The pressure-actuated bellows design provides immediate response to pressure fluctuations without the hysteresis common in sliding-part valves

technicians ensure the refrigerant pressure regulation remains within safe operating parameters

What belt sizes are compatible with this variable groove pulley

It utilizes a full port design to ensure unrestricted flow and minimal pressure drop across the line

Carrier HK42FZ094 Control Board 322057-301 The pressure-actuated bellows design providesThe Carrier HK42FZ094 Control Board is a high performance integrated furnace control (IFC) designed to manage the critical ignition, blower, and safety sequences within Carrier, Bryant, and Payne residential furnaces. As a genuine OEM replacement part, this board provides a verified solution for service technicians addressing intermittent heating failures or "no heat" calls. This HVAC circuit board replacement integrates a 3 amp blade fuse for low