Description
Restore reliable operation of your HVAC system with the Carrier HK42FZ064 control board, an authentic Factory Authorized Part™ designed by Carrier for precision, compatibility and long-term performance. This 24-volt control board governs ignition, blower, safety circuits and diagnostics for many residential and light-commercial furnaces. It’s built to OEM specifications to provide a drop-in, high-quality replacement for older or faulty boards.
Key Features
- Exact OEM fit & function – Engineered to Carrier’s original design standards, the HK42FZ064 ensures precise compatibility and avoids the risks of mismatched parts.
- 24 V low-voltage control – Works with standard HVAC control wiring and integrates seamlessly with compatible furnace systems.
- Wide model compatibility – Replaces earlier part numbers such as HK42FZ051, HK42FZ055 and HK42FZ043.
- Durable & reliable construction – Built with corrosion-resistant PCBs and designed for HVAC environment reliability.
- Efficient diagnosis & service – Helps restore diagnostic functions and fault-indicating LEDs, aiding quicker service calls and system restoration.











