How Much Does a Fridge Freezer Cost to Run in Summer? (UK 2026 Guide)

What that range actually costs you in pounds depends entirely on the unit rate you pay per kWh. Because unit rates change with each Ofgem quarterly price cap, and because your tariff may differ from the standard cap rate, it is not useful to quote a specific annual £ figure without knowing your rate. Use our free fridge freezer running cost calculator — enter your appliance's wattage and your own unit rate and it will give you a personal estimate for the day, week, and year. Results are estimates only — always check against your own bill or supplier.

In summer, the ambient temperature in your kitchen is higher. Heat leaks into the cabinet more quickly through the insulation, so the internal temperature rises faster — and the compressor has to kick in more often to compensate. The appliance is doing more work to maintain the same cold temperature. The practical result is a modest but real increase in electricity consumption during warmer months. If your kitchen faces south or sits in direct sunlight, or if your fridge is positioned next to a cooker or radiator, the effect is more pronounced.

• Age and energy rating: Older appliances are generally far less efficient than modern ones. A fridge freezer from ten or fifteen years ago may consume two or three times as much electricity as a current A-rated equivalent of the same capacity.
• Size and capacity: A larger appliance has more interior volume to keep cold, more surface area for heat to enter, and typically a larger, more powerful compressor. A large American-style fridge freezer will cost considerably more to run per year than a compact under-counter model.
• How full it is: A fridge freezer that is well stocked actually retains its temperature more efficiently than an empty one — the cold mass of food acts as a thermal buffer. Running a nearly-empty fridge freezer is mildly less efficient.
• Where it is positioned: A fridge freezer placed next to a heat source (cooker, boiler, direct sunlight through a window) works harder all year round. In summer, this compounds the ambient-temperature effect.
• Door habits: Every time you open the fridge, warm air enters and the compressor has to compensate. In summer, that incoming air is warmer, so the effect is slightly greater.

Once you have that figure, multiply it by your unit rate (in pence per kWh) to get a rough annual cost. Or — more simply — enter both figures into our free fridge freezer running cost calculator and it handles the maths instantly. If you want to explore costs for other always-on and high-use appliances in your home, our energy tools hub brings together calculators for electric heaters, kettles, washing machines, tumble dryers, dishwashers, and more.

• Keep it away from heat sources. Position your fridge freezer away from the cooker, boiler, and out of direct sunlight where possible. Even a small reduction in ambient temperature around the appliance reduces compressor cycling.
• Keep the coils or vents clear. Most fridge freezers need a few centimetres of clearance behind and above to dissipate heat. Blocking this forces the motor to work harder.
• Check door seals regularly. A worn or cracked door seal lets warm air in continuously. Test yours by closing the door on a piece of paper — if it slides out easily, the seal may need replacing.
• Set the temperature appropriately. The recommended fridge temperature is 3–5°C; the freezer should be at or around -18°C. Setting the fridge colder than necessary increases energy use without benefiting food safety.
• Defrost the freezer compartment. Ice build-up acts as insulation that makes the freezer work harder. If you have a manual-defrost freezer, keep on top of it.
• Let hot food cool before putting it in. Placing hot or warm food directly into the fridge makes the compressor work harder. Let it cool to room temperature first (within food safety limits — no longer than about an hour for most cooked food).

We cannot advise on that choice, but the calculator can help you quantify the running cost difference between your current appliance and a potential replacement by comparing the two kWh figures. Results are estimates only — always check against your own bill or supplier.

Q: How much does a fridge freezer cost to run per year in the UK? A: It varies widely. A typical fridge freezer uses roughly 100–400 kWh per year depending on its size, age, and efficiency rating. The annual cost in pounds depends on your current unit rate. Use the TrimMyBills fridge freezer running cost calculator and enter your own appliance wattage and tariff for a personal estimate.

Q: What is the cheapest type of fridge freezer to run in the UK? A: As a general rule, smaller and newer models with higher energy ratings are cheaper to run. A modern freestanding fridge freezer with a good energy rating will typically use considerably less electricity per year than an older, larger, or less efficient model. Check the annual kWh figure on the energy label when comparing models.

Q: Where can I find my fridge freezer's wattage? A: Look for a label on the interior wall or rear of the appliance, or search the model number online for the manufacturer's specification sheet. The energy label on the door also shows an annual kWh consumption figure, which is a useful starting point for estimating running costs.

Q: How do I reduce my fridge freezer electricity use in summer? A: Keep the appliance away from heat sources such as cookers and direct sunlight, ensure door seals are in good condition, maintain a few centimetres of clearance around the vents, and set the temperature to the recommended levels (3–5°C for the fridge, -18°C for the freezer). These steps reduce the amount of work the compressor has to do, particularly when ambient temperatures are higher.