It is one of the first questions we hear during on-site studies: "am I allowed to, and who do I ask?". The answer is reassuring. Switzerland has deliberately simplified heat pump procedures, because every canton wants to speed up the exit from oil and gas heating.
Simplified does not mean paperwork-free, though. Here is what must be notified, what must be authorised, and what actually blocks files in 2026.
The principle: notification, not permit
For an air-water heat pump replacing an existing heating system, the dominant rule in Switzerland is the notification procedure: you declare the installation to the commune with a technical file, and if the commune does not react within the set deadline, work can start. No public consultation, no posting, no objection period.
Three situations bring back a standard building permit:
The building or zone is protected. Listed buildings, historic centres, landscape protection perimeters. The outdoor unit is then examined for visual integration.
The installation is not a replacement. In new builds and extensions, the heat pump is handled inside the overall building permit.
The communal code says so. Some communes keep specific rules on outdoor unit placement, particularly street-facing facades.
One constant applies everywhere: geothermal boreholes always require a cantonal licence, because they may cross groundwater layers. Each canton publishes an admissibility map; some water-protection zones are excluded.
Canton by canton, in short
Vaud exempts most standard replacements from public consultation; a communal notification with the datasheet and noise certificate is enough, and boreholes go through the cantonal CAMAC platform. Geneva has streamlined procedures for heat pumps replacing fossil heating, with stricter scrutiny in the old town and protected perimeters. Fribourg, Neuchâtel, Valais and Jura follow the same logic: notification for standard cases, full procedure in sensitive perimeters, communal rules for outdoor unit placement in tourist or historic areas. In German-speaking Switzerland, the Meldeverfahren plays the same role in Aargau, Zurich, Bern and both Basel cantons.
Everywhere, the commune receives the notification and decides borderline cases. Two neighbouring communes can differ, which is a good reason to let an installer who knows them handle the file.
Noise: the real technical condition
The notification itself is rarely the obstacle. What conditions an air-water file is noise compliance. The federal Noise Abatement Ordinance sets planning values per zone and per period, stricter at night.
The notification file therefore includes a compliance certificate: a calculation showing that the chosen machine, at the chosen location, respects the limits at the nearest neighbour's window. Recent machines from the major brands (Daikin, Panasonic, Stiebel Eltron, Bosch, Buderus) reach 30 to 35 dB(A) in night mode at a few metres, so compliance is easy to demonstrate with a sensible placement. Our article on heat pump noise and neighbour rules covers the values in detail.
What a good file contains
- The communal or cantonal notification form, completed and signed.
- The machine's datasheet with documented sound power levels.
- The noise compliance certificate, calculated for the real location and the most exposed neighbouring window.
- A site plan showing the outdoor unit, boundary distances and neighbouring windows.
- Where relevant, the co-ownership's approval.
This is exactly the file we prepare for every installation, together with the subsidy applications.
Our advice for 2026
- Clarify your situation: ordinary or protected zone, single-family house or co-ownership, replacement or new build.
- Choose the machine before filing: you notify with a precise datasheet, not an intention.
- Have the noise certificate calculated by the professional who sizes the system.
- File early: a notification costs a few weeks of patience, a regularisation costs months.
Planning a heat pump and wondering which procedure applies at your address? See our heat pump installation service, administrative steps included, or start your free personalised study: we check your commune's procedure as part of the study.
