How to Site a Refrigerated Container So the Noise Behaves

A refrigerated container is never quite silent. Behind the Carrier, Thermo King, Daikin or Star Cool badge sits a refrigeration unit — compressor, condenser fans, evaporator — that cycles on and off to hold the set point, and it does so around the clock. On a working depot nobody notices. Pushed up against a garden fence in a residential street, that same cycling can become the thing a neighbour rings the council about. This guide covers how a reefer sounds at distance, where to stand it, how to screen it, and how UK neighbour-noise rules tend to work — so the box does its job without the friction.

It cycles — day and night alike

The sound is not steady. A reefer keeps temperature by cycling: the compressor starts, pulls the interior back to the set point drawing 5 to 12 kW depending on format and duty, then cuts out until the box drifts again. The peaks you hear are those start-ups, and they recur overnight as much as through the day, because holding temperature never stops. Frozen duty at -18 °C works the compressor harder and more often than chilled duty at +2 °C, so the same unit can feel louder full of frozen stock than fresh. Over a day it gets through roughly 70 to 170 kWh depending on size and setting — energy spent doing work you can hear.

dB at distance: the six-decibel rule

No honest single figure describes “how loud”, because it hinges on the specific unit, the ground, nearby reflecting walls and the background noise already there. What is predictable is how sound fades. For a single source out in the open, sound pressure drops by about 6 dB each time you double your distance from it. So moving a unit from 2 metres off a boundary to 8 metres is two doublings — a marked drop at the fence, not a rounding error. A change of about 10 dB reads as roughly halving the loudness, which is why distance is the cheapest and most effective lever you have.

Treat the table as the shape of the effect, not a spec sheet. A reefer is also directional — the compressor and condenser fans are grouped at one end — so turning that end away from the nearest home buys quiet for nothing.

Siting and acoustic screens

Where distance alone will not do it, a barrier can. A screen only works if it is solid and heavy — a close-boarded fence, a masonry wall, a purpose-made acoustic panel — with no gaps, and tall enough to break the line of sight between the machinery end and the neighbour’s window. Set it close to the container or close to whoever is listening, not marooned halfway between. A soft, absorptive face beats a hard one that simply bounces the noise somewhere else.

Two traps to avoid. First, standing the unit in a corner where two hard walls funnel and reflect the sound back out. Second, bedding it on ground that carries vibration into an adjoining structure. A firm, level base earns its keep for quiet as much as for stability: set against a building wall, aim the machinery end into the open, never into the corner.

Neighbour-noise rules vary by council

Whether a running reefer counts as a nuisance is not settled by a national number. In the UK, persistent noise that affects neighbours can be treated as a statutory nuisance, and it is your local council’s environmental health team that assesses a complaint — weighing the character of the noise, the hour and its effect on ordinary use of a home rather than one published decibel limit. Overnight hours are usually judged more strictly than daytime.

Because those thresholds, and any conditions attached to a permanent installation, differ from council to council, the safe move is to ask your local authority before siting a unit near homes — and to treat a permanent, occupied installation as potentially a planning matter as well. None of this is EuroReefer making a ruling; it is a prompt to check with the body that does.

Fix the siting before it arrives

Noise is far cheaper to design out before delivery than to argue over after a complaint. Whether you hire — indicative long-term UK rates start around £12 a day ex VAT, with VAT at 20%, though a minimum of about 90 days is common and some suppliers offer shorter hire at a higher day rate — or buy, with used reefers observed at £4,500 to £7,500 ex VAT and new one-trip units at £18,995 to £22,500 ex VAT, say where the box will stand and how close the nearest home is.

Compare the figures on our prices page or across for-sale stock, and when you are ready, set it out once in a quote request: we pass it to specialist suppliers, who contact you directly if they can meet your need. For the wider picture on power, running costs and buying used, browse all our guides.