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Four Seasons 20953 HVAC Binary Switch
Four Seasons 20953 Pressure Switch Overview
Four Seasons 20953 is a system-mounted HVAC binary pressure switch built for pressure monitoring in the air conditioning circuit. It uses a rectangular female connector, a 2-terminal layout, and a steel body with a male 3/8 in. x 24 fitting thread size for direct service replacement.
Compatible with select Mazda HVAC pressure switch applications, this part is a direct-fit option for 1993 Mazda 626, 1992-1993 Mazda MX-3, and 1992-1993 Mazda MX-6. The Four Seasons Pressure Switch line focuses on pressure-based control for A/C system operation, helping maintain proper compressor circuit response.
Key Features
- Four Seasons Pressure Switch part number 20953
- Binary pressure switch style for HVAC system control
- System-mounted design with open compressor switch state
- Rectangular female connector with 2 terminals
- Steel construction for service replacement use
- Male fitting with 3/8 in. x 24 thread size
- Meets or exceeds OEM requirements
Detailed Product Information
This HVAC binary switch is used in pressure-sensitive air conditioning circuits where the system needs a clear open/closed signal based on refrigerant pressure. Four Seasons 20953 is built for direct replacement service on Mazda 626, MX-3, and MX-6 applications listed in the fitment data. If you are searching for a 1993 Mazda 626 pressure switch or a 1992-1993 Mazda MX-6 HVAC pressure switch, this part number is the relevant match.
This part cross-references UAC SW11217C for the same application.
Common Issues This Part May Address
- A/C compressor not engaging due to pressure switch failure
- Intermittent compressor cycling from an inaccurate pressure signal
- HVAC system shutdown caused by an open switch condition
- Faulty pressure-based control in the air conditioning circuit
- Service replacement needs for a worn or damaged system-mounted switch
Installation Notes and Tips
Verify connector shape, terminal count, and fitting thread size before installation. Confirm the vehicle uses the listed system-mounted pressure switch configuration and match the replacement to the original part number 20953 when servicing Mazda 626, MX-3, or MX-6 HVAC systems. Inspect the connector and fitting surfaces for wear or contamination before reconnecting the A/C circuit.
Quality Assurance
Four Seasons states that this pressure switch meets or exceeds OEM requirements, making it a service-grade replacement for the listed Mazda applications.
| Brand | Four Seasons |
|---|---|
| Part Number | 20953 |
| Position | Pressure Switch |
| Comp Open/Closed | Open |
| Connector Gender | Female |
| Connector Shape | Rectangular |
| Description | Switch-Pressure /System Mount |
| Fitting Gender | Male |
| Fitting Thread Size | 3/8 in. x 24 |
| Item Included A Desc | 24606 |
| Item Included A Qty. | 1 |
| Material | Steel |
| Meets / Exceeds OEM? | YES |
| Mnt Sys Loc | System Mounted |
| Number of Terminals | 2 |
| Style | Binary |
| Type | Pressure |
This part fits 5 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1993 | Mazda | 626 | N/A | Pressure Switch |
| 1993 | Mazda | MX-3 | N/A | Pressure Switch |
| 1993 | Mazda | MX-6 | N/A | Pressure Switch |
| 1992 | Mazda | MX-3 | N/A | Pressure Switch |
| 1992 | Mazda | MX-6 | N/A | Pressure Switch |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.