There’s nothing like an unexpected heatwave to make you realise just how ill-equipped a typical British bedroom is for summer. Over the last month or so, with the UK being treated to some properly warm spring weather, I found myself looking for smarter ways to keep cool without firing up noisy fans or dragging in clunky air con units.

Thankfully, I’d unintentionally yet perfectly timed the arrival of a EcoFlow Wave 3 review unit, which landed on my doorstep just as things started to heat up. Promising to be a clever, all-in-one solution for controlling the temperature in small spaces, this portable heat pump cools, dehumidifies, and is small enough to lug between a bedroom, shed or even a van.

On paper, it’s got everything, including solar charging options and smart app control. But features mean nothing if it can’t deliver when it’s roasting outside. I’ve been using the device for the past month or so alongside EcoFlow’s hefty Add-On Battery, which unlocks wireless use for up to eight hours. So, is it the portable summer solution we’ve all been waiting for?

The EcoFlow Wave 3 was launched worldwide in May 2025 and is available from the brand’s official web store across most EU countries such as the UK, Spain, France, Germany and Italy as well as North America, including the USA and Canada, as well as select countries across Asia Pacific, the Middle East and Africa.