Four Seasons 36670 HVAC Pressure Switch

Four Seasons 36670 HVAC Pressure Switch

The Four Seasons 36670 pressure switch is a system-mounted HVAC condenser fan switch built for pressure-based control in automotive air conditioning systems. It uses a wire lead connection, a 2-terminal layout, and a black connector for straightforward integration in the proper application.

As part of the Four Seasons Pressure Switch line, this component is made for HVAC service work where accurate condenser fan operation matters. It meets or exceeds OEM requirements and uses a plastic and metal construction with a 3/8 in. x 24 fitting thread size.

Key Features

• Four Seasons Pressure Switch, part number 36670
• HVAC pressure switch for condenser fan control
• System-mounted design with wire lead connector
• 2-terminal configuration with black connector
• 3/8 in. x 24 fitting thread size
• Plastic / metal construction
• Meets or exceeds OEM specifications
• Operate pressure points: 150 psi off, 215 psi on

Detailed Description

The Four Seasons 36670 is an HVAC pressure switch used in condenser fan circuits to monitor system pressure and trigger fan operation at the specified pressure thresholds. This type of switch is commonly searched as a condenser fan pressure switch, A/C pressure switch, or system-mounted HVAC switch for automotive repair. If you are servicing a vehicle air conditioning system and need a direct replacement pressure switch, Four Seasons 36670 provides the correct style and connection layout for the intended application. This part number 36670 is also referenced in cross-application searches for select OE-style replacements, including 20PS134.

For vehicle-specific searches, this part is often found by shoppers looking for HVAC pressure switch replacement for Honda Civic, Toyota Camry, or Ford F-150 applications where the system uses a threaded, wire-lead pressure switch design. Always verify the connector style, thread size, and pressure settings against the original component before installation.

What It Helps Fix

• Condenser fan not cycling on at the correct pressure
• A/C system pressure control faults
• Intermittent compressor or fan operation related to switch failure
• HVAC warning symptoms caused by a worn pressure switch
• Incorrect fan engagement in a pressure-controlled A/C circuit

Installation Notes and Tips

Confirm the original switch uses a 3/8 in. x 24 thread, wire lead connector, and 2-terminal layout before ordering. Compare the pressure activation points to the removed part to ensure the replacement matches the vehicle’s HVAC control strategy. Because this is a system-mounted pressure switch, inspect the surrounding A/C components for leaks, corrosion, or damaged wiring during service. For fitment-based searches, use the exact vehicle application data and verify the part number 36670 against the original unit.

Quality Assurance

Four Seasons states that this pressure switch meets or exceeds OEM requirements. That makes it a practical OE-style replacement for HVAC service where correct pressure response and connector compatibility are required.