Limit Switch

Carrier HH18HA505 Limit Switch – Genuine OEM Rollout / High-Limit Safety Switch

Protect your HVAC system with the Carrier HH18HA505 Limit Switch, a factory-original OEM safety component engineered for Carrier, Bryant, and Payne equipment. This rollout/high-limit switch plays a vital role in furnace protection by monitoring temperature conditions and interrupting the electrical circuit if overheating occurs — helping safeguard your system and home.

Key Features & Benefits

• Precision Temperature Protection – Opens at approximately 235 °F and automatically resets (closes) near 195 °F, preventing unsafe temperature buildup.

• Automatic Reset Function – Restores operation once temperatures return to a safe range; no manual reset required.

• Genuine Carrier OEM Quality – Built to original equipment specifications for dependable performance and durability.

• Compact & Lightweight Design – Weighs about 0.02 lbs, making installation easy even in tight furnace assemblies.

• Wide Compatibility – Designed for use with Carrier, Bryant, and Payne furnaces and air handlers (verify model compatibility before purchase).

Why Choose the Carrier HH18HA505?

Using a genuine OEM limit switch ensures proper fit, accurate temperature response, and reliable safety operation — unlike generic replacements. Ideal for maintenance, repair, or replacement of worn or tripped switches.

Product Type: Rollout / High-Limit Switch
Part Number: HH18HA505
Brand: Carrier (OEM)

Ensure safe and efficient HVAC operation by replacing faulty safety switches with the trusted Carrier HH18HA505 Limit Switch.