HomeHVAC > A/C Condenser and EvaporatorFour Seasons 36669 A/C Condenser Fan Switch
Part #: 36669

Four Seasons 36669 A/C Condenser Fan Switch

Pressure Switch
⚙️ 34 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Pressure Switch
🚗Fitment: Chevrolet, Pontiac, Cadillac, Oldsmobile, and Buick, Corvette, Camaro, Firebird, Lumina, Cimarron, Cavalier, Firenza, Skylark, and Somerset Regal
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Overview of Four Seasons Pressure Switch 36669

The Four Seasons Pressure Switch 36669 is a system-mounted A/C condenser fan switch designed for select Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac vehicles. Engineered to meet or exceed OEM specifications, this pressure switch ensures reliable operation of the condenser fan in your vehicle's HVAC system.

  • Connector color: Red with male terminals
  • Terminal quantity: 2
  • Fitting thread size: 3/8 in. x 24
  • Material: Durable plastic and metal construction
  • Operating pressure range: 185 psi (off) to 250 psi (on)
  • System-mounted design for direct installation
  • Compatible harness connector: 37227
  • Includes one item 24606

About the Four Seasons Pressure Switch Product Line

The Pressure Switch line from Four Seasons focuses on pressure-activated components that regulate HVAC system functions. This A/C condenser fan switch is part of that line, providing precise control of the condenser fan based on system pressure. Its design supports efficient cooling and helps maintain optimal air conditioning performance in compatible vehicles.

Detailed Product Description

The Four Seasons Pressure Switch 36669 is a pressure-style condenser fan switch that activates the fan when system pressure reaches 250 psi and deactivates it at 185 psi. Featuring a red male connector with two terminals, it is designed for system-mounted installation using a 3/8 in. x 24 fitting thread size. Constructed from a combination of plastic and metal, this switch offers durability and reliable performance. It is compatible with a range of GM vehicles including the Buick Skylark, Cadillac Cimarron, Chevrolet Camaro, Cavalier, Corvette, Lumina, Oldsmobile Firenza, and Pontiac Firebird.

Common Applications and Issues Addressed

  • Regulates condenser fan operation to prevent overheating
  • Maintains proper A/C system pressure for efficient cooling
  • Prevents compressor damage due to improper fan cycling
  • Ensures consistent airflow through the condenser
  • Helps avoid system shutdowns caused by pressure irregularities

Installation Notes and Tips

  • Verify compatibility with your vehicle’s make and model before installation
  • Use the correct harness connector (part number 37227) for proper electrical connection
  • Ensure the fitting thread size matches the system mount location
  • Inspect the mounting area for debris or damage prior to installation
  • Follow manufacturer torque specifications to avoid leaks or damage

Quality Assurance and Warranty

This Four Seasons Pressure Switch 36669 meets or exceeds OEM standards for fit, form, and function. Manufactured with quality plastic and metal materials, it is designed for long-lasting performance in demanding automotive HVAC environments. Warranty coverage details should be confirmed with the product documentation or supplier.

BrandFour Seasons
Part Number36669
PositionPressure Switch
Connector ColorRed
Connector GenderMale
DescriptionSwitch-Pressure /System Mount
Fan Open/ClosedClosed
Fitting Thread Size3/8 in. x 24
Harness Connector37227
Item Included A Desc24606
Item Included A Qty.1
MaterialPlastic / Metal
Meets / Exceeds OEM?YES
Mnt Sys LocSystem Mounted
Operate Psi Med Off185
Operate Psi Med On250
StylePressure
Terminal Quantity2
TypeCondenser Fan

This part fits 34 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1993ChevroletCorvetteN/AHi-Side Mounted; Pressure Switch
1992ChevroletCamaroN/AHi-Side Mounted; Pressure Switch
1992ChevroletCorvetteN/AHi-Side Mounted; Pressure Switch
1992PontiacFirebird3.1LV6N/AHi-Side Mounted; Pressure Switch
1991ChevroletCamaroN/AHi-Side Mounted; Pressure Switch
1991ChevroletCorvetteN/AHi-Side Mounted; Pressure Switch
1991PontiacFirebird3.1LV6N/AHi-Side Mounted; Pressure Switch
1990ChevroletCamaroN/AHi-Side Mounted; Pressure Switch
1990ChevroletCorvetteN/AHi-Side Mounted; Pressure Switch
1990ChevroletLumina2.5LL4N/AHi-Side Mounted; Pressure Switch
1990PontiacFirebird3.1LV6N/AHi-Side Mounted; Pressure Switch
1989ChevroletCamaroN/AHi-Side Mounted; Pressure Switch
1989ChevroletCorvetteN/AHi-Side Mounted; Pressure Switch
1989PontiacFirebird2.8LV6N/AHi-Side Mounted; Pressure Switch
1988ChevroletCamaroN/AHi-Side Mounted; Pressure Switch
1988ChevroletCorvetteN/AHi-Side Mounted; Pressure Switch
1988PontiacFirebird2.8LV6N/AHi-Side Mounted; Pressure Switch
1987CadillacCimarron2.8LV6N/AHi-Side Mounted; Pressure Switch
1987ChevroletCamaroN/AHi-Side Mounted; Pressure Switch
1987ChevroletCorvetteN/AHi-Side Mounted; Pressure Switch
1987PontiacFirebird2.8LV6N/AHi-Side Mounted; Pressure Switch
1986CadillacCimarron2.8LV6N/AHi-Side Mounted; Pressure Switch
1986ChevroletCamaroN/AHi-Side Mounted; Pressure Switch
1986ChevroletCavalier2.8LV6N/AHi-Side Mounted; Pressure Switch
1986ChevroletCorvetteN/AHi-Side Mounted; Pressure Switch
1986OldsmobileFirenza2.8LV6N/AHi-Side Mounted; Pressure Switch
1986PontiacFirebird2.8LV6N/AHi-Side Mounted; Pressure Switch
1985BuickSkylarkN/AHi-Side Mounted; Pressure Switch
1985CadillacCimarron2.8LV6N/AHi-Side Mounted; Pressure Switch
1985ChevroletCamaroN/AHi-Side Mounted; Pressure Switch
1985ChevroletCavalierN/AHi-Side Mounted; Pressure Switch
1985ChevroletCorvetteN/AHi-Side Mounted; Pressure Switch
1985OldsmobileFirenza2.8LV6N/AHi-Side Mounted; Pressure Switch
1985PontiacFirebird2.8LV6N/AHi-Side Mounted; 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:

11136669140789701523511711754207105211418212418366695047701756A6414AC8700ACD152351HS418MT0792SW1136

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