Portable Evaporative Air Cooler Windowless with Timer and Wheels

This is an evaporative cooler, not a refrigerant air conditioner: you pour water into a 300 ml tank and a fan draws air across it, so what leaves the unit is cooler and more humid than the air in the room. Nothing has to be vented, which is why there is no window kit and no installation — it stands on the floor on four casters and rolls to wherever you are sitting.

Key features of this portable evaporative cooler:
- 300 ml water tank, filled with cold water; there is no refrigerant and no exhaust hose
- Six fan speeds, and it runs as a plain fan when the tank is empty
- Motorized left-and-right swing; the up-and-down louver is set by hand
- 8-hour timer that shuts the unit off on its own
- Four caster wheels under a floor-standing body
- Runs on 110V, with the supplier listing 18W for the cooling function

A 300 ml tank is a small reservoir. Plan on topping it up through a hot afternoon rather than filling it once in the morning.