Oil burners in conventional oil furnaces operate on which type of draft?

In conventional oil furnaces, oil burners typically operate on forced draft. This system utilizes a fan to push air into the combustion chamber, allowing for better mixing of the fuel and air, which enhances the efficiency of the combustion process. Using a forced draft helps in providing a consistent air supply, which is critical for maintaining the proper combustion and ensuring that the oil is burned effectively.

The operation of forced draft oil burners contrasts with other types of draft systems, such as induced draft, where a fan would pull air from the combustion chamber, creating a negative pressure that helps exhaust gases out of the system. While both systems aim to optimize combustion efficiency, forced draft systems tend to be more common in conventional oil furnaces due to their ability to maintain a steady airflow and improve operational reliability.