this hydronic heating controller manages up to 8 stages out of the box

Dual-Bulb System Support: High-output 55W design provides the necessary intensity for systems requiring two-lamp configurations

Optimized Airflow Management: Manages blower "on/off" delay settings to maximize heat exchanger efficiency and improve overall indoor comfort during heating cycles

This unit serves as the direct replacement for the obsolete Carrier HD52GE577

Heil Quaker ICP 1188533 Coil/Header Kit 318973-401 this hydronic heating controller managesThe Heil Quaker ICP 1188533 Coil Header Kit is a precision engineered replacement evaporator coil and header assembly designed for specific ICP manufactured HVAC units. This kit is critical for restoring system pressure balance and thermal transfer efficiency in split systems and package units where the original header assembly has suffered from stress fractures or refrigerant leaks. As an OEM HVAC replacement part, it ensures exact fitment,