12L21 | Lennox 100087-15, Low Pressure Switch, Actuates at 40 PSI; Resets at 25 PSI | Lennox

**Lennox Low-Pressure Switch (12L21)** The Lennox 12L21 low-pressure switch is a crucial component for maintaining optimal operation in heating and ventilation systems. Designed for precise pressure monitoring, it ensures that air pressure levels are within designated parameters. With its advanced technology, this switch promptly detects pressure drops and triggers the appropriate response to prevent system failures or malfunctions. **Key Features:** * **Reliable Pressure Monitoring:** Continuously monitors air pressure levels, providing accurate readings for optimal system performance. * **Precise Pressure Range:** Calibrated to operate within a specific pressure range, ensuring sensitive detection of pressure variations. * **Prompt Response:** Swiftly triggers the necessary response upon detecting pressure drops, minimizing the risk of system damage or downtime. * **Easy Installation:** Designed for straightforward installation, saving time and effort during maintenance or replacement. * **Durable Construction:** Robust construction ensures longevity and reliability in challenging industrial environments. **Benefits:** * Protects heating and ventilation systems from pressure-related failures. * Ensures efficient system operation by maintaining optimal pressure levels. * Reduces downtime and maintenance costs by detecting potential issues early. * Provides peace of mind with its reliable performance and accurate pressure monitoring. Our HVAC supply store offers the Lennox 12L21 low-pressure switch at the most competitive prices and with the fastest shipping times. Choose us for top-notch products and exceptional service!