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Which fuel is more efficient in a forced air furnace heating oil or kerosene?

Heating oil and kerosene are both common fuels used in forced air furnaces, but there are some differences in their efficiency.

Heating Oil

- Heating oil is a distillate fuel, which means it is a refined product made from crude oil.

- It has a higher energy density than kerosene, meaning it produces more heat per gallon.

- Heating oil burns hotter than kerosene.

- Efficient modern oil burners can achieve up to 85-90% efficiency, meaning that 85-90% of the energy in the fuel is converted to heat.

Kerosene:

- Kerosene is also a distillate fuel but has a lighter composition and lower viscosity than heating oil, which makes it easier to ignite and burn.

- It has a lower energy density than heating oil and, therefore, produces less heat per gallon.

- Kerosene burns cooler and can create more soot and residue.

- Modern kerosene burners can achieve efficiency levels of around 75-80%.

In general, heating oil is more efficient in a forced-air furnace than kerosene, producing more heat per gallon and achieving higher efficiency ratings in modern furnaces. For this reason, it is generally the preferred choice for heating homes using a forced-air furnace system.