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Part #: 20895

Four Seasons 20895 HVAC Cut-Off Switch

Pressure Switch
⚙️ 28 vehicles fit this part
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📦Pressure Switch
🚗Fitment: Buick, Oldsmobile, Pontiac, and Chevrolet, Century, Cutlass Ciera, 6000, Celebrity, and Sunbird
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Reliable Pressure Switch for Buick, Chevrolet, Oldsmobile, and Pontiac HVAC Systems

The Four Seasons Pressure Switch 20895 is designed to maintain optimal HVAC system performance in select Buick, Chevrolet, Oldsmobile, and Pontiac models. This system-mounted low cut-out switch ensures precise pressure control to protect your vehicle's air conditioning system.

  • Compatible with Buick Century, Chevrolet Celebrity, Oldsmobile Cutlass Ciera, Pontiac Sunbird, and other models
  • Operates with a low cut-out pressure range: turns off at 32 PSI and on at 44 PSI
  • Durable plastic and metal construction with a red color indicator
  • Features a 3/8 in. x 24 female fitting thread size for secure system mounting
  • Includes a male round connector with two terminals and harness connector 37222
  • Meets or exceeds OEM specifications for reliable performance

About the Four Seasons Pressure Switch Product Line

The Four Seasons Pressure Switch line focuses on precision-engineered HVAC cut-off switches designed to regulate system pressure effectively. The 20895 model is part of this line, offering a pressure-operated low cut-out switch that helps maintain system integrity by opening and closing at specific pressure points. This ensures your vehicle’s air conditioning system operates within safe parameters, reducing the risk of damage due to pressure fluctuations.

Detailed Product Description

The Four Seasons Pressure Switch 20895 is a pressure-operated HVAC cut-off switch that mounts directly to the system. It features a female fitting with a 3/8 in. x 24 thread size and a male round connector with two terminals, designed for easy integration with the existing harness (connector 37222). The switch operates by opening at 32 PSI and closing at 44 PSI, providing reliable low-pressure cut-out functionality. Constructed from a combination of plastic and metal, this switch is built to withstand the demands of automotive HVAC systems. Its red color aids in quick identification during maintenance or replacement.

Common Applications and Issues Addressed

  • Prevents compressor damage by cutting off operation at low refrigerant pressure
  • Helps maintain consistent air conditioning performance in Buick Century and Chevrolet Celebrity models
  • Protects HVAC system components in Oldsmobile Cutlass Ciera and Pontiac Sunbird from pressure-related failures
  • Resolves intermittent A/C shutdowns caused by faulty pressure switches
  • Ensures system safety by regulating pressure within specified limits

Installation Notes and Tips

  • Ensure the system is depressurized before removing the old pressure switch
  • Verify compatibility with your vehicle’s make and model, specifically Buick, Chevrolet, Oldsmobile, or Pontiac models listed
  • Use appropriate tools to avoid damaging the 3/8 in. x 24 female fitting thread
  • Connect the male round connector securely to the harness connector 37222
  • Test the HVAC system after installation to confirm proper switch operation

Quality Assurance and Warranty

The Four Seasons Pressure Switch 20895 meets or exceeds OEM standards, ensuring dependable performance and durability. Manufactured with high-quality plastic and metal materials, this switch is designed for long-term use in automotive HVAC systems. While specific warranty details should be confirmed with the point of purchase, Four Seasons products typically come with a limited warranty covering defects in material and workmanship.

BrandFour Seasons
Part Number20895
PositionPressure Switch
ColorRed
Comp Open/ClosedOpen
Connector GenderMale
Connector ShapeRound
DescriptionSwitch-Pressure /System Mount
Fitting GenderFemale
Fitting Thread Size3/8 in. x 24
Harness Connector37222
Item Included A Desc24606
Item Included A Qty.1
MaterialPlastic / Metal
Meets / Exceeds OEM?YES
Mnt Sys LocSystem Mounted
Number of Terminals2
Operate Psi Low Off32
Operate Psi Low On44
StylePressure
TypeLow Cut-Out

This part fits 28 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersPositionNotes
1992BuickCenturySedan2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1992BuickCenturyCoupe2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1992OldsmobileCutlass Ciera2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1991BuickCenturySedan2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1991BuickCenturyCoupe2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1991OldsmobileCutlass Ciera2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1991Pontiac60002.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1990BuickCenturySedan2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1990BuickCenturyCoupe2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1990ChevroletCelebrity2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1990OldsmobileCutlass Ciera2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1990Pontiac60002.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989BuickCenturySedan2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989BuickCenturyCoupe2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989ChevroletCelebrity2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989OldsmobileCutlass Ciera2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989Pontiac60002.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1988BuickCenturySedan2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1988BuickCenturyCoupe2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1988ChevroletCelebrity2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1988OldsmobileCutlass Ciera2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1988Pontiac60002.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1987BuickCenturySedan2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1987BuickCenturyCoupe2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1987ChevroletCelebrity2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1987OldsmobileCutlass Ciera2.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1987Pontiac60002.5LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1986PontiacSunbird1.8LL4N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; 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:

100426691112089520698920895A06989MT1231

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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