Heating oil or Gas Heat is a distillate, just like diesel. It is also known as "red diesel" due to a red dye added as its content. It may be similar to diesel, but it is not diesel and thus it has different functions altogether. It is essentially a liquid fuel derived from petroleum or crude oil. It is said that about one-fourth of crude oil is converted into heating oil.
It is prepared at a temperature much lower than diesel, petroleum jelly etc, but at a higher temperature than kerosene. It is extensively used in homes in boilers and residential oil furnaces. Chiefly, it is used for keeping homes warm during winters, although it can also be used for profit-making purposes as well. You can get info on oil burner service via various online sources.
But it is seen that the Home heating Oil remains to be the most popular in terms of usage. It is poured in a furnace, and this process of filling is supposed to be by specialists only. When this furnace is heated, it releases warm air which keeps the building warm. The surface air is again drawn inside the furnace and reheated.
There are primarily three kinds of heating oil which have been given a number each according to their quality and price. This number one is the costliest followed by number two and number four. The number one is the best quality, while the rest two are down on quality, thus inexpensive.