What is the primary purpose of the fan in an oil burner?

The primary purpose of the fan in an oil burner is to mix air with fuel. The correct option highlights the essential role of the fan in the combustion process. For efficient and complete combustion of the oil, it is crucial to have the right mixture of fuel and air. The fan provides the necessary airflow to ensure that the oil is properly atomized and mixed with the air, which is essential for generating the right flame characteristics and achieving efficient heating.

By optimizing this air-fuel mixture, the burner can achieve higher combustion efficiency and reduced emissions. This process is vital for the overall performance of the heating system, ensuring that it operates effectively and safely.

While heating the oil, improving combustion, and regulating temperature are important functions within the broader system, they do not specifically encapsulate the primary role of the fan. The fan's function directly impacts the mixing process, which is a critical step in the combustion cycle of an oil burner.