Published 7 September 2026 · Written by Alan Refrigeration Services · Verified by Alan Law, Food Safety Specialist
A second-hand fridge looks like a saving. But the real question is not the price, it is whether it can hold a safe, steady temperature for the food you put inside. On a used unit, that comes down to one thing: whether it has been properly serviced, and whether it passes the checks below.
Since 1985, kitchens have called Alan when the cold fails. In forty years of repairs we have seen both kinds of used fridge. The one that was serviced properly, compressor checked, gaskets replaced, coils cleaned, and then went on to hold temperature through years of service. And the one that was wiped down, switched on for the photo, and sold. From the outside they look the same. Two units can look identical and behave completely differently once the doors open.
A cheap upfront price is only part of the story. The bigger risk is the day the unit drifts out of temperature and you lose a fridge full of stock, or worse, serve food that was not held safely. On an unserviced unit there is usually no warranty, so the first breakdown is your bill, and parts for older or unbranded models can be slow or impossible to find, which means longer downtime while your food sits at risk.
None of that is an argument against buying used. It is an argument against buying blind. A used commercial fridge that has been through a proper service, and that passes the five checks below, can be a sound buy. Cold is easy. Holding it steady is the hard part, and that is what every one of these checks is really testing.
Every item on this list is really a temperature question. If any of these is failing, the unit cannot keep your food safe, whatever the seller says about it.
Listen to the compressor. A unit that rattles, knocks or struggles is near the end of its life, and a failing compressor cannot hold temperature when the kitchen gets hot. A kitchen here can run at 38°C and 70% humidity, and a tired compressor that copes in an air-conditioned showroom loses ground by the 12 to 2pm rush. Serviced properly, a compressor starts without a struggle, settles into a steady hum and cycles off once the cabinet is cold. Ask when it was last checked, and whether the condenser coil was cleaned at the same time: a coil packed with kitchen grease makes even a good compressor work as if it were failing.
Test that it holds temperature. Switch it on with a thermometer inside. Getting cold once is not enough, it has to hold a steady temperature for hours. Stable matters more than cold. The US FDA and USDA put the danger zone at roughly 4°C to 60°C, and inside it bacteria can double in about 20 minutes. Refrigeration slows them down; it does not kill them. A unit that pulls down, then creeps back up every time the compressor rests, is not holding anything. Leave the thermometer in for a few hours if the seller will let you, and open the door a few times while you wait. Every door opening starts a clock, and you want to see how quickly it recovers.
Inspect the door seals. Cracked or slack gaskets let warm, humid air in, so the temperature drifts and the unit struggles to recover. A leaking seal is a direct food safety risk. Run your fingers along the whole gasket and look for splits at the corners, then close the door on a sheet of paper: if it slides out without resistance, the seal is gone. A fridge is only as good as its weakest seal and its slowest recovery. The good news is that gaskets are a service item. A properly serviced unit will usually have had them replaced; an unserviced one will usually show it.
Look for rust and worn surfaces. Rust spreads, and pitted or damaged interior surfaces are hard to keep clean and hygienic, the opposite of what food-contact surfaces should be. Check the shelf supports, the floor of the cabinet, the drain and the corners where water collects. Surface marks on stainless steel wipe off. Pitting does not, and a cabinet that cannot be cleaned properly is a hygiene problem you take home with the fridge. Hygiene is your licence to trade.
Ask about age and history. A fridge already 7 or 8 years old, with no record of how hard it was run, has little reliable life left. The same fridge with a service record is a different proposition: you can see what was replaced, when, and by whom. Ask for the model plate, the original brand and the refrigerant type, because a unit no one can name is a unit that is hard to find parts for. One repair is normal. A second or third in a year is the unit telling you it is done, and that goes for its previous owner’s repairs as much as yours.
Put the used unit next to a new one over five years: the purchase price, the repairs, and above all the risk of a breakdown taking out your stock or putting your food safety in doubt. Seen that way, the comparison is not really used against new. It is known against unknown. A serviced used unit with a record, and a new unit with a warranty, can both come out well. The unit that fails the sum is the one nobody can vouch for. Buy cheap, and you buy often.
If you are weighing a used unit against a new one, count the grant in the sum too. If the new unit is on the official pre-approved list, the Energy Efficiency Grant can support up to 70% of the cost for SMEs, applied for through the Business Grants Portal before you buy. Many of the models we carry are on that list. How the EEG works for a commercial fridge.
Ask us before you buy one. Tell us the brand, the age and what you will store in it, and send a few photos of the compressor, the gaskets and the inside. We will tell you what to check. And if the sum points to a new unit instead, we will tell you which tier your menu actually needs. A real person replies, usually the same day.
It can be, if it has been properly serviced and passes the checks: a quiet compressor, a steady temperature held for hours, tight gaskets, a clean rust-free interior and a known history. The risk is the unserviced unit, not the used one.
Switch it on with a thermometer inside and leave it for a few hours. Getting cold once is not enough. It has to hold a steady temperature, and recover quickly after the door has been opened.
Its age, the brand and model plate, when it was last serviced, what was replaced, and how many repairs it has had. One repair is normal. A second or third in a year is the unit telling you it is done.
If the new model is on the official pre-approved list, the EEG Base Tier can support up to 70% of the cost for SMEs. Apply through the Business Grants Portal before you purchase. Many of the models we carry are on that list.