Lennox 38M77 High Pressure Switch 640-475 PSI

The Lennox 38M77 High-Pressure Switch is a critical safety aspect of the Lennox HVAC systems mainly furnaces and air conditioners using R410A refrigerant. This small switch is a watchman at heart, keeping an eye on the pressure within the refrigerant line to avoid overheating and damaging the equipment. The switch helps to regulate pressure and cut off power when the pressure reaches the dangerous level thereby averting damage to your furnace or air conditioner which may also be dangerous. The prevent unnecessarily high pressures, the limit switch assists in maintaining the overall dependability and longevity of any Lennox HVAC system.