Utica-Dunkirk 240013045 Pressure Switch

The Utica-Dunkirk 240013045 Pressure Switch is a critical safety component designed for high-efficiency boilers and furnaces. This .4"WC SPST Pressure Switch operates as a normally open control that closes once the draft inducer motor establishes a negative pressure of 0.4 inches water column. Engineered for the ECR International family of brands, this direct replacement for 14655006 and 146-55-006-70 ensures the combustion sequence only proceeds when the venting system is clear and the inducer is operating at proper RPMs. The SPST (Single Pole Single Throw) configuration provides a reliable electrical path to the control board, preventing ignition in the event of a blocked flue, cracked vacuum tubing, or a failing draft inducer. Field technicians favor the 240013045 HVAC pressure switch for its precise calibration and robust diaphragm construction, which maintains accuracy in demanding residential and light commercial heating environments. Whether you are performing a seasonal tune-up or responding to a "stuck open" error code, this OEM component is the standard for restoring safe system functionality.

• OEM Compatibility: Specifically designed as the direct factory replacement for part numbers 14655006 and 146-55-006-70, ensuring perfect fitment in Utica and Dunkirk boiler systems.
• Safety Verified: Calibrated at a .4" Water Column (WC) set point to monitor critical airflow and prevent hazardous exhaust buildup or carbon monoxide risks.
• High Reliability: Features a durable SPST switch mechanism that withstands the cycling demands of modern high-efficiency heating equipment.
• Precision Monitoring: Sensitive diaphragm detects marginal pressure drops, shielding the heat exchanger and compressor from damage due to venting obstructions.

What are the signs of a failing Utica-Dunkirk 240013045 pressure switch?
Common indicators include the furnace or boiler short-cycling, the inducer motor running without the igniter sparking, or specific error codes on the control board identifying a "Pressure Switch Stuck Open" or "Stuck Closed" fault.

Can this switch be used in systems requiring different WC ratings?
No, pressure switches must match the manufacturer's specified water column rating exactly. Using a switch with an incorrect rating can cause the unit to run under unsafe conditions or fail to ignite entirely.

Why is my new 240013045 switch not closing?
If the switch is functioning correctly, it may stay open due to external issues such as a clogged flue, water in the vacuum tubing, a restricted heat exchanger, or a failing inducer motor that cannot pull the required 0.4" WC vacuum.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.