This furnace control board is a great addition to your HVAC and refrigeration system. It is designed for use with Carrier and Bryant furnaces, making it a versatile choice for your home or business. The board is easy to install and use, ensuring that you can adjust the temperature of your space with ease. With its durable construction and reliable performance, this furnace control board is a must-have for anyone who wants to maintain the comfort of their home or business. It is compatible with a range of furnace models, including the Carrier Bryant HK42FZ and HK42FZ034. Upgrade your HVAC and refrigeration system today with this high-quality furnace control board.