Carrier HK02ZB044 Pressure Switch

The Carrier HK02ZB044 Pressure Switch is a critical OEM replacement part designed for precision monitoring of refrigerant or air pressure within Carrier, Bryant, and Payne HVAC units. This high-reliability low pressure switch features a set point to open at 7 PSI and close at 22 PSI, ensuring the compressor is protected against low-charge conditions or evaporator freeze-ups. Engineered with 50-inch leads, this switch provides ample length for versatile routing and secure connection to the control board, even in cramped air handler or condenser cabinets. As a direct-fit factory component, the HK02ZB044 maintains the exact operating tolerances required to keep systems running within manufacturer specifications. Using a genuine Carrier pressure switch prevents the nuisance tripping and premature component failure often associated with universal aftermarket alternatives. For technicians performing HVAC system diagnostics, this switch is the standard solution for restoring commercial and residential HVAC safety circuits.

• Precise Pressure Regulation: Fixed set points of 7# Open and 22# Close provide automated protection against low-pressure cycles.
• Extended 50-Inch Leads: The 50" LDS configuration simplifies installation across various Carrier air handler and furnace models.
• OEM Compatibility: Guaranteed to interface correctly with 24V control circuits without requiring bracket modifications.
• System Longevity: Prevents compressor damage by interrupting the signal when system pressure drops below safety thresholds.

• What are the exact trip points for this switch? The Carrier HK02ZB044 is calibrated to open the circuit at 7 PSI and reset (close) when pressure climbs back to 22 PSI.
• Will this switch work on my Bryant or Payne unit? Yes, this part is an official OEM replacement for many models within the Carrier family, including Bryant and Payne condensing units and heat pumps.
• Is this a high or low pressure switch? This is a low pressure cut-out switch, primarily used to protect the system from operating with insufficient refrigerant.

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.