Lochinvar & A.O. Smith 100166072 Pressure Switch Test for 24VAC at the

Test for 24VAC at the coil leads when the thermostat calls for a mode change (typically the "O" or "B" terminal)

making it the standard replacement for various mid-to-high-efficiency Lennox units

Using a nickel sensor with a controller configured for platinum will result in significant temperature offset errors

Modifying the wire requires proper field termination with compatible high-voltage connectors to prevent arcing or loss of spark energy

Serviceable Design: Durable construction allows for regular cleaning

Lochinvar & A.O. Smith 100166072 Pressure Switch Test for 24VAC at theThe Lochinvar & A. O. Smith 100166072 Pressure Switch is a critical safety component designed for precise vent pressure monitoring in high efficiency commercial boilers and water heaters. This genuine OEM replacement part, which is 100% identical to the Lochinvar PRS1016, ensures that the inducer blower is moving sufficient air to maintain a safe combustion environment. As a veteran technician knows, a faulty exhaust pressure switch is a common