According to national regulations, garage is not allowed to install pipeline natural gas. In addition, since natural gas belongs to a special industry, the employees, especially the installation and ventilation personnel, should be professionals with relevant qualifications. There are serious potential safety hazards in the unauthorized connection.
 Taking Jiangsu Province as an example, if the private connection of gas pipelines violates the provisions of the Regulations on the Administration of Urban Gas in Jiangsu Province, without the consent of the competent gas department and the natural gas operating unit, the private connection and connection of pipelines to use natural gas, and the gas users who install, refit, or remove indoor gas facilities without authorization, shall be subject to administrative punishment according to the provisions of the Regulations on the Administration of Urban Gas.
 Legal basis
 Article 28 of the Regulations on the Administration of Urban Fuel Gas, fuel gas users and relevant units and individuals shall not install, refit or dismantle indoor fuel gas facilities and fuel gas metering devices without authorization, and shall not use or store fuel gas in places without safety conditions.