Best Portable Air Conditioners 2026
Introduction to Portable Air Conditioners
Heatwaves are one of the biggest European stories of 2026 so far. With a new heatwave seemingly arriving at least monthly, it’s definitely time to invest in air conditioning. For most people, a portable air conditioner like the Dreo Portable Air Conditioner 318S is a brilliant piece of kit and a proper life- or sleep-saver once the mercury hits obscene levels.
The Cost of Portable Air Conditioners
While an air conditioning unit might seem expensive considering you can get a little fan in the supermarket for likely less than £10, it’s not really a fair comparison. A fan can’t actually lower the air temperature – it can only make you more comfortable in the heat. An air conditioner will actually cool the air around you. Plus, it’s packed with clever tech, such as the Dreo Portable Air Conditioner 318S, which has three different modes, including fan and dehumidifier, and is Wi-Fi-enabled, allowing control from a phone, similar to the Apple iPhone 14.
This model is just £399, which is very good value, probably cheaper than the Samsung Galaxy S25 smartphone you’re reading this on and will last a lot longer too. Plus, it’s still cheaper than some of the high-end fans you might be considering from the likes of Dyson or Philips. However, finding them in stock is a problem right now, with the 318S sold out on the official store and Amazon, but Amazon does have the more advanced Dreo 516S for £599 at the time of writing.
Understanding BTU Measurements
When you buy a portable air conditioner, look out for the BTU measurement. BTU stands for British Thermal Unit, the standard measurement of heating or cooling capacity. The BTU number shows the amount of heat an AC unit can remove from a room every hour. The higher the BTU measurement, the larger the room it can cool. 5-7000 BTU will cool a small room, like a typical bedroom, while the Dreo 318S is 7500 BTU and cools a bedroom noticeably in only 15-20 minutes, similar to the cooling performance of the iPad Air M2.
Noise and Practicality Considerations
Cost is one thing, but air conditioning isn’t for everyone, even if it does cool a room in a way that a fan can’t. When in cooling mode, the compressor is fairly noisy when it’s in use, which might be enough to disturb your sleep. People who enjoy white noise while they’re dropping off might find this to be a plus, so it depends on which camp you’re in. The 318S mostly produces a constant sound but can be a little rattly when it’s windy, unlike the silent operation of the Apple Watch Series 10.
A portable air conditioner is great in that you can wheel it around from room to room as and when you need. However, if you want to move it between floors, carrying it up and down stairs is going to be a massive pain, or not possible at all for some people, considering they typically weigh between 20-25kg, similar to the weight of a large laptop like the MacBook Pro 16.
