Carrier 338096-703 Limit Switch, L165-20F

Carrier 338096-703 Limit Switch, L165-20F

The Carrier 338096-703 is an OEM replacement limit switch designed to protect furnaces from dangerous overheating conditions. Designated L165-20F, this limit switch is engineered to open at 165°F and reset at approximately 145°F (20°F differential), providing precise thermal protection that keeps your heating system operating safely and efficiently.

Why Limit Switches Matter

A limit switch is a critical safety component in any forced-air furnace. When supply air temperatures exceed the safe operating threshold, the limit switch interrupts the burner circuit, preventing heat exchanger damage, component failure, and potential fire hazards. Using a genuine Carrier replacement ensures the switch performs to the exact specifications your equipment was designed around.

Key Features

• OEM Carrier replacement part — engineered for precise fit and function
• L165-20F designation: opens at 165°F, resets at approximately 145°F
• 20°F fixed differential for reliable, repeatable thermal protection
• Protects heat exchanger and furnace components from overheating damage
• Direct replacement for compatible Carrier furnace models
• Helps maintain system safety, efficiency, and longevity

Application

This limit switch is intended as a direct OEM replacement for compatible Carrier furnace systems. Always verify compatibility with your specific furnace model number before installation. Proper installation by a qualified HVAC technician is recommended.

Specifications

• Part Number: 338096-703
• Type: Limit Switch
• Model Designation: L165-20F
• Open Temperature: 165°F
• Differential: 20°F
• Reset Temperature: Approximately 145°F
• Brand: Carrier