Lochinvar & A.O. Smith 100093810 Switch R-22 Professional calibration ensures it meets

Professional calibration ensures it meets exact HVAC control board specifications for voltage and amperage tolerances

this is the official manufacturer-designated direct replacement for the 3H32737-2

preventing refrigerant loss during component swaps or seasonal system tune-ups

Durable Construction: Manufactured using high-quality materials to resist standard wear and corrosion in demanding HVAC environments

Multi-Positional Mounting: The 325 series design allows for versatile installation

Lochinvar & A.O. Smith 100093810 Switch R-22 Professional calibration ensures it meetsThe Lochinvar & A. O. Smith 100093810 Switch is a critical safety component designed specifically for natural gas water heaters, including the high volume FG40T34 residential model. As a primary water heater door switch, this part functions as an electrochemical interlock, ensuring the burner assembly only receives fuel when the access door is fully seated and secured. This OEM replacement part is engineered to meet the precise tolerances of Lochinvar