Carrier HH18HA095 Switch

The Carrier HH18HA095 is a professional-grade high-limit pressure switch engineered for precision monitoring in HVACR systems. Designed as a 1/2-inch pipe mounted switch, this component features a factory-calibrated open rating of 80 PSI and a close rating of 27 PSI. This SPST pressure control provides essential system protection by breaking the electrical circuit when internal pressure exceeds safe operating limits, preventing potential compressor damage or system failure. Built with a 55-inch lead wire for flexible installation across various chassis configurations, this direct replacement limit switch ensures compatibility with specific Carrier, Bryant, and Payne rooftop units and split systems. Its robust construction resists vibration and thermal cycling, maintaining trip-point accuracy over extended service intervals. For technicians performing HVAC pressure switch troubleshooting, this genuine OEM part offers the exact electrical ratings and mechanical footprint required for a code-compliant, reliable repair in commercial HVAC maintenance applications.

• Factory-Calibrated Precision: Fixed 80 PSI open and 27 PSI close setpoints eliminate the need for field adjustments and ensure consistent system cycling.
• Extended Reach: The 55-inch integrated wiring harness simplifies pressure switch installation in hard-to-reach areas of the evaporator or condenser coil.
• OEM Compatibility: Specifically engineered as a drop-in replacement for Carrier HH18HA095, maintaining the original safety certifications of the equipment.
• Durable Pipe Mount: The 1/2-inch mounting interface provides a secure, leak-proof connection to the refrigerant line for accurate HVAC pressure sensing.

Is the HH18HA095 a manual or automatic reset switch?
This is an automatic reset switch; it will restore the circuit once the system pressure drops to the 27 PSI close setpoint.

Can this switch be used on high-pressure R-410A systems?
This switch is calibrated for specific low-pressure or limit applications; always verify that the 80 PSI open setpoint aligns with your system’s refrigerant requirements and safety parameters.

Does this switch include the mounting hardware?
The switch is designed for direct pipe mounting and includes the integrated leads, utilizing standard 1/2-inch fittings common in OEM Carrier configurations.

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.