Why is it recommended to put an A4 paper in the fridge during heatwaves?

With temperatures on the rise in parts of the UK and Europe, it is natural for most of us to think about how we will keep ourselves cool. However, there is one other household appliance that struggles in warm weather conditions, and you may be paying far more than you should because of its inefficiency.

Raccontata datimesofindia.indiatimes.com