Four Seasons 20924 HVAC Binary Switch

Four Seasons 20924 HVAC Binary Pressure Switch

The Four Seasons Pressure Switch, part number 20924, is a system-mounted HVAC binary switch built for pressure-based A/C circuit control. It uses a rectangular female connector, a 4-terminal layout, and a weather-pack design for secure electrical connection in demanding underhood conditions.

Four Seasons Pressure Switch 20924 is a direct-fit style replacement for select Ford, Lincoln, and Mercury vehicles, including Mustang, Taurus, Windstar, Escort, and Contour applications. It meets or exceeds OEM requirements and uses an M10 x 1.25 female fitting with a closed-comp operation profile.

Key Features

• Brand: Four Seasons Pressure Switch
• Part number: 20924
• HVAC binary switch for system-mounted pressure control
• Rectangular female connector with 4 terminals
• Weather-pack connector design
• Steel construction with white housing
• Female fitting, M10 x 1.25 thread size
• Closed-comp operation
• Meets or exceeds OEM specifications
• Operate pressure range: low off 270 psi, low on 305 psi

Product Details

This HVAC pressure switch monitors refrigerant system pressure and helps manage compressor operation in the A/C circuit. It is a Four Seasons Pressure Switch engineered for Ford Mustang, Ford Taurus, and Mercury Cougar applications, along with additional Ford, Lincoln, and Mercury fitments listed below. The binary switch format and system-mounted design make it a practical replacement when the original pressure switch has failed or is no longer responding correctly.

This part cross-references UAC SW10006C for the same application.

Common Problems It Can Help Solve

• A/C compressor not engaging
• Compressor cycling incorrectly
• Pressure switch electrical fault codes
• Intermittent HVAC system operation
• Loss of refrigerant pressure signal to the control circuit

Installation Notes and Tips

• Verify the connector shape, terminal count, and M10 x 1.25 thread before installation.
• Confirm the vehicle uses the listed pressure-switch application and not a different HVAC sensor or transducer.
• Inspect the connector and wiring for corrosion or heat damage before connecting the new switch.
• Recover refrigerant properly and follow approved HVAC service procedures before removing the original component.
• After installation, check system operation and confirm the compressor cycles normally.

Quality Assurance

Four Seasons builds this pressure switch to meet or exceed OEM requirements, supporting dependable replacement performance for HVAC service work on compatible Ford, Lincoln, and Mercury platforms.

Fitment

• Fits 1998-2003 Ford Escort, Pressure Switch
• Fits 1994-1996 Ford Escort, Pressure Switch
• Fits 1995-2000 Ford Contour, Pressure Switch
• Fits 1998-2000 Ford Crown Victoria, Pressure Switch
• Fits 1998-2000 Ford Grand Marquis, Pressure Switch
• Fits 1994-2000 Ford Mustang, 4 Pin; Pressure Switch
• Fits 1998-2000 Lincoln Town Car, Pressure Switch
• Fits 1999-2000 Mercury Cougar, Pressure Switch
• Fits 1995-1997 Mercury Cougar, Pressure Switch
• Fits 1998-2000 Mercury Grand Marquis, Pressure Switch
• Fits 1995-2000 Mercury Mystique, Pressure Switch
• Fits 1995-1999 Ford Sable, Pressure Switch
• Fits 1994-1999 Ford Taurus, Pressure Switch
• Fits 1995-1999 Mercury Sable, Pressure Switch
• Fits 1994-1999 Mercury Tracer, Pressure Switch
• Fits 1995-1998 Ford Windstar, Pressure Switch
• Fits 1994-1997 Ford Thunderbird, Pressure Switch
• Fits 1995 Ford Cougar, Pressure Switch
• Fits 1994 Ford Sable, w/ R134a; Pressure Switch
• Fits 1994 Lincoln Continental, Pressure Switch
• Fits 1994 Mercury Sable, w/ R134a; Pressure Switch