As a veteran-preferred thermopile replacement

Installing against the flow can cause "chattering" or water hammer during operation

which will close the B-port when the system is de-energized

Durable SPST Contacts: Engineered for high-cycle reliability

hardware overhauls

Aaon G024540 Pressure Switch Els PW 17895 As a veteran-preferred thermopile replacementThe Aaon G024540 High Pressure Switch is an essential safety component engineered for commercial HVAC units, providing critical protection against over pressurization. Specifically calibrated for R 410A systems, this switch features a 475 650 PSI operating range, functioning as a high limit cutout. As a manual reset pressure switch, it requires technician intervention following an event, ensuring that the root cause of high head pressure is addressed