Systems that have achieved the NAPE A1, A2 and B1 energy efficiency category (at least 30% energy savings compared to the reference level) are recommended for use by the National Energy Conservation Agency.
Systems with a NAPE recommendation may be labeled with a recommendation letter and a description: "NAPE recommends a system for use in multi-family / single family homes" or "National Energy Conservation Agency." recommends a system for use in multi-family / single family buildings "
The relevant elements of the recommended system may also be marked.
The recommendation is valid until the Technical Conditions change or technical changes affecting the energy efficiency of the assessed system.