Carrier HH18HA509 Limit Switch 30067439-890 For experienced contractors

For experienced contractors

refer to the specific furnace manual to determine if a separate high-altitude pressure switch is required for your installation site

Its single-phase induction design utilizes a multi-speed tap configuration for optimized airflow balancing

The Trane CTR6958 Motor Protector and Oil Control is a critical diagnostic and safety component designed for commercial HVAC systems

Broad Compatibility: Rated for "All Range" non-corrosive refrigerants including R-22 and R-134A

Carrier HH18HA509 Limit Switch 30067439-890 For experienced contractorsThe Carrier HH18HA509 Limit Switch is a critical OEM replacement part engineered for precise thermal protection in Carrier, Bryant, and Payne furnaces. This high temperature limit switch operates as a normally closed safety device, designed to open the electrical circuit if the heat exchanger exceeds safe operating parameters. Rated for a 155F195F range, it features an automatic reset mechanism that restores continuity once temperatures drop below the