Lennox 73W76 -0.50" WC SPST Pressure Switch

The Lennox 73W76 Pressure Switch is a safety device incorporated in Lennox HVAC systems, especially furnaces. This automatic switch is your invisible bodyguard; it keeps track of the air pressure in your system for your safety and optimal functionality. Intended for a specific pressure of -0.50 inch water column, the switch guarantees adequate flow of air and combustion within the furnace. This keeps the equipment running efficiently, and helps avoid equipment failure. The pressure switch monitors the pressure level and in case of deviation provides corrections to make certain that the over reliability and life of your Lennox HVAC system are not comprised.