What can occur if the proper air-to-fuel ratio is not maintained in an oil burner?

Maintaining the proper air-to-fuel ratio is crucial for the safe and efficient operation of an oil burner. When this ratio is not correctly balanced, one potential consequence is the production of carbon monoxide, a poisonous gas that poses serious health risks. An inadequate air supply can lead to incomplete combustion, which generates carbon monoxide as a byproduct.

In contrast, if the air supply is excessive, it can still lead to inefficiencies, but the immediate concern is the hazardous nature of carbon monoxide. Proper combustion can reduce emissions and improve overall efficiency, but when the mixture is off, safety becomes the main issue. Carbon monoxide is colorless and odorless, making it even more dangerous, as it can lead to carbon monoxide poisoning if ventilation is inadequate and the gas accumulates. Therefore, the production of carbon monoxide directly links to the need for a proper air-to-fuel ratio in oil burners.