Oil heaters are devices that use oil as a fuel source to generate heat for residential or commercial spaces. They work by burning oil in a combustion chamber, which then heats air or water that is circulated throughout the building. These heaters are known for their efficiency and ability to provide consistent warmth, making them a popular choice in colder climates. There are different types of oil heaters, including oil-fired boilers and oil furnaces. Regular maintenance is essential to ensure their safe operation and longevity. Additionally, oil heaters require a storage tank for the fuel, which can be located above or below ground.