Ensure your furnace operates safely and efficiently with this genuine OEM 3″ high limit switch from Carrier — the HH12ZB170. Designed for gas furnaces, this auto reset limit switch monitors internal temperatures and protects your system by opening at ~170 °F and closing around ~130 °F.
Key Features
- Factory authorized part ensures correct fit, compatibility and performance for Carrier, Bryant, and Payne furnaces.
- Temperature rating: opens at around 170 °F and closes at ~130 °F — ideal for controlling high limit conditions in HVAC systems.
- Compact 3″ size makes replacement fast and easy, minimizing downtime in your heating system.
- Auto reset functionality allows the furnace to resume normal operation once temperature returns to safe levels — reducing unnecessary system lock outs.
- Versatile compatibility: works in a wide range of residential and light commercial gas furnaces, helping you maintain safety standards and system warranty compliance.
