Air Conditioning Installation in Paris: The Complete Guide

Air conditioning installation in Paris happens in four stages: a heat-load assessment to size the unit, a choice between mono-split and multi-split, approval from your building's co-ownership (copropriété) if the outdoor unit can be seen from the street, then fitting by a professional certified to handle refrigerants. A mono-split is usually installed in one day.

Summers in Paris are getting hotter every year. Between old buildings, top-floor flats under zinc roofs and repeated heatwaves, heat quickly becomes a real problem. More and more residents, offices and shops are therefore installing air conditioning to stay comfortable.

Planning air conditioning? Installation, servicing and repair, building approval included: see our air conditioning service in Paris.

This guide covers everything you need to know before you start: types of air conditioning, where the outdoor unit can go, installation steps, building rules, costs and what to check in a quote. French terms you will meet along the way are explained the first time they appear.

Planning air conditioning in Paris or the inner suburbs? Call +33 1 89 70 15 36 (01 89 70 15 36 from a French phone), 7 days a week, 24 hours a day, or describe your flat on our contact page. We work in Paris (75), Hauts-de-Seine (92), Seine-Saint-Denis (93) and Val-de-Marne (94).

Why install air conditioning in Paris?

The Paris context: heatwaves and comfort

Heatwaves are no longer exceptional in Paris. Poorly insulated flats, often without cross-ventilation, store heat day after day. Air conditioning then becomes more than a comfort: it keeps a home healthy and liveable, and lets you sleep at night.

Top-floor flats under the zinc, and rooms facing full south or west, are the most exposed. A well-installed system cools these spaces, reduces humidity and filters indoor air.

The benefits for a flat or a house

Air conditioning gives you immediate comfort and adds value to the property. Modern systems are usually reversible, so they also heat in winter. Whether you live in a Paris apartment or a house in the suburbs, it is equipment you use all year.

Offices, shops and restaurants benefit too: a comfortable temperature matters for staff and customers alike.

When it becomes necessary

It is time to consider it when indoor temperatures become stifling in summer: poor sleep, rooms that stay hot despite closed shutters and night-time ventilation. Air conditioning is especially useful in older homes, Haussmann-era buildings and townhouses where energy renovation is limited.

Mono-split, multi-split, ducted: the types of air conditioning

Mono-split, multi-split, ducted or console

A mono-split pairs one indoor unit with one outdoor unit, connected by copper refrigerant lines. It cools a single room (living room or main bedroom). It is the most common choice: efficient, quiet indoors and simple to fit.

A multi-split connects several indoor units (usually two to five) to a single outdoor unit, with separate temperature control in each room. In Paris this is often the deciding factor: one outdoor unit on the facade or balcony for the whole flat is easier to get approved by the building. The trade-off is a more complex installation, because a line has to reach every room (false ceiling, boxing or service shaft).

A ducted system hides everything in a false ceiling, with only the air outlets visible. It is the most discreet option, but it needs a false ceiling, which older buildings do not always have.

A console unit, mounted low on the wall or on the floor, is a practical alternative when a high wall unit is not possible.

Split system or portable air conditioner?

A portable unit (a box on wheels plugged into a socket) needs no installation and no permission. It is a stopgap: noisy, inefficient, and its exhaust hose means leaving a window ajar, which lets hot air back in. If you own the flat, or if your lease and the building allow it, a mono-split is far more effective, quieter and cheaper to run.

Air conditioning without an outdoor unit (monobloc)

When the building or the planning rules refuse any outdoor unit, there are fixed monobloc units: the whole machine sits inside, and two holes through an outside wall handle air intake and exhaust. From the street you only see two grilles, which can be painted to match the facade. You need a wall facing outside (not onto a corridor), and the core drilling must be done carefully so the facade does not crack. These units are less efficient than a split, and the grilles still change the facade, so the co-ownership should still be consulted. The approval process is explained in our guide to installing AC in a Paris apartment building.

What is reversible air conditioning?

Reversible air conditioning is an air-to-air heat pump: the same unit cools in summer and heats in winter. It is the most commonly installed system in Paris, and what most French quotes mean by "climatisation réversible" or "PAC air-air".

How it works

A refrigerant circulates in a closed loop between the outdoor unit and the indoor units, changing state (liquid, gas) to carry heat:

• in summer, the indoor unit absorbs heat from the room and the outdoor unit releases it outside;
• in winter, the cycle reverses: the outdoor unit draws heat from the outside air, even when it is cold, and the indoor unit releases it into the room.

The unit moves heat rather than generating it. That is why it delivers more energy than it uses: this is the coefficient of performance (COP), often above 3 in heating mode, whereas a standard electric heater gives back exactly what it consumes.

Its strengths

• One unit for two seasons, which matters in a flat where every square metre counts.
• Efficient top-up heating in spring and autumn, when the building's shared central heating is not yet on or has just been switched off.
• Fast temperature change, useful when you come home from work.
• Air filtration: indoor units trap dust and pollen.

Its limits

• It does not make hot water and cannot connect to radiators. To replace a boiler, look at an air-to-water heat pump instead (see our guide on heat pumps in a Paris apartment).
• Its efficiency drops when it freezes outside. Severe cold is rare in Paris, but it should not be your only heating in a poorly insulated flat.
• Heat is blown: in the very high-ceilinged rooms of Haussmann buildings, warm air rises and comfort at head height drops.
• With long periods of heating, indoor air can become dry.

Choosing for Paris and Île-de-France

The right system depends on the area to cool, insulation, orientation and the building's rules. In a Paris flat you usually have to balance efficiency, discretion and silence. In a house there is more freedom, but energy performance still matters. For advice on your home, the Réseau Tubulure team can point you to the most suitable solution for your flat and budget.

Sizing your air conditioning correctly

An undersized unit runs non-stop without reaching the set temperature and wears out fast. An oversized one costs more to buy, runs in short cycles and removes humidity poorly. Correct sizing comes from an on-site heat-load assessment that takes into account:

• room area, the starting point;
• ceiling height: in Haussmann buildings it is often 2.80 m to 3.20 m, a much larger air volume than a modern flat;
• orientation: a room facing full south or west needs more power than a north-facing one;
• floor: a top floor under a zinc roof takes much more heat;
• insulation and glazing: single glazing and uninsulated walls increase the need;
• use: number of people, heat-producing appliances, living room or bedroom.

Be wary of quotes given without a visit: they rely on floor area alone and ignore what makes a Paris flat different.

Where can the outdoor unit go in Paris?

This is the real question in any Paris project. The usual options, from simplest to most restricted:

• Private balcony or terrace: the simplest case, but think about noise for close neighbours.
• Roof terrace or rooftop plant room: the least visible option, with access through shared areas and the equipment to be carried up.
• Inner courtyard: often accepted because it cannot be seen from the street, but sound echoes there and lifting equipment can be awkward.
• Street-facing facade: the most regulated (co-ownership, town hall, sometimes the Architecte des Bâtiments de France, the state heritage architect), and fitting on a high floor may require a cherry picker or scaffolding.

The location affects the unit's performance, the length of the refrigerant lines and your neighbours' peace. The longer the line between the units, the lower the efficiency and the harder the installation.

Air conditioning installation steps

Step 1: needs assessment and sizing

Before any installation, a professional carries out a heat-load assessment to determine the required power, based on the size of the home, its orientation, its insulation and its use (see the previous section).

Step 2: choosing equipment and location

The installer recommends the type of unit and where each part goes: not too close to neighbours' windows, not facing walkways. In Paris this choice is key to limiting noise and respecting the look the building requires.

Step 3: permissions

If the outdoor unit changes the building's appearance, you need approval from the co-owners' general meeting, and sometimes a declaration to the town hall. Sort these out before ordering equipment (see below).

Step 4: installation and connection

The installer drills through the wall for the refrigerant lines, the power cable and the condensate drain, fixes the units on anti-vibration brackets, then makes the connections. In older buildings the holes often go through thick cut-stone or solid brick walls, and the lines have to be hidden in boxing, a false ceiling or a service shaft.

Only a professional holding the French refrigerant-handling certificate (attestation de capacité) can connect and commission the system. This ensures the installation is compliant and safe.

Step 5: commissioning and checks

The technician vacuums the circuit, checks it is leak-tight, tops up the refrigerant charge if needed, tests performance, adjusts the settings and checks noise levels. You then receive an installation report. Commissioning is a condition of the manufacturer's warranty.

Step 6: maintenance and follow-up

A well-maintained system lasts longer and uses less energy. Regular filter cleaning, checking the connections and checking the refrigerant circuit are essential. Our article on the signs of an air conditioner that needs maintenance explains what to watch for and how often.

How to install air conditioning in a Paris apartment (and how a house differs)

Installing air conditioning in a Paris flat is not as simple as in a detached house. In a building, the co-ownership rules apply: any installation visible from the street must be approved at the general meeting. Noise, visual impact and respect for the facade all need to be planned for. The installer often has to find creative solutions: an outdoor unit on a balcony, in a courtyard or on a wall that cannot be seen from the street, while respecting safety distances.

Three technical points specific to flats:

• Condensate drainage. Air conditioning produces water as it cools the air. That water has to go to a rainwater downpipe, a drain or a condensate pump. A forgotten or badly fitted drain means a leak in your flat or the one below. If it happens, see our article on air conditioning leaking water.
• Routing the lines. Service shafts in older buildings were never designed for air conditioning: the route is decided during the site visit.
• Power supply. A dedicated circuit from the fuse board is often needed.

In a house there is more freedom. The outdoor unit can sit on the ground or on an outside wall, sheltered from wind and sun, and there are more system options, especially ducted units. In both cases, an experienced installer will adapt the layout to your constraints.

Co-ownership rules and town hall declaration

If you live in a Paris apartment building, the outdoor unit is the part that needs the most planning. Most buildings are run as a copropriété (co-ownership), managed day to day by a syndic (the managing agent). If the outdoor unit is visible from the street or changes the look of the facade, the installation must be approved by a vote at the assemblée générale, the co-owners' general meeting, under the article 25 majority of the French law of 10 July 1965. In some buildings, particularly in protected areas, the town hall (mairie) may also require a déclaration préalable de travaux, a prior declaration of works, and the Architecte des Bâtiments de France may impose a location or refuse a facade installation.

Noise matters as much as appearance: the outdoor unit should go where it disturbs the neighbours least. If you rent, ask your landlord first, as the request to the co-ownership goes through the owner. Start these steps before ordering any equipment: the date of the general meeting often sets the timetable for the whole project.

What to put in the file for the syndic, the noise rules and the options if you are refused are covered in our guide to installing AC in a Paris apartment building.

Rules, obligations and points to watch

Regulations in Paris and Île-de-France

Local constraints in Paris are strict, especially on noise and architecture. Buildings require approval before any hole is drilled in the facade. Only a professional holding the refrigerant-handling certificate can handle refrigerants and commission the system.

Checking your installer

Before signing a quote, check that your installer holds a valid refrigerant-handling certificate (attestation de capacité), the RGE or QualiPAC qualifications if you want certain financial aid, liability insurance and the 10-year building guarantee (garantie décennale).

Environmental impact and maintenance

Recent systems use less polluting refrigerants such as R32 and are designed to use less energy. Servicing your system every year keeps it efficient and limits the risk of refrigerant leaks. To see what an air conditioner really consumes and how to set it, read our article on air conditioning energy use and environmental impact.

Water-cooled air conditioning (eau perdue): best avoided

Some air conditioners, often old or entry-level models, are cooled with tap water: the water passes through the unit once, then goes down the drain. In French this is called climatisation à eau perdue. It uses drinking water continuously for as long as it runs, which weighs on the water bill, yours or the building's, and on supply during heatwaves, exactly when the city is shortest of it.

Réseau Tubulure does not recommend this type of unit. An air-cooled system (split, multi-split or a monobloc with no outdoor unit) does the same job without wasting water. If you already have one, or a seller offers you one, ask the syndic (the building manager) and your water provider which rules apply before installing it or bringing it back into use, then ask for a quote to replace it with an air-cooled system.

Average cost and quotes for Paris and the suburbs

What affects the price

The cost depends mainly on:

• the type of system and the number of indoor units;
• the power and range of the unit;
• access to the outdoor unit location (balcony, roof, courtyard, facade needing a cherry picker);
• the length of the refrigerant lines;
• work needed in an older building (drilling thick walls, boxing, false ceilings);
• the electrical connection and the condensate drain.

In Paris, space and permission constraints can push the budget up, but a detailed quote tells you exactly what to plan for.

A price quoted after a visit

Whether it is a mono-split, multi-split or ducted system, the price is quoted after a technical visit, depending on the complexity of the job. The quote includes equipment, installation and commissioning, but always compare several quotes before deciding. For our own prices, see our rates.

Items often missing from a quote

An incomplete quote is the main cause of bad surprises. Check that these items are included or priced separately:

• a condensate pump, essential when the drain point is higher than the indoor unit (false ceiling, distant drain stack);
• commissioning (vacuuming, leak test, settings);
• brackets and mountings: anti-vibration wall brackets, floor stand, extension arms;
• a dedicated electrical circuit if your fuse board has none;
• refrigerant lines beyond the standard length;
• any building fees for the file or use of shared areas during the works.

How to read an air conditioning quote

• The exact brand and model: a quote that only says "2.5 kW split" cannot be compared.
• SEER and SCOP: seasonal efficiency in cooling (SEER) and heating (SCOP). The higher, the cheaper to run.
• Noise levels of the indoor and outdoor units, in night mode.
• A line-by-line breakdown: supply, fitting, commissioning, lines, electrics, condensate, brackets.
• Warranties: the manufacturer's parts warranty and the installer's labour warranty.

Get several quotes and compare them line by line, not only on the total. An unusually low quote often leaves out commissioning, the condensate pump or anti-vibration mounts. You can request a free quote from Réseau Tubulure using the form.

Financial aid

French grants change every year and depend on the type of equipment. MaPrimeRénov' (the state renovation grant) covers air-to-water heat pumps, not reversible air-to-air units; the latter may qualify for a CEE bonus (energy-saving certificates paid by energy suppliers) subject to performance and installer conditions. Cooling-only units qualify for nothing. Check the current conditions before signing.

Finding the right installer in Paris

What to look for

A good installer is professional, responsive and knows Paris buildings. They should be clear about the brands they offer, lead times and warranties, and visit before giving a price.

Questions to ask

Before hiring anyone, ask:

• What experience do they have fitting units in Paris apartment buildings?
• Do they hold the refrigerant-handling certificate?
• Where do they suggest putting the outdoor unit, and how will the lines and the condensate drain run?
• Do they include commissioning and the first service?
• Can they provide annual maintenance?

A qualified installer will answer these points clearly and propose a solution suited to your flat.

Installation and maintenance together

Using the same company for installation and servicing makes follow-up easier. Réseau Tubulure technicians stay with their customers over time, from installation to maintenance.

FAQ: air conditioning installation in Paris

1. How much does air conditioning installation cost in Paris?

It depends on the type of unit and how complex the job is. For a mono-split, a multi-split or a ducted system, the price is quoted after a technical visit. Costs vary with access, facade constraints and building requirements. Ask for a quote after a site visit, and see our rates.

2. Do I need permission to install air conditioning in my Paris apartment?

Yes, in most cases. If the outdoor unit is visible from the street or changes the facade, approval from the co-ownership (a vote at the general meeting) is required. In protected areas, the town hall may also require a prior declaration of works. An installer used to Paris buildings can help you with these steps.

3. What is the difference between reversible and standard air conditioning?

Reversible air conditioning can also heat in winter by reversing its cycle. It is a two-in-one system that heats or cools your home depending on the season. It uses less energy than standard electric heating and suits the Île-de-France climate well.

4. Can I install air conditioning myself?

No. Fitting and commissioning a split system requires technical skills and a certificate to handle refrigerants. A badly installed system can leak, break down and void the manufacturer's warranty.

5. How long does installation take?

It depends on the system and the number of units:

• a mono-split is installed in one day;
• a multi-split takes two to three days;
• a ducted system can take up to a week, especially if false ceilings or finishing work are needed.

Add the time needed for building approval, which depends on the date of the next general meeting.

6. What power do I need?

It depends on the area and insulation. As a rough guide, count 100 W per m² for a well-insulated room and up to 150 W per m² for a top-floor flat under the roof. A serious installer always carries out a heat-load assessment before proposing a model.

7. How long does an air conditioner last?

A well-maintained unit can last 10 to 15 years. Cleaning the filters and regular professional servicing extend its life. Réseau Tubulure technicians offer maintenance contracts to keep your system in good order.

8. Is there financial aid for reversible air conditioning?

A reversible air-to-air unit is not eligible for MaPrimeRénov', which targets air-to-water heat pumps. It may qualify for a CEE bonus under conditions. These schemes change regularly, so check eligibility before starting work.

9. How does installing in an apartment differ from a house?

In an apartment you must follow the co-ownership rules (noise, appearance, approval), and space for the outdoor unit is often limited. In a house you can place the outdoor unit freely and choose more powerful systems such as ducted units.

10. When is the best time to install air conditioning in Paris?

Outside summer, between October and March. Lead times are shorter, and you have time to go through the general meeting before the hot weather. During heatwaves installers are overloaded and delays can stretch to several weeks.

11. How do I look after my air conditioning day to day?

Clean the filters every two to three weeks when you use the unit heavily, and make sure nothing blocks the airflow, indoors or around the outdoor unit. A professional service once a year is the good practice recommended by manufacturers. The legal leak check only applies above a certain refrigerant threshold: our article on the signs an air conditioner needs maintenance explains the rule.

12. What can go wrong with a poor installation?

Refrigerant leaks, high electricity use, compressor failure, noise, or water running indoors when the condensate drain is badly fitted. Use a professional who holds the refrigerant-handling certificate.

13. Does reversible air conditioning use a lot of electricity?

No. Modern reversible units deliver three to four times more energy than they consume: their COP is often above 3. The temperature you set also makes a big difference, as explained in our article on air conditioning energy use.

14. Can I have air conditioning without an outdoor unit in Paris?

Yes, with a fixed monobloc unit that only needs two grilles on the facade. It is useful where a standard installation is impossible, but it is less efficient than a split and the co-ownership should still be consulted. An installer can advise on what works in your flat.

15. Who should I call for a reliable, compliant installation?

An installer who knows Paris buildings, holds the refrigerant-handling certificate and visits for a heat-load assessment before quoting. Réseau Tubulure brings together experienced tradespeople who install air conditioning in Paris and the inner suburbs.

16. How do I choose an air conditioning company in Paris?

Get at least two quotes and compare them line by line. A serious company visits before quoting, does a room-by-room heat-load assessment, checks where the outdoor unit can go and reminds you about co-owners' approval. It holds the refrigerant-handling certificate and lists on the quote the brand, model, power, length of the pipe runs, condensate drainage and commissioning. Be wary of a price given over the phone without a visit: in a Paris flat, access, the facade and the pipe route change everything.

Before equipping every room, think about cutting the heat that comes in: our guide to sun protection with shutters, blinds and window films explains how to do it in a Paris flat.

Your air conditioning project in Paris

Installing air conditioning in Paris is an investment in comfort, energy efficiency and quality of life. Modern, quiet, reversible systems fit the constraints of Paris homes, as long as they are correctly sized, well placed and approved by the building.

Réseau Tubulure brings together qualified tradespeople who install, service and repair air conditioning in Paris and the inner suburbs. Request your free quote for air conditioning installation in Paris and get support from the heat-load assessment to commissioning.

You can also call us on 01 89 70 15 36 (from abroad: +33 1 89 70 15 36), 7 days a week, 24 hours a day, or send us your project through the contact form. We work in Paris (75), Hauts-de-Seine (92), Seine-Saint-Denis (93) and Val-de-Marne (94). Many of our plumbers speak English.