Oil-fired boilers are heating systems that use oil as their primary fuel source to generate heat. They work by burning oil in a combustion chamber, which produces hot gases that heat water in a boiler. This hot water can then be used for heating spaces or providing hot water for domestic use. These boilers are commonly used in areas where natural gas is not available. They are known for their efficiency and ability to produce high temperatures, making them suitable for various applications, including residential and commercial heating. Regular maintenance is essential to ensure optimal performance and safety.