Noisy – Air coolers are not particularly quiet units and are not the right choice if quiet cooling is needed.

An Air Conditioner does also lower the ambient temperature of a room like an Evaporative Air Cooler but requires significant energy to do so. They require the use of a chemical refrigerant gas to condense hot air and maintain the cooling by expelling that hot air outdoors via a hose. Evaporative Coolers also come with a variable thermostat and the unit will work to cool down to your set temperature. Evaporative air coolers are suitable for outdoor use where Air Conditioning units work best in enclosed environments.Usually, there are nozzles of different sizes, and the mist consists of smaller and bigger droplets. This has a positive side because the bigger water drops fall with some contaminants in the air and get purified (they also act as an air purifier).

Water Tank: The Water tank capacity determines how often you'll need to empty the Air Cooler, as the device must always have enough water for operation. The smaller the tank, the more often you'll need to top it up. It should also be easy to access the tank. Some built in tanks also have an ice compartment, which increases the machine's cooling performance. The tank should be able to hold water for at least 10 - 12 hours.There is a remote control and a display that shows you what the current temperature and fan setting is. This display is a little hard to read, but we can forgive this minor issue, given how good the fan is. Even better, the VonHaus 35″ Tower Fan is one of the cheapest fans that we’ve tested, too. If you’re after a powerful tower fan at a great price, look no further.