Lennox 32W87 Low Pressure Switch 30 PSI Actuates10 PSI Resets

The Lennox 32W87 Low-Pressure Switch is a safety device manufactured exclusively for Lennox HVAC systems. This switch measures the pressure within your system and is essential in preventing system failures and maintaining safe operation. This is meant to come on when the pressure in your HVAC system drops below a standard pressure of 30 PSI. This pressure drop can be also attributed to a loss of refrigerant or other problem in the system. When low pressure is sensed, the circuit opens, and this leads to a safety shut down of your HVAC system.