For projects that need to be filed for energy conservation, it is usually necessary to apply to the local construction department or the competent energy conservation department for filing. These departments will provide relevant application forms and requirements, and guide you to prepare the required materials, such as technical parameters of doors and windows, energy-saving performance test reports, etc. After submitting the application, the construction department will conduct an audit and evaluation, and finally issue the energy-saving filing certificate for doors and windows.
In short, when filing energy conservation, it is necessary to find the corresponding competent department to apply according to the specific conditions of the project and the examination and approval authority.