Which type of gas is commonly used in residential heating systems?

Natural gas is commonly used in residential heating systems due to several key factors. First, it is widely available in urban areas through extensive pipeline networks, making it convenient for homeowners to access. Second, natural gas is often less expensive than other fuels, such as propane or butane, which can lead to lower heating costs over time. Additionally, it burns cleanly, producing fewer emissions compared to alternatives like coal gas, which has been largely phased out due to environmental concerns.

Natural gas heating is also efficient, providing rapid heating capabilities. Modern furnaces and boilers designed for natural gas can achieve high energy efficiencies, allowing homeowners to enjoy comfortable indoor temperatures while minimizing waste. Furthermore, the use of natural gas supports various appliances and systems, from water heaters to stoves, contributing to its popularity in residential settings.

In contrast, while propane is also used in some residential heating systems, particularly in rural areas without access to natural gas lines, it is not the predominant fuel type nationwide. Butane, although similar to propane, is less common for heating due to its higher vapor pressure, which can complicate storage and use in colder climates. Coal gas, being an older source of gas, has largely fallen out of favor due to its higher emissions and the move towards