Key Benefits for Technicians OEM Compatibility: Exact replacement for LH33EP040 and LH33EP040A

System Longevity: Prevents low suction pressure and compressor short-cycling in low-ambient environments

HVAC technicians should always verify the model and serial number on the furnace rating plate to confirm a match before beginning the repair

The Schneider Electric (Erie) VM3312P33A000 is an industrial-grade 3-way modulating zone valve engineered for precision flow control in closed hydronic systems

the Carrier HT01CN236 is frequently used in heat pump control circuits to power reversing valves and defrost boards

Lochinvar & A.O. Smith 100111317 Pressure Switch 326010-701 Key Benefits for Technicians OEMThe Lochinvar & A. O. Smith 100111317 Pressure Switch is a critical OEM safety component engineered for precise airflow verification in high efficiency water heaters and boilers. This normally open air pressure switch is calibrated to a fixed set point of 0. 20" WC (Water Column), ensuring the combustion blower is generating sufficient negative pressure before the ignition sequence initiates. As a genuine 100111317 replacement part, it provides the