With an operating pressure differential of 5-125 PSI

Replacement is recommended if physical degradation

Can I use this switch for negative pressure sensing

you ensure that the system maintains its original engineering specifications while providing the high-static airflow performance necessary for larger ducted applications

this centrifugal blower ensures the pressure switch closes reliably to initiate the heating cycle

Lochinvar & A.O. Smith 100111914 Pressure Switch Freon With an operating pressure differentialFor service professionals maintaining Lochinvar and A. O. Smith high efficiency systems, the Lochinvar & A. O. Smith 100111914 Pressure Switch is the mandatory OEM solution for restoring proper sequence of operation. This air pressure switch is a precision calibrated safety component designed to verify adequate blower performance and venting integrity before allowing the ignition cycle to proceed. It serves as a direct fit replacement for furnace and