British houses are built to retain heat, so even with the mildest of summer temperatures, many homes can get a little stuffy inside and are in desperate need of air conditioning - but to install a full setup can cost thousands.
Fortunately, there are some great portable air conditioners around - such as the top-rated Zastion Oscillating Portable Mobile Air Conditioner.
It may be small, but it's racking up thousands of five-star reviews due to its mighty cooling power.
Ringing in at under £20, it's a lot less expensive than larger air conditioning units and more energy-efficient, so you don't have to worry about facing a massive bill. It's no surprise that it currently takes the top slot in Amazon's mobile air conditioners best-seller list.
Why we rate it
This clever four-in-one device acts as a desk fan, air humidifier and purifier, as well as a powerful air conditioner cooler.
To get the full cooling effect, simply fill it with water and a few ice cubes into the tank, choose your 'wind' speed (high, medium, or low) and let it mist you with a cooling breeze.
It also has soft, LED lights that are super soothing if you want to use it at night and it has a timer you can set at two, four or six hours - perfect if you want to stay cool while trying to get to sleep.
There's no concern over it chugging away loudly and distracting colleagues on Zoom meetings, as it work powerfully at a low noise level. Shoppers say it's "very quite" and easy to move around thanks to its portable handle.
What the reviews say
It has over 6,800 five-star reviews, with new positive reviews being left daily. In fact, it's rated an impressive 4.8 out of 5 stars for value for money.
Most users are really impressed at the fact that it truly is small but mighty. People love that it doesn't take up too much space, and is small enough to put on your desk while working, or your bedside table if you're struggling to sleep in warmer weather.
Shoppers described it as "perfectly sized and effective", saying its very quick to produce cool air and is easy to fall asleep with on.
Women who are going through the menopause have also said it's "absolutely amazing".
Meanwhile, other customers have purchased multiple for various family members, one shopper said they've already "bought 3", plus two to give as gifts.