Introduction
A refrigerator runs continuously, which makes it one of the most constant sources of electricity use in a household. The good news: a few settings and habits are enough to cut that consumption noticeably, without any loss in food preservation. Here are the most effective steps, based on the recommendations of the Swiss energy agencies.
1. Set the Right Temperature
The recommended temperature for a refrigerator is around 5°C, and -18°C for the freezer. There is no need to go colder: according to energie-environnement.ch, a fridge set to 2°C uses roughly 20% more electricity than at 5°C. Every unnecessary degree adds up over the year. A simple thermometer placed inside the appliance helps you get it right.
To go further, see our articles on how to adjust your fridge temperature and the importance of temperature in your fridge.
2. Mind the Placement and Ventilation
This factor is often underestimated: consumption depends heavily on the surrounding temperature. An appliance placed next to an oven or radiator, or in direct sunlight, has to work harder. Install it in a cool spot and leave a few centimetres behind it so the compressor and rear coils can release their heat.
3. Do Not Put Hot Food in the Fridge
A dish that is still warm forces the appliance to run at full power for nothing. Let your food cool to room temperature first (without leaving it out too long, for hygiene reasons) before storing it.
4. Limit Door Openings
Every time you open the door, cold air escapes and the compressor has to regenerate it. Keep the door open as briefly as possible and check the seals regularly: a worn gasket lets warm air in constantly.
5. Defrost Regularly
Ice acts as an insulating layer that forces the appliance to consume more. The effect is far from trivial: according to energie-environnement.ch, a 5 cm layer of ice in a freezer can double its electricity consumption. So defrost as soon as the layer gets thick. Our guides walk you through it: how to defrost your fridge freezer.
6. Fill It Sensibly
A well-filled refrigerator holds the cold better during door openings and power cuts, thanks to the thermal mass of its contents. The effect on consumption during normal running is, however, modest: the key point is simply not to overload the appliance, as air must circulate freely for even cooling. We compared both cases in empty vs full fridge: which uses more energy.
7. Maintain Your Appliance
Regularly cleaning the rear coils (where dust builds up) and the door seals keeps the appliance running efficiently, and therefore consuming less. Consistent maintenance also extends its lifespan.
What About When You Buy?
The biggest saving happens at purchase: an appliance rated well on the energy label (the A to G scale since 2021) uses far less over its whole lifetime. Our guide to choosing a refrigerator helps you pick, and see how the numbers add up in how your fridge can save you money.
Conclusion
Set it to 5°C, place it well, avoid hot food, defrost and maintain it: these simple steps cut your electricity bill and your environmental footprint, with no compromise on preservation.
Sources: energie-environnement.ch, SwissEnergy.