What type of appliance specifically requires a barometric draft control?

A barometric draft control is specifically designed to manage the airflow in combustion appliances, ensuring proper ventilation and combustion efficiency. Oil-fired boilers are particularly reliant on this type of control due to their operation and the characteristics of the fuels they utilize. These boilers need to maintain a balanced draft to allow for efficient combustion while preventing backdrafts and ensuring that combustion byproducts are vented safely outside.

In contrast, natural gas furnaces typically do not require barometric draft controls because they often employ direct venting systems or can rely on the natural draft without the need for such mechanisms. Electric heaters do not have combustion requirements, which eliminates the need for any draft controls. Likewise, gas water heaters may use various venting techniques that do not necessitate barometric controls, particularly in the case of power vented or direct vent systems.

Therefore, the oil-fired boiler stands out as the appliance that specifically requires a barometric draft control to maintain safe and efficient operation.