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Antec Kühler H2O K240 Review

Overall, while it’s by no means the best cooler we have tested, the Kühler H2O K240 does show very similar performance to other 240 AIO liquid coolers with dual fan configurations. It’s not groundbreaking but still delivers solid results.

It’s not the quietest cooler we’ve ever tested either, but compared to other AIOs the K240 is actually the second quietest 240mm liquid cooler tested so far on our new testing setup.

So taken on its own, the K240 is certainly decent but nothing special. The real kicker is the pricing – at £59.99 the Kühler H2O K240 is the cheapest 240mm AIO liquid cooler we’ve tested, in some instances by around £40 to £50, so it actually looks pretty competitive.

When I say competitive, if you consider the Cooler Master MA410M tested previously shows higher temperatures, by up to an extra 10 degrees, and is available for the same price – the K240 looks like a pretty good deal.

Overall, although not super feature-laden, what’s really impressive is that with fancy LED lighting stripped away Antec have managed to produce a really high-quality cooler, at a competitive price. The standout feature is the lower profile CPU block, with the pump mounted in the radiator, and although this is not industry changing, it does help with installation and an overall cleaner build.

It’s a simple no-nonsense cooler that feels reassuringly tough. There doesn’t appear to be any area where Antec has had to make sacrifices to keep the price competitive, and at £60 it’s simply very well priced for a 240mm AIO.

The Kühler H2O K240 is currently available from Overclockers UK for £59.99 inc. VAT HERE.


  • Easy to install for a first time builder.
  • Clean aesthetic and impressive build quality.
  • Really competitively priced at £59.99.


  • Performance could be better when compared to most 240mm AIO coolers.
  • LED fans being blue does limit aesthetic compatibility for those with a particular colour of build in mind.

KitGuru says: If you are considering a new budget build with an unlocked CPU, and would like to dabble in some overclocking, the K240 is a great choice. Ease of installation alongside the really premium build quality is likely to impress, especially when considering the K240 only costs £59.99.

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Rating: 8.0.

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