Lennox 15M20 SPST Pressure Switch W/Bracket 0.10" WC

The Lennox 15M20 Pressure Switch uses a support bracket and is used in HVAC systems to regulate the pressure of air properly. This switch works with an SPST mechanism and is triggered at a specific pressure of 0.10 inches water column. When the air pressure drops below this value the switch opens interrupting the electrical circuit and making it safer and more reliable not to use the HVAC system. The ensure the free flow of air is maintained and not restricted to prolong the longevity. This helps in furthering the goal of minimizing energy consumption and costs by operating the system under a safe pressure limit as well as in enhancing the longevity of HVAC systems.