Premix burners are devices used in heating systems that mix fuel and air before combustion occurs. This process allows for a more efficient and cleaner burn, reducing emissions and improving energy use. They are commonly found in applications like industrial furnaces and residential heating systems. These burners operate by creating a homogeneous mixture of fuel, such as natural gas, and air, which enhances combustion efficiency. By ensuring that the fuel is evenly distributed, premix burners can achieve higher temperatures and better control over the heating process, making them a popular choice in modern heating technology.