the "HH" style core version is often preferred by technicians for higher acid and wax removal

Direct OEM replacement ensures exact mounting and terminal alignment for faster field installations

The CNT4364 is specifically designed for residential packaged heat pumps with two coils (such as 2WC*

Designed as a direct replacement for existing PopTop series installations

preventing system hunting and optimizing energy use

Weil McLain 510-312-167 Transformer 30067439-890 the "HH" style core versionThe Weil McLain 510 312 167 is a mission critical combination transformer and DPST relay assembly designed for seamless integration into Weil McLain boiler control circuits. This factory spec component serves as a robust 120 24 volt step down transformer, providing a consistent 40 VA power rating to drive low voltage ignition systems, zone valves, and auxiliary controls. Engineered for high demand hydronic environments, the 510 312 167 relay assembly