Lochinvar & A.O. Smith 100208388 Pressure Switch THPU32HP7Y causing the plunger to seat

causing the plunger to seat incorrectly (shading)

Always check your specific unit's parts breakdown

technicians must verify the bore size and pitch to prevent motor overloading or reduced cooling capacity

the 10-foot tube can be field-shortened to match the specific duct width

Common Questions: Is the S1-024-42074-000 a direct replacement for S1-024-18397-000

Lochinvar & A.O. Smith 100208388 Pressure Switch THPU32HP7Y causing the plunger to seatThe Lochinvar & A. O. Smith 100208388 Pressure Switch is a critical 1" WC (Water Column) safety component designed for high efficiency boiler and water heater systems. As an authentic OEM replacement part, it ensures the inducer motor is pulling the correct draft before the ignition sequence begins. Rated at 1. 0" WC, this single pole, double throw (SPDT) switch is engineered to monitor combustion air pressure and prevent operation under unsafe