Air conditioning in a Paris apartment: co-ownership rules and required steps
With increasingly hot summers in Paris, air conditioning has become a priority for many residents. But installing an air conditioning system in a Paris apartment is not straightforward. Co-ownership rules, work authorisation, town hall declaration, architectural constraints: here is everything you need to know before starting.
Air conditioning in co-ownership: who decides?
In a co-owned building, the rules are clear: anything affecting common areas or the exterior appearance of the building requires authorisation. The installation of an outdoor unit falls into this category.
General assembly authorisation
If your installation requires fixing an outdoor unit on the facade, roof, or in a common space, you must submit your project to the general assembly of co-owners. The vote must obtain an absolute majority (article 25 of the law of 10 July 1965). Plan your approach several months before the desired installation.
Consulting the co-ownership regulations
Before any approach, carefully read your co-ownership regulations. Some explicitly prohibit visible outdoor units, or impose colour and size constraints. Your property manager can provide this document.
Private areas
If your installation remains entirely in private areas (mobile air conditioning without outdoor unit, or outdoor unit placed on a private terrace not visible from outside), co-ownership authorisation is not required.
Town hall declaration: when is it mandatory?
Preliminary work declaration
It is mandatory if your installation modifies the exterior appearance of the building, in particular by installing an outdoor unit visible from the public road. This declaration must be filed at the town hall and accepted before work begins. The instruction period is generally one month.
Protected areas in Paris
Paris is a city very framed architecturally. If your building is in a safeguarded sector, near a historic monument, or in a Zone for the Protection of Architectural, Urban and Landscape Heritage (ZPPAUP), constraints are even stricter. In some cases, the Architect of Historic Buildings must give consent.
What types of air conditioning are possible in a Paris apartment?
Wall-mounted split with outdoor unit
The most efficient and common system. It requires an outdoor unit and one or more indoor splits. It also has the most regulatory constraints in co-ownership.
Reversible air conditioning
Very common in Paris, reversible air conditioning operates in both cooling and heating modes. It is an economical solution, particularly interesting in well-insulated apartments.
Mobile air conditioning without outdoor unit
For apartments where installing an outdoor unit is impossible, there are solutions without an outdoor unit. These systems are less efficient but do not require special authorisation.
Steps to install air conditioning in a Paris apartment
- Step 1: Read the co-ownership regulations and identify constraints
- Step 2: Consult the property manager to know the authorisation procedure
- Step 3: Get a quote from an RGE-certified professional
- Step 4: Submit the project to the general assembly if necessary
- Step 5: File the preliminary declaration at the town hall if required
- Step 6: Wait for authorisations before starting work
- Step 7: Installation by a certified technician
- Step 8: Mandatory annual maintenance for systems containing refrigerants
Do not skip administrative steps. An installation carried out without authorisation can expose you to sanctions and obligation to restore at your own expense.
Annual maintenance: a legal obligation
In France, annual maintenance of air conditioning systems containing more than 2 kg of refrigerant is mandatory. It must be carried out by a certified technician. This maintenance includes checking circuit tightness, performance and fluid levels.
Available financial aid
- MaPrimeRenov': subject to resource conditions and system performance
- CEE (Energy Savings Certificates): offered by energy suppliers
- VAT at 5.5 percent for systems qualified as renewable energy heating equipment
Frequently asked questions
My neighbour installed an outdoor unit without authorisation. What to do?
You can report the situation to the property manager who is entitled to demand removal or regularisation. If the outdoor unit creates noise nuisance, you can also contact the town hall.
Can a tenant install air conditioning?
A tenant can install mobile air conditioning without outdoor unit without special authorisation. For any fixed system with outdoor unit, they must obtain written agreement from the owner, who must obtain co-ownership authorisation if necessary.
What air conditioning power for a typical Paris apartment?
For a 25 m2 living room with standard ceiling height, a 2500 W (2.5 kW) split is generally sufficient. For an entire apartment, a multi-split system with one outdoor unit and several indoor units is more suitable.
