The Carrier HK42FZ035 Furnace Control Circuit Board is a crucial part for maintaining and repairing central furnaces in HVAC systems. This board is designed to be compatible with Carrier and Bryant brands, specifically models HK42FZ021, HK42FZ024, HK42FZ022, and HK42FZ026. With a voltage of 120V and a power phase of 1 Phase, this unit is a reliable and efficient choice for controlling furnace operations. The board is lightweight at 1 lb and thin with a thickness of 1/4 inch, making it easy to install and operate in various heating systems.