Four Seasons 35866 HVAC Cut-Off Switch

Reliable HVAC Pressure Switch for Vehicle Climate Control

The Four Seasons Pressure Switch 35866 is designed to maintain optimal HVAC system performance by monitoring pressure levels and providing a low cut-out function. This system-mounted switch is engineered for compatibility with various vehicle makes and models, ensuring precise control and protection of your automotive air conditioning system.

• Brand: Four Seasons
• Brand Line: Pressure Switch
• Part Number: 35866
• Type: Low cut-out pressure switch
• Color: Black
• Material: Durable plastic and metal construction
• Connector: Wire lead with female fitting
• Fitting Thread Size: 7/16 in. x 20
• Number of Terminals: 2
• Mounting Location: System mounted
• OEM Compliance: Meets or exceeds OEM specifications

About the Four Seasons Pressure Switch Product Line

The Four Seasons Pressure Switch product line focuses on precision-engineered HVAC cut-off switches that regulate system pressure to protect vehicle air conditioning components. The Pressure Switch 35866 is part of this line, offering reliable open/closed pressure sensing functionality with a low cut-out style to prevent system damage. This line is designed to meet or exceed OEM standards, providing dependable performance across a range of automotive HVAC applications.

Detailed Product Description

The Four Seasons Pressure Switch 35866 features a black plastic and metal body designed for durability and long service life. It includes a wire lead connector with a female fitting and a 7/16 in. x 20 thread size for secure system mounting. The switch operates in an open state and is equipped with two terminals to ensure accurate pressure monitoring. Its low cut-out style helps protect the HVAC system by interrupting operation when pressure falls below a specified threshold. This part is compatible with various vehicle makes and models requiring a system-mounted pressure switch with these specifications.

Common Applications and Issues Addressed

• Prevents compressor damage due to low refrigerant pressure
• Maintains proper HVAC system pressure for efficient cooling
• Protects against system overpressure and potential leaks
• Ensures reliable operation of automotive air conditioning systems
• Helps diagnose pressure-related HVAC system failures

Installation Notes and Tips

• Verify thread size (7/16 in. x 20) matches vehicle specifications
• Ensure system is depressurized before installation
• Mount switch securely in the designated system location
• Connect wire lead terminals properly to avoid electrical faults
• Test system pressure after installation to confirm correct operation

Quality Assurance and Warranty

The Four Seasons Pressure Switch 35866 meets or exceeds OEM quality standards, ensuring reliable performance and durability. Manufactured with high-quality plastic and metal materials, this switch is designed for long-term use in automotive HVAC systems. Warranty coverage details should be confirmed with the product supplier or manufacturer.