Many people have been left stunned to discover what fridge dial numbers actually means, as it turns out they’re not indicative of temperature. These essential kitchen appliances, whether they be integrated fridge freezers or standalone units, have been used for years to preserve crucial items like milk, meat, and vegetables.

However, if you don’t know what it does, then you may have your fridge set incorrectly. Inside the fridge, typically near the door hinge at the top right, there’s a small white dial for temperature adjustment.

But here’s the twist: the numbers don’t actually correspond to degrees Celsius in most instances. Reddit users have shed light on this misconception stating that the dial numbers represent the intensity of the cooling function.

Essentially, a higher number means a stronger chilling effect. One Reddit user clarified: “Higher is colder… the numbers on the fridge’s temperature dial indicate refrigerant power. The higher the number goes the colder the fridge will maintain. Setting it to 5 will make your fridge the coldest.”

This means that those who assume the number 1 represents 1°C, and thus a cooler setting, are mistaken, reports the Express. Incorrect settings could lead to food spoiling more rapidly or an excessive accumulation of ice at the back of the fridge.

Some have noted that, just to be contrary, there are a few rogue fridge models that actually use degrees C. However, there’s a simple trick to figure out how yours operates.

Here’s how you can find out: “Turn the dial in any direction until the compressor (the black motor at the back) either turns on or off. If the compressor is already on (usually you hear a humming noise) and you turn it towards a higher number and it turns off (you’ll hear a click and a little rattle), you’re making it hotter. (It goes off because it’s already too cold).”

“If you hear it come on then you’re making it cooler. It sounds complicated but basically if the compressor comes on you’re making it cooler and if it goes off, warmer. Turn and see which way does what!”