The LCD control panel makes the dehumidifier really easy to use – you simply select the right setting for your space, including the humidity levels, and away you go.

This Russell Hobbs RHDH1061G Portable Dehumidifier is ideal for taking from one place to the next, thanks to its portable design. Plus, its 780W power consumption is one of the lowest of all the air con units we've tested, meaning it offers lower running costs too. After being massively impressed by the brand's virtually silent Duux Whisper Flex Ultimate Fan, we had high hopes this unit was going to be just as whisper-quiet, but sadly that also wasn't to be, with the North Smart proving just as loud as your average portable air con.

We should also point out that this dehumidifier is loud, and you can’t reduce the noise by switching to a lower fan speed.

I bought this product for my Mum and she can just roll it out of her storage cupboard whenever she needs it. A desuperheater-equipped heat pump can heat water 2 to 3 times more efficiently than an ordinary electric water heater.And even in systems that aren't running the very highest-end or hottest CPUs, designers have been looking for ways to improve on air cooling efficiency, if only to hold the line on noise levels while the average TDP of enthusiast-class processors continues to eke up. We were surprised how much water it used, we had to top it up with a litre of water 3 or 4 times a day when changing the ice packs, so airing the room out when it's not in use is probably a good idea.