Humidifiers use one of four evaporation types: steam, evaporation, ultrasonic and impelling. Most modern humidifiers have cool and warm mist settings, each with hard water caveats. Cool mist: Cool ...

But buy the wrong one and it could be fiddly to fill, make noisy dripping sounds or just not be very effective at humidifying the air. Find out our top picks of the best humidifiers in the table below ...