Industrial Durability: Rugged SPDT configuration is designed for high-cycle environments

000 BTU capacity and standard 1/2" NPT inlet/outlet sizes

Optimized Airflow: Specifically designed for 24-inch condenser fan assemblies to maintain factory-spec CFM and heat transfer efficiency

The HN52KD020 is the current HVAC contactor replacement for the discontinued HN52KD025 part number

Utica-Dunkirk 550003151 Flame Sensor Replacement Kit R-22 Industrial Durability: Rugged SPDT configurationThe Utica Dunkirk 550003151 Flame Sensor Replacement Kit is a critical OEM boiler part designed for precise flame rectification in high efficiency heating systems. As a veteran tech knows, a fouled or oxidized sensor is the leading cause of intermittent furnace flame sensor failure and nuisance ignition lockouts. This genuine Utica Dunkirk replacement ensures the control board receives a steady microamp signal, maintaining burner continuity and system