Retail air conditioning

What makes a shop hard to keep comfortable

Shops have a few things working against them. Display windows catch the sun, spotlights and screens add heat, and the door opens every time a customer comes in. Stockrooms and back offices are often an afterthought, with no window at all. Staff are on their feet all day, and in summer the shop floor can feel close by mid-afternoon, while in winter the area by the door is cold.

A well-designed system deals with both. Most modern air conditioning is a heat pump, so the same units that cool the shop floor in July keep it warm in January.

Units that suit the space

Retail is about how the space looks, so we choose equipment with that in mind.

• Ceiling cassettes sit flush in a suspended ceiling and spread air evenly across a sales floor. They are the most common choice for shops.
• Ducted systems hide the units above the ceiling with only slim grilles on show, which suits showrooms and premium fit-outs.
• Wall-mounted units are the simplest and lowest-cost option for small shops, stockrooms and offices, placed above head height away from displays.
• VRF suits larger stores and multi-floor premises where several zones need their own control.

We also think about where the air lands. Cold air blowing onto a till point or a fitting room is as unwelcome as a hot shop.

The door problem

An open door can undo a lot of cooling and heating. On the survey we look at how the entrance is used and size the system with it in mind. If the door has to stay open, we will be honest about how much air conditioning alone can do. Some shops add an air curtain over the door: our article on air curtains explains how they work.

Showrooms and finished interiors

Showrooms for kitchens, bathrooms, furniture or cars have finished surfaces everywhere, and the install must not mark them. We protect floors and displays, plan pipe routes through ceiling voids or behind fixtures, and agree any wall openings in advance. Larger showrooms with high ceilings need units chosen to throw air down to where people stand, which is something we check on the survey.

Upper floors, basements and mixed-use buildings

Many shops sit below flats or offices, or have a basement stockroom and a first-floor office. That affects where outdoor units can go and how pipework reaches them. A unit in a rear yard may need a long pipe run up through the building, and a basement may need a condensate pump because there is no fall to a drain. Flats above mean outdoor unit noise needs careful thought, especially if the system runs early in the morning.

We look at all of this on the survey and check pipe lengths and heights against the manufacturer’s limits before we quote. If a building needs something unusual, such as a roof mounting frame or a long riser, it is on the quote from the start.

Installing around trading hours

We fit retail air conditioning when the shop is shut: early mornings, evenings, overnight or on a closed day. Noisy work such as core drilling and outdoor unit mounting is done at agreed times, stock is protected, and the shop floor is left clean and safe before opening. In a shopping centre or retail park we work to the landlord’s permit and contractor rules, and provide the method statements and certificates they ask for.

Most retail units are leased, and the landlord will normally need to approve outdoor units, roof work and openings. We can supply drawings and product data. Our article on leasehold consent explains what to check.

Fitting rooms, stockrooms and back offices

Small rooms at the back of a shop are often the hottest. A stockroom with no window, a fitting room lit by spotlights, or an office with the safe, the CCTV recorder and the router all in one corner. A small wall unit or a branch of a multi-split can sort these out without oversizing the shop floor system.

Running the system well

Simple controls help. A timer that brings the system on before opening and off after closing, and a locked setpoint so the shop is not cooled to 18°C by mistake, saves energy and wear. Most systems have app or central control for this. We set it up at handover and show your staff how it works.

F-Gas, TM44 and maintenance

Shop systems pick up dust from stock and footfall, so filters need regular cleaning. A maintenance contract covers servicing, F-Gas leak checks where the charge requires them, and records your head office or landlord can see. If the air conditioning in your premises totals more than 12 kW, GOV.UK says it needs an inspection by an accredited energy assessor at least every five years. We can help you arrange a TM44 inspection and fix what it finds.

Operators with several shops can put them all on one contract, each with its own records. Retail systems and contracts are priced after survey on a fixed-price quote.