Four Seasons 37338 HVAC Evaporator Temperature Switch

Four Seasons 37338 HVAC Evaporator Temperature Switch

Four Seasons 37338 is a temperature switch for HVAC evaporator and ambient sensing applications. It uses a rectangular female connector, a 2-terminal layout, and a plastic body for straightforward electrical integration in the climate control circuit.

Key Features

• HVAC evaporator temperature switch for temperature monitoring in the climate system
• Rectangular female connector for a secure electrical connection
• 2-terminal design for simplified circuit routing
• Plastic construction
• Miscellaneous mounting system location
• Four Seasons Temperature Switch line part number 37338

Product Details

This Four Seasons Temperature Switch line component is built for HVAC control applications where evaporator or ambient temperature input is required. Part number 37338 is listed as a switch-temp/ambient unit and is commonly searched as Four Seasons 37338 HVAC evaporator temperature switch, Four Seasons 37338 temperature switch, and temperature switch replacement for climate control service. It cross-references Gates 1520 for the same application. Vehicle shoppers looking for Honda Civic HVAC temperature switch replacement or similar make/model climate control service should verify connector style, terminal count, and mounting location before ordering.

Common Issues This Part Can Address

• Inaccurate evaporator temperature signal to the HVAC control system
• Intermittent compressor cycling caused by temperature switch faults
• Climate control performance issues tied to ambient or evaporator sensing
• Electrical connection problems at the switch connector
• HVAC system operation concerns related to a failed 2-terminal switch

Installation Notes and Tips

Confirm the rectangular female connector, 2-terminal configuration, and mounting location match the original part before installation. Compare the existing switch body and electrical connector to the replacement part number 37338 to ensure proper HVAC fitment. For vehicle-specific service, verify the application against the original equipment part and the vehicle’s climate control layout.

Quality Assurance

Four Seasons is a recognized aftermarket brand for HVAC service parts, and the Temperature Switch line is cataloged for direct replacement use in climate control systems. Part number 37338 is specified by connector shape, terminal count, material, and switch type to support accurate parts matching.