The Ministry of Economy writes: “All owners of properties with gas heating must carry out a heating check in the next two years. It makes sense to link the check to appointments that take place anyway, such as sweeping and checking activities or the regular heating maintenance.
Important, in addition to checking, you are also obligated to run optimizations. This is to ensure that multiple gas heaters work more efficiently. Heating checks should be carried out by specialists, such as heating technicians, chimney sweeps or energy consultants.
Via these you can find appropriate specialist companies website.
