Air Conditioning Rules in Europe: Permits, Neighbours, and the Refrigerant Deadline
The famous temperature limits mostly do not apply to your home. The rules that stop an installation are the facade declaration, the condominium vote, the noise limit measured at your neighbour's window, and an F-gas timetable that decides what is worth buying.
Most people researching air conditioning in Europe end up reading about the wrong rules. The famous ones, the temperature limits that made headlines during the energy crisis, largely do not apply to private homes. The rules that will actually stop your installation are quieter: a planning declaration for changing the look of a facade, a vote at a condominium meeting, a noise limit measured at your neighbour's window, and a refrigerant phase-down that determines whether the unit quoted to you this year is a sensible thing to buy.
This is what genuinely governs a residential installation across Europe, and where the traps sit.
The refrigerant deadlines, which decide what to buy
The revised F-gas Regulation, (EU) 2024/573, has applied since March 2024 and sets a schedule that quietly makes today's standard equipment obsolete. The dates that matter for a home are these: from 1 January 2027, split air-to-water systems up to and including 12 kW may not contain refrigerant with a global warming potential of 150 or more. From 1 January 2029, the same limit hits split air-to-air systems up to 12 kW, which is the ordinary wall-mounted unit in most European flats. Above 12 kW the limit is 750 from 2029 and 150 from 2033. From 2035, systems up to 12 kW may not contain fluorinated gases at all, with a narrow exception where site safety rules require them.
The practical consequence is about R32, the refrigerant in most units sold today, which has a global warming potential of 675. It clears the 750 threshold and fails the 150 one. So an R32 split bought now is legal, serviceable and fine to run for its life, but it belongs to a generation that new-equipment rules are closing off, and the alternative already exists: propane, R290, has a global warming potential of 3 and is appearing across the monobloc and split ranges. If you are choosing between two comparable quotes and one is R290, that is a real point of difference rather than a sales line.
Permission: the part that stops installations
Almost nowhere in Europe treats the appliance as the regulated object. What gets regulated is the hole in the wall, the box on the facade and the noise it makes. Three permissions can apply at once and they are independent of each other: the municipality, the building, and the neighbour.
| Country | Planning or municipal step | Building or condominium step | Noise control |
|---|---|---|---|
| France | Declaration prealable at the mairie when the exterior appearance changes; ABF opinion near a listed monument | Vote at the general meeting, absolute majority, for a unit on common parts | Emergence rule: 5 dB by day, 3 dB at night above background |
| Spain | Municipal licence or works communication in most municipalities; facade rules vary by city | Community of owners, three-fifths of owners and quotas for facade changes | Municipal noise ordinances, typically stricter at night |
| Italy | Usually free building work, but historic centres and landscape-protected zones restrict visible units | Condominium rules and the decoro architettonico of the facade | Civil-code nuisance threshold plus municipal limits |
| Germany | Generally no permit for a small unit, but state building codes govern boundary distances | WEG owners resolution for anything on the common facade | TA Larm: 35 dB(A) at night at the neighbour window in residential areas |
| Portugal | Camara rules on visible units in protected areas | Condominium assembly for facade placement | General noise regulation, night period tightly limited |
| Greece | Restrictions in traditional settlements and archaeological zones | Building regulation and co-ownership agreement | Municipal ordinances |
| Netherlands | Usually permit-free at the rear, restricted on protected townscapes | VvE consent for the facade | Fixed dB limits, with a lower night value |
Two of these deserve emphasis because they are where foreign owners lose the most time. The first is the condominium vote. In an apartment building the facade is almost always common property, so drilling it and hanging a compressor on it is not yours to decide alone, and in Spain the threshold is a three-fifths majority of owners and quotas rather than a simple show of hands. Meetings are usually annual. Missing one can cost a season.
The second is noise, because it is the rule most likely to be enforced after the fact by a complaint rather than before it by an inspector. Germany and France take opposite approaches to the same problem. Germany sets an absolute limit, in practice 35 dB(A) at night measured at the neighbour's open window in a residential area, which is a demanding target for a compressor a few metres away. France sets a relative one: your unit may not raise the ambient level by more than 5 dB during the day or 3 dB at night. The French version is harsher in quiet places and more forgiving beside a main road, and it means an identical unit can be legal on one street and not on the next.
The temperature rules everyone quotes, and what they actually cover
During the 2022 energy crisis several governments capped cooling setpoints, and the coverage of it has outlived the measures themselves. Spain's decree limiting cooling to 27 degrees applied to public, commercial and hospitality premises and has since lapsed; it never governed private homes, and the widely shared claim that Spanish households may not set their own air conditioning below 27 degrees is simply untrue. Italy's Operation Thermostat set a comparable band for public buildings and its framework has largely stayed in place. France has had a rule since 2007, in article R. 241-30 of the energy code, forbidding the use of cooling in premises until indoor temperature exceeds 26 degrees, and it too addresses buildings in general use rather than a private flat.
Where France has genuinely moved is new construction, where 2026 rules push design away from installed cooling and toward buildings that do not need it. That affects what a developer may build, not what an owner may run.
Before you sign the quote
- Ask for the F-gas certificate number and the category, and check the company on the national trade register at the same time.
- Get the refrigerant named on the quote, with its GWP, so an R32 unit is a decision rather than a surprise.
- Confirm in writing who is responsible for obtaining any municipal declaration; a good installer treats this as their job and a bad one leaves it with you.
- Ask for the outdoor unit sound power level in dB(A) and where it will be mounted relative to the nearest neighbouring window.
- For an apartment, get the condominium consent in writing before any deposit changes hands, and check whether your building already has a designated location for units.
- Ask what happens to the condensate. A drain routed onto a neighbour's terrace is the single most common source of complaints after noise.
None of this is exotic, but it is the difference between an installation that stays and one that gets removed at your expense after a complaint. The permission is cheap and the removal is not.
Frequently asked questions
Do I need permission to install air conditioning in Europe?+
Usually yes, but for the outdoor unit rather than the appliance. Three permissions can apply independently: the municipality, where changing the exterior appearance triggers a declaration prealable in France or a municipal licence in most of Spain; the building, because an apartment facade is common property and needs a condominium vote, at three-fifths of owners and quotas in Spain and an absolute majority in France; and the neighbour, through noise limits. Historic centres and protected zones restrict visible units much more tightly.
Is it true that Spain bans setting air conditioning below 27 degrees?+
No. The 2022 decree applied to public, commercial and hospitality premises, not private homes, and it has since lapsed. Italy's Operation Thermostat similarly set a band for public buildings, and France's article R. 241-30 addresses premises in general use rather than a private flat. No European country tells a household what temperature to keep its own home at.
Will R32 air conditioning be banned?+
Existing units are not banned, but new equipment containing it is being closed off. Under Regulation (EU) 2024/573, split air-to-water systems up to 12 kW may not contain refrigerant with a GWP of 150 or more from 1 January 2027, and split air-to-air systems up to 12 kW from 1 January 2029. R32 has a GWP of 675, so it fails that threshold. From 2035 systems up to 12 kW may not contain fluorinated gases at all. Propane, R290, has a GWP of 3 and is the direction the market is moving.
How loud can an air conditioning outdoor unit legally be?+
It depends whether your country sets an absolute or a relative limit. Germany applies TA Larm, in practice 35 dB(A) at night measured at the neighbour's open window in a residential area. France instead limits emergence: your unit may not raise the ambient level by more than 5 dB during the day or 3 dB at night, which is stricter in a quiet street and more forgiving beside a main road. The same unit can therefore be legal at one address and not at another.
Does the installer need a licence to handle refrigerant?+
Yes. Anyone handling fluorinated refrigerant must hold an F-gas certificate in the category covering the work, issued nationally. Ask for the number and check the company on the national trade register at the same time. An uncertified charge voids the manufacturer warranty, and refrigerant leaks are the most common installation failure.
