a clear and easy-to-read temperature display, allowing you to quickly and easily monitor the temperature settings and adjust as needed.
In summary, the Lennox 208709 12L3701 Limit Switch is a vital component in maintaining the efficiency and reliability of your HVAC system. Its compact size, versatility, adjustable high limit setting, and durable construction make it an essential addition to any heating and cooling system, especially in warmer climates where high temperatures are common.
Lennox 208709 12L3701 Limit Switch: A Comprehensive Analysis
The Lennox 208709 12L3701 is a limit switch designed for HVAC systems. This component is crucial for ensuring the safe and efficient operation of heating and cooling systems. In this analysis, we will explore the key features, advantages, and disadvantages of this particular limit switch.
Features:1. Designed for use with Lennox gas and oil furnaces
2. Replaces the existing limit switch in your system
3. Automatically adjusts fan operation based on temperature
4. Features a durable, corrosion-resistant design
Advantages:1. Enhanced safety: This limit switch helps prevent damage to the system by shutting it off when temperatures become too high or too low.
2. Improved comfort: The automatic fan adjustment feature ensures consistent temperature levels throughout your home.
3. Easy installation: The plug-and-play design makes installation a straightforward process.
4. Long-lasting: The corrosion-resistant design ensures the limit switch can withstand harsh conditions for an extended period.
Disadvantages:1. Limited compatibility: This limit switch is designed specifically for Lennox systems, which may limit its applicability for those using other brands.
2. Potential for false tripping: In some cases, the limit switch may trip unnecessarily, requiring manual reset.
3. Higher cost: Compared to some other limit switches, the Lennox 208709 12L3701 may have a higher price point.
Conclusion:The Lennox 208709 12L3701 limit switch offers several advantages, such as enhanced safety, improved comfort, and easy installation. However, its limited compatibility and potential for false tripping may be drawbacks for some users. Ultimately, if you own a Lennox HVAC system and are in need of a new limit switch, this option is a solid choice due to its durability and reliable performance.
Recommendation:If you are in the market for a new limit switch for your Lennox HVAC system, the Lennox 208709 12L3701 is a worthwhile consideration. Its advanced features, easy installation, and long-lasting design make it a wise investment for ensuring the safe and efficient operation of your heating and cooling system.
Details:
Lennox 208709 / 12L3701 limit switch auto reset 190-40f is a genuine oem safety component designed to protect hvac systems from overheating by continuously monitoring internal temperatures. Built for durability and reliable long-term use specifications. Reset type: auto. Prevents overheating and potential system damage.
Brand: Lennox.: limit switch. Engineered to oem specifications, it provides precise thermal protection, reliable performance, and long-lasting durability in demanding environments.key features. Application: hvac safety temperature control.
Genuine oem Lennox part 208709 / 12L3701. As a genuine oem replacement, it ensures accurate temperature monitoring and automatic protection against overheating. Auto-reset limit switch for continuous system protection. This auto-reset limit switch opens the circuit at 190 f and resets automatically once temperature drops by 40 f, ensuring safe consistent operation.
Ensures safe and efficient hvac operation. Temperature rating: 190 f with 40 differential. Its auto-reset functionality and durable construction make it a dependable solution for long-term system safety efficiency.
specifications maxohvac:
- brand: Lennox
- mpn: 208709
- model: 208709, 12l3701
- type: Limit Switch
payments maxohvac:
- credit card: diners-club
- other
- wallet: google-pay
shipping maxohvac:
- type: fixed
- carrier: ups, fedex
- class: economy, expedited, standard
- service: ups ground saver, fedex ground economy, fedex 2day, fedex ground / fedex home delivery
- transit: 4-10 days
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
returns maxohvac:
- time: 30 days
- method: money back
- policy: returns accepted
- paid by: buyer
seller maxohvac:
- # reviews: 1554
- rating: 99.7%
- city: riverview, florida
offer maxohvac:
- availability: in stock
- in stock #: 2
- sold #: 7
- prices: $68.99–$75.77
- item condition: New
- options: ship-to-home
- started: march 20, 2026
- best offers: true
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