In this mode, the unit circulates the air around the room rather than actively cooling it but it does this effectively and the direction of airflow can be changed using the black lever on the front of the vent. The use of a window kit prevents warm air from outside entering the room, making the cooling more efficient. However, while all seems well when you’re getting a golden tan, that heat becomes unbearable when you head indoors. Luckily, we’ve breezed to the rescue with a guide to the best models available, whether you’re keen to cool down an overheated office space, sleep soundly with a breath of fresh air, or splash out on an all-singing, all-dancing piece of kit which will clean your air as well as cooling it. This allows you to set the air conditioner to operate for anytime between one and 24 hours, so you can set it to come on for an hour before you go to bed, or before you get home in the evening, resulting in rooms that are the perfect temperature when you need them.

There are three modes – cooling, dehumidifying and a standalone fan mode – as well as a handy child lock button. According to the manual, the air filters must be cleaned once every two weeks because otherwise dust will collect on them and restrict the airflow which could affect the efficiency of the unit.

The second is the flexible window kit which comprises a large piece of white fabric and a roll of adhesive Velcro which you can use on all other types of windows/doors. The sleep mode reduces the speed of the fan and also the noise the unit makes – making it easier for you to cool your room and sleep soundly, however warm the night is. Normally, we suffer through summer with the windows open – a nightmare for our hayfever – and a fan, but now, we will be turning to this air conditioner time and again.

The Sleep Mode keeps the unit in low fan speed to ensure the lowest possible noise level, you can combine this with the Off Timer to ensure that you do not wake up cold during the night.Shifting it from room to room won’t result in an accidental back injury either, not only because of its four slick wheels but its weight, which comes in at 32kg – surprisingly low for such a powerful air conditioner. As well as the unit, inside the box you’ll get an exhaust hose and two sealing kits – one for sliding windows and one for hinged.

Not only has the energy efficiency increased, but we have also used the new R290 refrigerant making the air conditioners much more environmentally friendly. Plus, and this is probably its biggest selling point, it also has a Class A energy efficiency rating meaning its 690 times more eco-friendly and we have to say, that’s pretty cool in itself.While it does look like a big clunking refrigerator, especially sitting in the corner of our room, it’s extremely powerful, cooling our room down by 6C in just 25 minutes. Unit used but fully functional, possible light cosmetic damage to unit, all accessories included, packaging may be damaged. To get the very best use out of the MeacoCool air conditioning range, we recommend pre-cooling rooms before they need to be used so that they are nice and cool for when they do need to be used. This is a brilliant, personal air conditioner which does all the things larger ones do without taking up a ridiculous amount of space.