The household electrical appliance you must always unplug before going on holiday to avoid any risk: “I lost everything because of this.”

The suitcase was packed in the hallway, the family already in the car - and in the kitchen a device hummed quietly, later triggering a disaster.

Many people pull the front door shut, take one last glance at the hob and feel reassured. Yet the most dangerous electrical appliance in the home is often the one sitting unobtrusively in the corner, continuing to run in silence. With bad luck, you don’t come back to a cosy home - you return to a charred shell.

The overlooked danger: why the fridge can become the source of a fire

When people think about fire risk at home, they usually picture hob rings, overloaded extension leads, or an iron left on. Specialists often point elsewhere: one appliance appears repeatedly in many fire statistics - the fridge, including fridge-freezers.

The reason is down to how it works. A fridge runs 24/7, year after year. Inside are the compressor, thermostat, fan, electronics and, in many models, a defrost heater too. All of it sits in a closed housing that hardly anyone pays attention to or maintains. Dust, heat and material fatigue build up over time - slowly, but with serious potential.

"The fridge is one of the electrical appliances that, statistically, is particularly often involved in the outbreak of house fires - precisely because it is permanently in operation."

How a gentle hum can turn into a blaze

Several issues make a fridge risky, especially in an empty home during the holiday period:

• Continuous operation: The compressor switches on and off constantly. Each restart puts strain on the electronics.
• Heat build-up: Heat collects at the back of the unit. If the fridge is too close to the wall, temperatures rise further.
• Dust and grease: The heat exchanger becomes clogged. Dust can ignite if a fault occurs.
• Ageing: Brittle cable insulation or a damaged plug increases the likelihood of short circuits.
• Refrigerant: Many modern “eco-friendly” refrigerants are flammable. If gas leaks, a single spark can be enough.

In day-to-day life, you might notice an odd smell or unusual clicking. When you’re away, you won’t hear or smell anything. A smouldering fire can spread uninterrupted. Often the kitchen units catch first, then the entire living area.

"I lost everything": when an everyday appliance changes your life

Fire investigators repeatedly describe similar situations: residents return from a week at the seaside and find a blackened home. The cause: a defect in or around the fridge. Insurance often pays out, but not for everything - and certainly not for memories, photos and personal items.

"Anyone who simply leaves the fridge running while on holiday is making a knowingly risky decision - especially if the appliance is old or wedged into a tight run of kitchen units."

Why so many people still never switch the fridge off

Despite the risk, for many households the fridge feels non-negotiable when it comes to switching off. The standard arguments are:

• "All the food will go off."
• "A fridge has to run all the time."
• "It was expensive - I’d better just leave it running."
• "Advice guides say you should at least keep the fridge on."

The reality is simpler: if you’re away for several days or weeks, you don’t need fresh food at home. The real obstacle is convenience - and the reluctance to do a proper clear-out before leaving.

How to make your fridge holiday-safe - without nasty surprises

If you want to reduce the risk, plan your holiday not only in your diary but also in your fridge. A structured routine keeps things calm.

Time before departure	Action
7–10 days	Use up fresh items; stop buying anything that needs refrigeration.
2–3 days	Use leftovers, freeze them or give them away. Empty the freezer compartments.
1 day	Switch the fridge off, leave the door open, wipe away water, defrost the freezer section.
Day of departure	Unplug it, leave the door slightly ajar, check that nothing is left in any compartments.

If you want to be extra cautious, don’t just pull the plug - also check the socket. Loose contacts can heat up and spark. A brief look can prevent a lot of damage.

When it makes sense to leave the fridge running

There are situations where switching off completely can feel impractical - for example, very short trips of one or two days. In that case, check the following:

• Are there any flammable materials directly behind or on top of the appliance?
• Is the fridge no more than ten years old?
• Does the cable look intact, the plug secure, and the socket firmly fixed?
• Is the rear of the appliance cleaned of dust regularly?

If any of these points doesn’t apply, it’s worth taking a hard look - and for longer absences, it’s usually better to unplug decisively.

Other appliances you should never leave plugged in unnecessarily

The fridge is the main focus, but it isn’t the only issue. Many homes are effectively permanent building sites for electricity use. Before you go away, it pays to walk through every room.

A quick overview of particularly problematic power-hungry appliances

• Tumble dryer: Never leave it unattended while running. Even after the programme ends, residual heat can remain.
• Dishwasher: Electronics, heating elements and moisture - a risky combination if something fails.
• Kettle and toaster: Small but high-power devices, often left in extension leads.
• Coffee machines with a hotplate: If faulty, they can keep heating for hours.
• Extension leads: Especially when several high-load appliances are connected at the same time.

"Appliances with heating elements should, as a rule, be disconnected from the mains before departure - they are among the most frequent causes of house fires."

What insurers cover - and when they start asking questions

After a fire, assessors look closely at the details. Where did the fire start? Which appliance was located there? How old was it? Was it connected correctly? If you acted negligently, you risk reductions in the settlement.

For instance, if someone leaves a very old fridge running - one that has already been repaired several times and has shown problems before - they may, in extreme cases, face an allegation of gross negligence. Insurers then examine whether the damage could have been reduced if the appliance had been switched off during a longer absence.

Realistic scenarios: what can be tied to a worst-case incident

A flat fire rarely affects just one household. In blocks of flats, smoke and heat spread quickly into neighbouring properties. The result can include water damage from the fire brigade, soot in communal stairwells, damaged services, and closures lasting days.

Alongside material loss, psychological impacts can follow. Watching your home burn often destroys your sense of safety. Knowing the cause was an unremarkable fridge that nobody took seriously can intensify that feeling of helplessness.

How to assess your own risk honestly

A simple checklist helps you judge the situation:

• Is my fridge older than ten to fifteen years?
• Is it squeezed into a fitted kitchen with no airflow behind it?
• Have I not cleaned behind the appliance for years?
• Are there occasional strange noises or smells?
• Do I often leave home for several days without disconnecting appliances from the mains?

The more times you answer “Yes”, the more it may be worth speaking to a qualified engineer - or seriously considering switching the fridge off consistently before longer periods away.

Why small pre-departure routines can prevent major damage

When people plan a holiday, they think about flight times, reservations and sun cream. An electricity check is rarely on the list. Yet a final walk-through of the kitchen and living room takes only minutes and lowers several risks at once: fire, power surges during thunderstorms, and unnecessary electricity costs.

The simplest habit is to deliberately scan sockets and appliances just before you leave. Glowing standby lights, quietly humming power adapters, blinking coffee machines - all are candidates for unplugging. Then there’s only one conscious decision left with the fridge: keep it running, or empty it and switch it off.

If you don’t make that decision on autopilot, but weigh up the appliance’s age, condition and the length of your absence, you act responsibly - and reduce the chance of ever having to say: "I lost everything because of it."