Natural gas heaters are appliances that use natural gas as a fuel source to generate heat for residential or commercial spaces. They are commonly used for heating homes, water, and even swimming pools. These heaters are known for their efficiency and ability to provide consistent warmth, making them a popular choice in many regions. These heaters come in various types, including furnaces, boilers, and space heaters. They typically require proper ventilation to ensure safe operation and to prevent the buildup of harmful gases. Regular maintenance is essential to keep natural gas heaters functioning efficiently and safely.