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Heating oil

Heating oil is any petroleum product or other oil used for heating; a fuel oil. Most commonly, it refers to low viscosity grades of fuel oil used for furnaces or boilers use for home heating and in other buildings. Home heating oil is often abbreviated as HHO.
Most heating oil products are chemically very similar to diesel fuel used as motor fuel; motor fuel is typically subject to higher fuel taxes. Many countries add fuel dyes to heating oil, allowing law enforcement to check if a driver is evading fuel taxes. Since 2002, Solvent Yellow 124 has been added as a "Euromarker" in the European Union; untaxed diesel is known as "red diesel" in the United Kingdom.

Heating oil is commonly delivered by tank truck to residential, commercial and municipal buildings and stored in above-ground storage tanks ("ASTs") located in the basements, garages, or outside adjacent to the building. It is sometimes stored in underground storage tanks (or "USTs") but less often than ASTs. ASTs are used for smaller installations due to the lower cost factor. Heating oil is less commonly used as an industrial fuel or for power generation.
Leaks from tanks and piping are an environmental concern. Various federal and state regulations are in place regarding the proper transportation, storage and burning of heating oil, which is classified as a hazardous material (HazMat) by federal regulators

Technical Characteristics

Heating oil consists of a mixture of petroleum-derived hydocarbons in the 14- to 20-carbon atom range that condense between 250 and 350 °C (482 and 662 °F) during oil refining. Heating oil condenses at a lower temperature than petroleum jelly  bitumen, candle wax and lubricating oil, but at a higher temperature than kerosene, which condenses between 160–250 °C (320–482 °F). The heavy (C20+) hydrocarbons condense between 340–400 °C (644–752 °F).

Heating oil produces 137,500 British thermal units per US gallon (38.3 MJ/L) to 138,700 British thermal units per US gallon (38.7 MJ/L) and weighs 8.2 pounds per US gallon (0.95 kg/L). Number 2 fuel has a flash point 52 °C (126 °F).


What are the benefits of heating oil?

The great news about heating oil is that it’s a safe, efficient, durable heating source.

So, if you want benefits, we’ve got benefits.

Benefit #1: Home heating oil is safe. 

Home heating oil won’t burn in a liquid state, so it won’t ever spontaneously combust. If a leak should happen, it’s not an explosive hazard. Additionally, the advent of Ultra Low Sulfur (ULS) heating oil has made heating your home with oil better for the environment and public health. How? Traditional oil has a sulfur content of 4,000 ppm; ultra-low sulfur heating oil only has a sulfur content of 15 ppm.

Benefit #2: Home heating oil is efficient. 

A gallon of heating oil produces 35% more heat than a gallon of natural gas. That means you can use less fuel to make the same amount of heat. In addition, heating oil produces the hottest flame of any home heating fuel, allowing it to warm your house faster. But wait—there’s more! ULS heating oil reduces the amount of sulfur buildup and allows your system to run at a more efficient level. It’s an efficiency trifecta.

Benefit #3: Heating oil systems are durable. 

A new heating oil system should last for 15 to 25 years or more, if you do a good job of taking care of it. And using ULS heating oil will help your furnace running smoothly and efficiently thereby lengthening the life of your system.

Safe, efficient, durable. It’s easy to see why so many New Englanders count on heating oil to heat our homes through those long and snowy winters.

Historically, the legal difference between diesel and heating oil in the United States has been sulfur allowance. Diesel for machinery and equipment must be below 15 ppm sulfur content while heating oil needed only stay below 500 ppm sulfur. However, most heating oil in the United States is now "ultra-low sulfur heating oil" (ULSHO) and meets the same 15 ppm standard.

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