Lochinvar & A.O. Smith 100111318 Intake Switch 328140-751 When performing this AC fan

When performing this AC fan motor replacement

ensuring that the 160°C thermal cutoff functions within factory parameters to prevent safety hazards

this crankcase heater kit eliminates the risk of oil dilution

maximizing the efficiency of the heat exchange process in older high-capacity units

leak-proof joints

Lochinvar & A.O. Smith 100111318 Intake Switch 328140-751 When performing this AC fanThe Lochinvar & A. O. Smith 100111318 Intake Switch is a critical safety component designed for commercial water heaters and high efficiency boilers. This blocked intake air pressure switch operates as a normally closed (NC) contact, ensuring that the combustion blower only proceeds with the ignition sequence when the air inlet is clear of obstructions. As a veteran grade OEM replacement part, it is engineered to detect vacuum fluctuations caused by