What is the purpose of the oil filter in an oil heating system?

The oil filter's primary purpose in an oil heating system is to remove impurities from the oil. Over time, the oil can accumulate dirt, debris, and contaminants that can hinder the efficient operation of the heating system. If these impurities are not removed, they can block fuel lines, clog burner nozzles, and negatively impact combustion efficiency, leading to incomplete burning of the fuel. By filtering the oil, the system ensures that only clean oil is supplied to the burner, which helps maintain optimal performance, efficiency, and longevity of the heating system.

The other listed purposes, while related to the functioning and maintenance of the heating system, do not accurately reflect the main role of the oil filter. Regulating the oil flow, enhancing combustion, and cooling the oil are functions typically associated with other components in the system.