773-201

This high-performance Rheem Pressure Switch is a critical safety component designed for modern high-efficiency gas furnaces and HVAC systems. Functioning as an air-proving switch, it monitors the negative pressure created by the inducer blower motor to ensure that combustion gases are being properly vented before the ignition cycle begins. A failing pressure switch is a common cause of furnace ignition failure and heating system lockout; replacing a faulty sensor with this precise 0.30" WC (Water Column) switch helps restore safe and efficient operation. Engineered for reliability, this component protects your home by preventing the furnace from running if optimal airflow is not detected, ensuring all exhaust is safely directed out of the flue. It is an essential repair part for maintaining the integrity of high-efficiency heating units.
Type: Air Pressure Switch / Air Proving Switch
Size: Compact
Application: Used in high-efficiency gas furnaces and HVAC heating systems to monitor inducer motor airflow and combustion venting safety.
Specifications: Set Point: 0.30" WC (Water Column); Type: Single Pole, Normally Open; Application: Air Proving and Safety Interlock.