Extra cold storage for supermarkets, convenience stores and grocery chains

A supermarket’s cold chain has no slack built in. The chilled and frozen rooms behind the shop floor are sized for an ordinary trading week — not for a refit, a heatwave delivery glut, a promotional pallet drop or the moment a compressor gives out mid-trade. A refrigerated container gives a store a self-contained walk-in cold room it can stand in the car park or service yard, run for as long as it needs, then hand back. This page takes the retail buyer’s view — the facilities or estate manager ordering across several sites — rather than the one-off hire. EuroReefer is an editorial comparison site specialising in reefers: we hold no stock, no depot and no fleet, and we pass your request to specialist suppliers. Grocery retail is one of several trades in our sector guides.

Three jobs a reefer does for a store

Retail enquiries cluster into three situations, and knowing which one you are in sharpens the brief you give suppliers.

Overflow during works or a peak. A cold-room refit, a store extension or the Christmas and bank-holiday build-up outruns fixed capacity for a few weeks. A reefer absorbs the surge without a building project.

Continuity after a breakdown. When a store’s cold room fails, the clock starts on thousands of pounds of chilled and frozen stock. This is the most time-critical reason retailers call: a reefer on short-term hire stands in as a working cold room while the repair is scheduled. Treat it as urgent when you enquire — flag it as breakdown cover so it is scoped as short-term stand-in, not a routine order.

Promotions and seasonal lines. A pallet-heavy promotion, a summer barbecue range or a supplier’s over-delivery needs cold space that disappears again in a fortnight. Hiring matches that rhythm better than building capacity you use twice a year.

Which size for a store?

A reefer’s interior runs smaller than a dry container of the same size — the insulation takes thickness off the walls, ceiling and floor — so plan a little tighter than the headline volume.

The 10 ft suits a convenience store or a single aisle’s worth of overflow; its 2.99 m is an overall external length, so treat it as a four-to-five-pallet box once the insulation and refrigeration unit have taken their share. The 40 ft HC, with 2.55 m of internal height, is a genuine bulk store.

Chilled or frozen: one set point per box

A standard reefer runs from -25 °C to +25 °C, so a single box covers chilled produce at about +2 °C or frozen stock at -18 °C — but only one set point at a time. A unit set for frozen will not double as a chiller, so a store needing both overflow chilled and overflow frozen is looking at two boxes, not one. Door discipline matters too: every opening at a busy back door warms the load and lifts the electricity bill. And the unit holds a temperature rather than pulling down a warm load, so bring stock in already cold and let the box settle first.

Hire or buy: the multi-site question

For a single refit or a breakdown, hire is the obvious route. For an estate manager who finds a reefer standing in at a different store each quarter, the arithmetic shifts. As a rule of thumb, below 18 to 24 months of continuous use hire tends to win; past that, owning a unit that rotates between sites can pay.

Figures are indicative UK-market rates for 2026, ex VAT (UK VAT applies at 20 %), before delivery and electricity. A minimum hire term of around 90 days is common, though some suppliers offer genuine short-term hire at a higher day rate. If you buy, a sound used unit has 10 to 15 years of service left and a class A machine is usually under 12 years old; ask for a PTI (Pre-Trip Inspection) report under three months old and check the fridge make — Carrier, Thermo King, Daikin or Star Cool — which governs spare-part access. Our for-sale and prices pages set out each route and its ranges.

Running costs and power

A store reefer runs around the clock, so electricity is a real line on the account, not a rounding error. Expect roughly 70 to 170 kWh a day depending on format and set point — multiply by your commercial tariff to size the impact. Connection is usually three-phase 380/400 V through a 5-pin 32 A CEE connector, drawing 5 to 12 kW; some small formats accept single-phase 230 V. Confirm the yard has the right supply before delivery, not after: a unit that cannot be plugged in is dead weight.

The honest limits

A reefer is not a like-for-like replacement for a purpose-built store cold room. It holds one set point, its interior is smaller than a dry box of the same size, and it needs both a power supply and a spot with crane-lorry access. Two regulatory points are worth settling upstream, not after siting: ATP governs refrigerated transport, so a container parked behind the store does not fall under it; HACCP duties, sanitary standards and planning permission, by contrast, vary by country and council and are best checked with your environmental health team before the unit arrives.

Getting quotes

Tell suppliers the format, the set point, the duration and the site’s power situation — and flag a breakdown as urgent so it is scoped as short-term cover. We pass your request to specialist reefer suppliers, who contact you directly if they can meet your requirement; the exchange does not run through us. Request your quotes here.