Four Seasons 37805 HVAC Pressure Switch

Reliable HVAC Pressure Switch for Vehicle Climate Control

The Four Seasons Pressure Switch part number 37805 is designed to maintain optimal HVAC system performance by monitoring pressure levels accurately. This system-mounted low cut-out switch ensures your vehicle's air conditioning operates within safe pressure ranges, protecting components and enhancing comfort.

• Color: Black for easy identification
• Connector Gender: Female with an oval shape for secure electrical connection
• Fitting Gender: Female with 7/16 in. x 20 thread size for precise system mounting
• Material: Durable plastic and metal construction for long-lasting use
• Number of Terminals: 2 for reliable electrical contact
• Operating Pressure Range: Low cut-out at 3 PSI off and 27 PSI on
• Meets or exceeds OEM specifications for dependable performance

About the Four Seasons Pressure Switch Product Line

The Four Seasons Pressure Switch line focuses on high-quality HVAC pressure switches designed to maintain system integrity and safety. The 37805 model is part of this line, offering precise pressure monitoring with a low cut-out style switch that is system mounted. This ensures compatibility with various vehicle HVAC systems requiring accurate pressure control to prevent damage and maintain efficiency.

Detailed Product Description

The Four Seasons 37805 HVAC Pressure Switch is engineered to monitor refrigerant pressure within your vehicle's air conditioning system. Featuring a female oval connector and female fitting with a 7/16 in. x 20 thread size, this switch mounts directly to the system for accurate pressure sensing. Constructed from a combination of plastic and metal, it provides durability and resistance to typical automotive environmental factors. The switch operates within a pressure range that turns off at 3 PSI and turns on at 27 PSI, functioning as a low cut-out switch to protect the HVAC system from low-pressure damage. With two terminals, it ensures a secure electrical connection and meets or exceeds OEM standards for reliable replacement.

Common Applications and Issues Addressed

• Prevents compressor damage due to low refrigerant pressure
• Maintains proper HVAC system cycling for consistent cabin temperature
• Protects against system overpressure and underpressure conditions
• Helps diagnose pressure-related HVAC system failures
• Ensures safe operation of vehicle air conditioning components

Installation Notes and Tips

When installing the Four Seasons 37805 pressure switch, ensure the system is depressurized and the vehicle is off. The female fitting with 7/16 in. x 20 thread size requires proper torque to avoid leaks. Connect the female oval connector securely to maintain electrical continuity. This switch is system mounted, so verify the mounting location matches OEM specifications for your vehicle make and model. Always check for refrigerant leaks after installation and test system operation to confirm proper switch function.

Quality Assurance and Warranty

The Four Seasons Pressure Switch 37805 meets or exceeds OEM quality standards, providing reliable performance in automotive HVAC systems. Manufactured with durable plastic and metal materials, it is designed for longevity under typical operating conditions. While specific warranty details are not provided here, Four Seasons products generally come with a limited warranty covering defects in materials and workmanship. Consult product documentation or your supplier for exact warranty terms.