I am an idiot for things like this, and bought it on impulse so I could test whether it worked or not. Why have a fan on full blast, wasting unnecessary battery power, when you just need a nice ambient cool atmosphere around your desk?

A small number of products may require an additional postage cost due to the size of the parcel or other special considerations. More than just a fan, the JML Chillmax Air GO is a portable space cooler that’s primed to deliver cool air anywhere! However, it is possible some people might find the minor cooling effect and increased humidity of the Chillmax/InstaChill (and similar devices) beneficial, so the choice is yours. We act as a credit broker not a lender, offering credit products provided exclusively by Klarna Bank AB UK branch (BR020956), a branch of Klarna AB (556737-0431) which is authorised and regulated by the Swedish Financial Services Authority. Robert Dyas Holdings Limited T/A Robert Dyas is an appointed representative of Product Partnerships Limited which is authorised and regulated by the Financial Conduct Authority (FRN 626349).

Chillmax Air gives you the best features of both fans and air conditioning in one, compact unit that’s also a night light. We recommend you replace your filter every three to six months so this replacement filter will last you all Summer! With enough charge to hold for months, and enough power to give you up to six hours of personal cooling, you can rely on Chillmax Go Fan to keep you cool all day, wherever you go! The large capacity water reservoir, combined with the filter, means that Chillmax Air holds a lot of water, so you can rely on Chillmax Air to run for up to ten hours, that’s a whole night’s sleep, or an entire working day in a hot stuffy office, breathing in cool, humid air! JML sells the humidification as a positive without relating it to the comfort relationship between temperature and %RH, but note what I said above.

Just clamp it to your desk, table, the handle of a pram or buggy, take it in the car with you- wherever you want to go, you can have personal cool air at all times!There are two buttons on the top rear, one which changes the fan speed to one of three settings (or off), with a blue LED for each, and another button that turns the night light on or off. This is the amount of moisture in the air expressed as a percentage of the maximum amount it could hold at that temperature, hence the units %RH.

The ambient temperature where I ran the test was about 29ºC (this was just before the 2019 heatwave kicked in properly). Let’s work on the assumption that it would be able to get the same 4ºC drop no matter what the ambient temperature was.The unit consists of a reservoir at the top, which you fill with normal tap water, and this drips down on to a radiator unit which has ten sideways-stacked fibre panels in it through which a fan blows air. If you believed the ads, you’d be forgiven for thinking you’re going to get frostbite if you sit too close. Suppliers of these devices say that they need good ventilation or extraction, and I would imagine that’s so the humid air can escape.

PLUS, Chillmax Air has a built-in soft-glow blue LED light that can be set to two levels of brightness so it's the perfect night light for those hot summer nights so you get a humidifier, a cooler and a light from a single plug socket. In the case of the InstaChill, it will add a lot more humidity than the ChillMax, and as I have explained and demonstrated, the ChillMax is bad enough when it comes to increasing the ‘feels like’ temperature.You’re probably aware that you can have a hot summer day in the high 20s where it is pleasant and comfortable, but a cooler and overcast day might be horribly sticky – or muggy. PLUS, Chillmax Air has a built-in soft-glow blue LED light so it’s the perfect night light for those hot summer nights, so you get a humidifier, a cooler and a light from a single plug socket. Chillmax Air Go is portable and rechargeable so you can charge up the fan, fill the water tank and away you go!