Gasheizkesseln are heating systems that use natural gas to generate heat for residential and commercial buildings. They work by burning gas to heat water, which is then circulated through radiators or underfloor heating systems to warm up spaces. These boilers are known for their efficiency and can significantly reduce energy costs compared to other heating methods. Modern Gasheizkesseln often come with advanced features such as programmable thermostats and modulating burners, which adjust the heat output based on demand. Regular maintenance is essential to ensure optimal performance and safety, making it important for users to schedule annual inspections with qualified technicians.