Generic term for oils used exclusively for heating. Most often used to refer to No.2 fuel oil and to heavy fuel oil.

Common term for #2 fuel oil.

A distillate fuel oil used in atomizing–type burners for domestic heating or for moderate capacity commercial and industrial burner units.

Oil use for residential heating.

a petroleum product used for fuel

No. 2 fuel oil, a distillate fuel oil used either for domestic heating or in moderate capacity commercial-industrial burners.

A refined petroleum product used for heating purposes.

Heating oil, or oilheat, also known in the United States as No. 2 fuel oil and elsewhere as "red diesel", is a low viscosity, flammable liquid petroleum product used to fuel building furnaces or ("boilers"). It is commonly delivered by tank truck to residential, commercial and municipal buildings and stored in above-ground storage tanks ("ASTs") located in the basement or adjacent to the building. It is sometimes stored in underground storage tanks (or "USTs"), but less often than ASTs.