Four Seasons 37814 HVAC Cut-Off Switch

Reliable Four Seasons Pressure Switch for HVAC Systems

The Four Seasons Pressure Switch part number 37814 is designed to provide precise pressure control in automotive HVAC systems. Engineered with durable plastic and metal materials, this green low cut-out switch ensures system protection by activating at specific pressure thresholds.

• Color: Green for easy identification
• Connector Gender: Female with an oval shape for secure connections
• Fitting Thread Size: M12 female fitting for system mounting
• Operates at low pressure cut-off points: turns off at 12 PSI and on at 30 PSI
• Two-terminal design for reliable electrical performance
• Meets or exceeds OEM specifications for quality assurance

Four Seasons Pressure Switch Product Line Overview

The Pressure Switch line by Four Seasons focuses on precision pressure control components for automotive HVAC systems. This product line includes switches designed to monitor and regulate system pressure, ensuring optimal operation and protection of air conditioning and heating units. The 37814 model fits within this line as a low cut-out switch, providing critical pressure-based system cut-off functionality.

Detailed Product Description and Specifications

The Four Seasons 37814 Pressure Switch is a system-mounted pressure switch that features a female connector with an oval shape, facilitating secure and reliable electrical connections. Constructed from a combination of plastic and metal, it offers durability under typical automotive HVAC operating conditions. The switch operates by cutting off the system at a low pressure of 12 PSI and reactivating at 30 PSI, helping to prevent damage from low refrigerant pressure or system faults. Its M12 female fitting thread size allows for straightforward installation in compatible HVAC systems. This switch is compatible with various vehicle makes and models requiring a low cut-out pressure switch in their HVAC system.

Common Applications and Issues Addressed

• Prevents compressor damage due to low refrigerant pressure
• Protects HVAC system components by regulating pressure cut-off
• Ensures proper cycling of air conditioning systems in vehicles
• Helps maintain system efficiency by preventing operation under unsafe pressure conditions
• Replaces faulty or worn pressure switches in automotive HVAC units

Installation Notes and Tips

When installing the Four Seasons 37814 Pressure Switch, ensure the system is depressurized and the vehicle is off. The M12 female fitting thread size requires proper torque to avoid leaks or damage. Verify the connector orientation matches the oval female connector on the vehicle harness for a secure fit. This switch is system mounted, so confirm the mounting location is clean and free of debris before installation. Consult the vehicle’s service manual for specific HVAC system procedures and safety precautions.

Quality Assurance and Warranty Information

Four Seasons Pressure Switch 37814 meets or exceeds OEM standards, ensuring reliable performance and durability. Manufactured with quality materials and tested for consistent operation, this switch supports long-term HVAC system functionality. Warranty coverage details should be confirmed with the product supplier or manufacturer documentation.