Getting air-conditioning approval in Switzerland

Which rules are separate?

MuKEn is a model for cantonal energy provisions, not a directly identical nationwide law. Technical standards do not replace checking local rules either. Ask the designer to identify the requirements used for your project.

Cantonal starting points, not blanket approval

Zurich government decision 1082/2025 discusses air conditioners and permits. Aargau provides a guidance sheet on cooling residential buildings. Lucerne explicitly identifies permit requirements for fixed air conditioners and noise protection. These resources do not replace a project-specific municipal response.

In Bern, Vaud, St Gallen, Zug and Schwyz, also clarify the procedure, energy evidence and local protection requirements with the municipality and cantonal specialists. Claims such as “Zug always assesses at the property boundary” or “the same night limit applies everywhere” are not reliable design assumptions.

Why 35 dB(A) is not blanket approval

Assessment depends on factors including sensitivity zone, time of day, operating conditions and relevant receiving locations. Windows of noise-sensitive rooms are often important. A manufacturer’s value at five metres or a property-boundary reading does not automatically demonstrate compliance.

Consider courtyard reflections, transmitted vibration and operation under high load. Preventive emission limits must also be considered. Have the location assessed before fixing brackets and pipe routes.

Prepare a preliminary enquiry

• Address, floor plan and façade photos.
• Data sheets for both units and intended operating mode.
• Location, distances to neighbouring windows and pipe routes.
• Shading, cooling demand and condensate arrangements.
• Consents and clear responsibility for the application and evidence.

Frequently asked questions