Carrier HH18HA166 Limit Switch 318423-701 this single-phase motor delivers a

this single-phase motor delivers a consistent 3000 RPM to maintain optimal draft pressure and combustion efficiency

and 1/8" connection sizing for a drop-in installation

Integrating this OEM replacement part is essential for contractors prioritizing system uptime and peak HVAC energy efficiency

High-Accuracy Detection: Utilizing a tri-color crystal element

Common failure points include scorched contacts due to low voltage or faulty start capacitors

Carrier HH18HA166 Limit Switch 318423-701 this single-phase motor delivers aThe Carrier HH18HA166 is a critical safety component designed for precise thermal monitoring in residential and light commercial HVAC systems. This 160F CO Auto Limit Switch operates as a primary high limit protection device, featuring a Normally Closed (NC) circuit that opens upon reaching its fixed setpoint of 160F. As a genuine OEM replacement part, it ensures seamless integration with Carrier, Bryant, and Payne furnaces, specifically replacing the