Carrier HH18HA502 Limit Switch

140-180F AUTO Limit Switch

Carrier HH18HA502 Limit Switch – 140–180°F Auto Reset | Genuine OEM Replacement Part

The Carrier HH18HA502 Limit Switch is a genuine OEM high-limit safety device designed to protect your furnace from overheating. Engineered for reliable performance, this auto-reset hi-limit switch activates when temperatures exceed safe operating levels, preventing system damage and ensuring safe furnace operation.

Built to Carrier’s strict quality standards, the HH18HA502 offers dependable temperature control and compatibility with a wide range of Carrier heating units.

Key Features

• Model: HH18HA502

• Type: Hi Limit Switch

• Temperature Range: 140°F – 180°F

• Function: Auto Reset

• Genuine Carrier OEM Replacement Part

• Protects furnace from overheating

• Ensures safe and efficient system operation

Product Overview

The Carrier HH18HA502 Hi Limit Switch detects excessive heat within the furnace and automatically resets once temperatures return to safe levels. This essential safety component helps prevent heat exchanger damage, limit failures, and system shutdowns caused by overheating.

Ideal for:

• Residential furnaces

• HVAC service and repair

• Preventive maintenance and system protection

Compatibility

This authentic Carrier component fits many popular models, including:

• 58CTA070-11108

• 58CTA070-10108

• 58CTA070-12108
  …and additional Carrier furnace units (check model specifications for full compatibility).

Why Choose a Genuine OEM Carrier Part?

• Designed specifically for Carrier HVAC systems

• Ensures proper fit, performance, and safety

• Provides long-lasting and dependable temperature control

Restore safe and optimal performance to your heating system with the Carrier HH18HA502 140–180°F Auto Limit Switch—the trusted OEM solution for furnace protection.