“…As EIA (U.S. Energy Information Administration) reported, there are about six million households in the United States using heating oil as their main heating fuel at present, and mostly used in the northeastern United States. Heating oil is refined from crude oil at a 25% yield, thus its prices are generally closely related to fluctuations in crude oil prices [1,2], also depending on the amount of fuel purchased. Unlike natural gas which is purchased on demand, heating oil must be purchased in advance, and usually with a large amount, which has brought a considerable burden to lots of American families.…”