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

Natural gas is commonly used in residential heating systems due to its availability, cost-effectiveness, and efficiency as a fuel source. It is delivered directly to homes via pipelines, making it convenient for heating, cooking, and appliance operation. Natural gas burns cleanly, producing a high energy output with minimal emissions, which is an important consideration for both environmental impact and indoor air quality.

While propane is also used in some residential settings, especially in rural areas without natural gas service, natural gas remains the primary choice for many households. Butane, like propane, is often used in portable heaters but is less common for central heating systems. Biomass gas can be a renewable energy source, but its use in residential heating is not as widespread as that of natural gas.