Lennox 12L20 is a genuine Lennox 100087-14 high pressure switch designed for reliable system protection in residential and light commercial HVAC applications. This pressure switch actuates at 590 PSI and automatically resets at 418 PSI, helping prevent over-pressure conditions and ensuring safe compressor operation. Built to Lennox OEM standards, it supports consistent system performance and reduces the risk of premature component failure.

This high pressure switch is commonly used in Lennox air conditioners and heat pumps that require precise refrigerant pressure monitoring. It is ideal for service replacements when the original 100087-14 switch has failed or shows intermittent performance. Using an authentic Lennox component maintains system efficiency, compatibility, and warranty compliance.

Key features:
• Actuates at 590 PSI for over-pressure protection
• Automatic reset at 418 PSI for uninterrupted operation
• OEM Lennox 100087-14 replacement part
• Enhances system safety and compressor reliability
• Suitable for select Lennox AC and heat pump models

Specifications:
• Part number: 12L20
• Catalog number: 100087-14
• Function: High pressure safety switch
• Actuation pressure: 590 PSI
• Reset pressure: 418 PSI
• Application: Lennox air conditioning and heat pump systems