Lochinvar & A.O. Smith 100166090 Pressure Switch 320819-301 and Lennox air conditioning platforms

and Lennox air conditioning platforms

When you are servicing balanced port thermostatic expansion valves

By choosing this ASCO spare parts kit

When performing a refrigeration system cleanup after an motor burnout

This 1-cylinder unit operates on a 380-400V/3ph/50Hz and 460V/3ph/60Hz power supply

Lochinvar & A.O. Smith 100166090 Pressure Switch 320819-301 and Lennox air conditioning platformsThe 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