concertina hose to port the warm exhaust air either through a hole in the wall or a partly opened door. Built-in casters allow you to easily move the unit to any room in the house with a simple push, where the compact and upright design allows it to fit anywhere without taking up too much space. A real powerhouse with a power of 1110 watts, making it suitable for a range of 80 m3 and easily cools your living-, work- or bedroom. It’s not much to look at and the whine from it means that the Princess Smart Air Cooler isn’t great for a bedroom. Granted, this little square desktop unit isn’t a proper air conditioner but it is at least capable of blowing a chilled breeze from a few feet away.

All in all, this is a sterling portable that is surprisingly quiet, especially when the compressor is off (it kicks in intermittently to maintain room temperature).Before we tackle its latest evaporative cooler – the Smart Air Cooler – we’re first taking a look at its new 12,000 BTU Smart Air Conditioner. You need to be careful of the tubes and cable while inserting the tank, then reach into the water to clip down the pump unit. The fan’s whine means I wouldn’t want it running overnight in my bedroom, but it did keep me cool while working on hot summer days.

Before we begin it's important to explain what we mean by air conditioners: we're talking appliances that use refrigerants, just like fridges and in-car air-con systems do, to take warm air and cool it down very rapidly. Its digital interface and included remote control allow access to all main functions: temperature, fan speed and timer. The top-mounted electronic display is straightforward but you can always access its functions – cool, heat, dry and fan – using the remote control. If you're looking for a pretty compact air conditioning unit - this option from NETTA is a top contender. Today, we have millions of users a month from around the world, and assess more than 1,000 products a year.

While an air conditioner is like a big fridge for your room, this works by evaporating water – much like sweating. Editorial independence means being able to give an unbiased verdict about a product or company, with the avoidance of conflicts of interest. As with other evaporative air coolers, the Princess Smart Air Cooler is nothing like as effective as a true air conditioner.

All you have to do is fill the large 35 litre water tank with water and once you've filled the tank, simply turn the machine on and choose which of the three fan speeds you want the machine to run on. Control your 12000 BTU Smart Air Conditioner in the conventional way via the control panel and the remote control or choose SMART with the Princess at Home app and voice control. However, don’t expect it to make an ounce of difference to a room’s temperature because it’s strictly designed for personal, close-up use. It’s a shame, though, that there’s no temperature or humidity sensor, which would allow you to turn it on above a certain heat, for example. This powerful air cooler is also a humidifier and air cleaner that doesn't need a window venting kit or any permanent installation.But it makes much more sense on a cooler, as it allows you to pre-cool a space before you get there.

The Princess Smart Air Conditioner 9000 352900 is a monobloc mobile air conditioner designed to cool rooms up to 80 m³ in volume.

Unless you’re a heavy sleeper and someone who can nod off in a hurricane, we would advise switching it on an hour or two before going to bed and keeping the door closed for maximum cooling potential. With smart controls making it easy to use, this is a great choice if you actually want to cool the air without incurring the charges of running an air conditioner. In practice, the Princess Smart Air Cooler can’t properly chill a room on a hot day, but it does produce a genuine cooling effect – especially up close.