Technicians typically observe "no-heat" calls where the furnace attempts to start but fails to produce a spark

preventing the common "hunting" or erratic pressure delivery issues caused by worn internals

Can I use this for both 2-way and 3-way valve bodies

While it includes the terminal cover and basic mounting hardware

Lochinvar & A.O. Smith 100166090 Pressure Switch 326058-756 Technicians typically observe "no-heat" callsThe Lochinvar & A. O. Smith 100166090 Pressure Switch is a critical safety component designed for high efficiency boilers and water heaters. As a veteran technician knows, this OEM replacement part is essential for verifying proper blower operation and flue venting before the ignition sequence begins. It functions by monitoring the differential pressure within the combustion chamber, ensuring that the combustion air blower is moving sufficient air to