When a furnace pressure switch troubleshooting process identifies a failed internal diaphragm or oxidized contacts

which offer industry-leading reliability and tight ANSI Class IV shutoff

This differential air pressure switch features a factory-fixed setpoint of 0

reducing lockout errors and troubleshooting time for service contractors

True Solid-State Reliability: With no moving parts to fail and no calibration required

Carrier EA02SC362 TXV Valve 318973-401 When a furnace pressure switchThe Carrier EA02SC362 TXV Valve is a critical OEM replacement part designed for precision refrigerant metering in R 22 and R 407C residential and commercial HVAC systems. This 5 ton capacity thermostatic expansion valve (TXV) features a durable brass bar stock body and utilizes a bi metal construction to ensure accurate superheat control at the evaporator outlet. With 5 8" x 7 8" ODF sweat connections, this valve provides a secure, leak free braze