Carrier HH18HA586 Limit Switch

Description

The Carrier HH18HA586 is a factory-authorized OEM temperature limit switch that plays a critical safety role in heating systems. With its automatic-reset design, this snap-disc switch opens at high temperatures to protect your furnace from overheating, then closes again once temperatures drop to safe levels, helping prevent damage and maintain proper operation.

Key Features

• Reliable Overheat Protection: This limit switch is calibrated to open when the furnace interior reaches ~225 °F and re-close at ~185 °F, offering dependable high-temperature cutoff protection.
• Automatic Reset: Unlike manual-reset switches, the HH18HA586 resets itself once temperature drops, reducing the need for manual intervention and keeping cycles running smoothly.
• OEM Quality & Compatibility: As a genuine Carrier part, this switch ensures proper fit and function — supporting system reliability and helping maintain warranty coverage.
• Disc-Type Design: Features a compact bimetallic disc form factor that mounts easily and delivers consistent thermal response.
• Wide System Support: Compatible with many Carrier, Bryant, and Payne furnace models, making this a versatile option for HVAC service techs and maintenance teams.
• Durable & Cost Effective: With robust construction and inexpensive replacement cost, it’s a smart component to keep in stock for common safety switch repairs.