We see if an Amazon cooler costing less than £30 can beat the heat

My bedroom is south facing, so when the temperature gets up outside, it starts soaring inside. In the past, I've had to endure 30C by the time I tuck in for the night, and that is not comfortable.

I've always fancied a proper air-conditioning unit, but they're expensive, cumbersome, they need internal ducting, and - did I mention they're expensive?

However, when the nice people at Kleeneze offered to let me test out their KL3139V2 Ice Cube Plus+ I wondered if a decent compromise between a full-on air conditioner and my trusty old desktop fan might be within reach.

I have to admit, I was skeptical at first. Several years ago I bought a very similar-looking tabletop device off ebay for around a tenner and, while it did a reasonable job of cooling my office, it died within a few days.

They are, after all, just a PC fan that blows air across some water reservoirs and a soggy filter. So in my head there was always going to be a limit to how effective they were.

But Kleeneze's Ice Cube Plus+ does come with a few tricks up its sleeve to ensure it's effective. Firstly, the fan is very powerful. On its top setting, it's quite noisy, but that's because it's got grunt. And you need a fan with grunt when there's a heatwave going on.

Secondly, the filter that soaks up the water is large and dense. And that's good, because it means there's more cold air being blown at you or around your room.

Thirdly, and this is the best bit, you can freeze the water bottles within a few hours and effectively have a slow release of near-zero degree water being evaporated and blown around.

And it's very effective. At least to a point. Cards on the table, it will not cool a room down as well as an air-conditioning unit. This should come as no