Air conditioning a shop, salon or small restaurant in Île-de-France: what to sort out before you start
The EcoClimo team
30 Oct 2026 - 04 min read
In a shop, a hair salon or a small restaurant, temperature is not just a matter of comfort. A room that is too hot cuts visits short, tires the staff and can damage some goods. Conversely, a poorly chosen unit can be noisy, blow straight at customers or be expensive to run.
Commercial premises raise questions you do not come across in a flat: heat given off by the business itself, lease constraints, shared building rules, work that has to fit around opening hours. Here are the points to look at before you go ahead.
Working out what really heats your premises
In a shop, heat does not just come from the sun. The business itself produces a great deal of it, and that is often what sets it apart from a home of the same size.
- People: every customer or member of staff gives off heat. Premises that fill up at peak times do not have the same needs as an office occupied by two people.
- Lighting: accent spotlights, indoor signs, window lighting. The switch to LEDs has reduced this gain, but it remains noticeable in brightly lit shops.
- Equipment: ovens, coffee machines, hairdryers and hood dryers, refrigerated displays and cold rooms, which all reject their heat into the room.
- The shop window: a large south- or west-facing glazed frontage lets in a lot of heat in the afternoon.
That last point can partly be dealt with without air conditioning. An external blind or a heat-reflective window film limits solar gain and can reduce the capacity needed. This fits a sober approach: first cut the need, then size the unit as accurately as possible. Our article on choosing the right air conditioner capacity explains this reasoning in more detail.
Cassette, ducted or wall-mounted: choosing for your premises
Three types of indoor unit come up most often in shops. None is better in absolute terms; it all depends on the ceiling, the layout and the image you want to project.
| Type | Where it goes | Strengths | Points to watch |
|---|---|---|---|
| Cassette | Recessed into a suspended ceiling | Air spread on several sides, good distribution in an open room | Needs a suspended ceiling with enough void above |
| Ducted | Hidden in a ceiling void or plant room, air distributed through ducts | Very discreet, only the grilles are visible, can serve several areas | Heavier works, access needed for servicing |
| Wall-mounted | Fixed high on a wall | Simpler installation, lower purchase cost | More visible, less even distribution in a large room |
In a shop with a suspended ceiling, a cassette is often a good compromise. Ducted systems suit businesses that pay particular attention to their decor, or where several spaces need serving. Wall-mounted units remain a sensible choice for a small floor area or a tight budget.
In a restaurant, one point needs to be clear from the outset: air conditioning the dining room does not replace kitchen extraction, which is a separate system. And grease-laden air clogs the filters and coils of nearby units faster.
Lease, shared building and town hall: the permissions to plan for
This is the most often underestimated point, and the one that can delay a project by several weeks.
The commercial lease
If you are a tenant, reread your lease. Installing an air conditioner often affects the walls, the frontage or the common parts, and the lease usually requires the landlord's written consent for this kind of work. It is also wise to agree from the start who keeps the equipment at the end of the lease and who is responsible for servicing it.
The shared building (copropriété)
In a building with shared ownership, an outdoor unit on the frontage, a roof or in a courtyard changes the building's appearance or uses common parts. Approval from the general meeting of co-owners is then often required. Ask the managing agent about the building regulations and how long it takes to get your request on the agenda.
Planning rules
Depending on the town and the area, altering a frontage may require a prior declaration to the town hall, with additional requirements in protected areas. The noise from the outdoor unit must also remain acceptable for the neighbours, especially as shops often have homes above them.
Work that does not disrupt your business
A shop cannot close for half a day of works or servicing without losing out. Visits are therefore organised around your business:
- the site survey ideally takes place in real conditions, to see the premises, possible unit positions and the route for the pipework;
- installation is best planned on a closing day or outside opening hours, with the premises and goods protected;
- servicing is scheduled before the hot season, in a quiet slot, so the unit is ready when you need it.
To keep an eye on comfort in the room day to day, a thermometer hygrometer placed away from the unit and the window tells you whether the set point is really being held where your customers are.
Servicing suited to intensive use
A shop air conditioner runs for longer and in a dirtier environment than a domestic unit: dust brought in by customers, flour in a bakery, hairspray and hair in a salon, grease in a restaurant. Filters clog faster, and a dirty unit uses more electricity and blows less healthy air.
In practice, this means:
- more frequent filter cleaning, which your staff can handle between visits;
- professional servicing at least once a year, sometimes more depending on the business;
- compliance with refrigerant obligations: work carried out by a technician holding the refrigerant handling certificate (attestation de capacité) and, above a certain threshold expressed in tonnes of CO2 equivalent, a periodic leak check under the European F-Gas Regulation.
Our air conditioning maintenance for businesses takes care of this follow-up, with a written report after every visit and our active vigilance to contact you before deadlines fall due.
In short, before asking for a quote
Gather a few details; they will save everyone time: floor area and ceiling height, the direction the shop window faces, heat-producing equipment, the number of people present at peak times, whether there is a suspended ceiling, and the contact details of your landlord or managing agent.
Are you equipping your home or your shop and would like an on-site opinion? Our air conditioning installation service starts with a site survey and a free quote. Describe your project via the contact page: we reply within 48 working hours.
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