Four Seasons 20929 HVAC Binary Switch

Reliable Pressure Switch for Lexus, Toyota, and Mitsubishi HVAC Systems

The Four Seasons Pressure Switch part number 20929 is designed to maintain optimal HVAC system performance in select Lexus, Toyota, and Mitsubishi vehicles. This system-mounted pressure switch ensures accurate pressure monitoring and control, contributing to efficient climate control operation.

• Brand: Four Seasons
• Brand Line: Pressure Switch
• Part Number: 20929
• Connector Shape: Rectangular, Male
• Color: Gray
• Material: Steel
• Fitting Thread Size: M11 x 1.00
• Number of Terminals: 2
• Operate PSI Low On/Off: 29/28 PSI
• Style: Binary Pressure Switch
• Weather Pack Compatible
• Meets or Exceeds OEM Specifications

About the Four Seasons Pressure Switch Product Line

The Four Seasons Pressure Switch line focuses on delivering precise pressure sensing components for automotive HVAC systems. The 20929 model is a binary pressure switch designed for system mounting, providing reliable open/closed pressure detection to regulate system operation. This product line emphasizes OEM compatibility and durability, ensuring consistent performance in demanding vehicle environments.

Detailed Product Description

The Four Seasons 20929 Pressure Switch is a system-mounted HVAC binary switch constructed from durable steel with a gray rectangular male connector. It features a fitting thread size of M11 x 1.00 and includes two terminals for secure electrical connections. The switch operates within a narrow pressure range, activating at 29 PSI and deactivating at 28 PSI, which helps maintain proper system pressure and prevents damage from pressure fluctuations. Its weather pack compatibility ensures resistance to environmental factors, making it suitable for use in various Lexus, Toyota, and Mitsubishi models.

Common Applications and Issues Addressed

• Maintains proper HVAC system pressure in Lexus GX460 and Toyota Land Cruiser
• Prevents compressor damage due to pressure irregularities in Mitsubishi Montero Sport
• Ensures efficient climate control operation in Toyota Tacoma and Tundra
• Helps avoid system shutdowns caused by pressure switch failure in Lexus SC300 and Toyota Supra
• Supports reliable HVAC function in Mitsubishi Eclipse and Diamante models

Installation Notes and Tips

• Ensure the system is depressurized before installation to avoid injury
• Verify the M11 x 1.00 thread size matches the vehicle’s mounting port
• Confirm connector orientation and secure the rectangular male connector firmly
• Check for proper sealing to prevent leaks and ensure accurate pressure readings
• Test the switch operation at specified PSI levels after installation

Quality Assurance and Warranty

The Four Seasons Pressure Switch 20929 meets or exceeds OEM standards for fit, form, and function. Manufactured with high-quality steel and designed for system mounting, this switch offers durability and reliable performance. It includes one unit per package and is backed by Four Seasons’ quality assurance protocols. Please refer to Four Seasons’ official warranty terms for coverage details.