In a living room or kitchen, set the sensor target to 50-55% and leave the unit in its natural mode. It holds the level and cycles off, and the swinging louvre spreads the dry air instead of blowing it in one direction. Leave a gap of at least 20 cm around the grille so the airflow is not blocked.
For laundry, close the door of a small room, place the airer in the middle and use the laundry mode. A full load will dry in a matter of hours, though thick items such as towels and jeans take longer, so turn them halfway through. The laundry mode is the loudest setting, so run it while you are out or in a room you are not using. With the supplied drain hose to a sink or floor drain, a long session needs no emptying.
In a bedroom, use the sleep mode and run the machine before bed, then let the timer or sensor switch it off. A 20 litre compressor is more machine than most bedrooms need, so a 12 litre model such as the Pro Breeze 12L OmniDry is quieter and lighter.
For mould and condensation, put the unit in the dampest room with the doors closed, run it continuously for the first day and then drop to the sensor. Wipe window frames and shower walls by hand as well, because a dehumidifier cannot remove mould that has already taken hold.
Empty and rinse the tank every few weeks, wash the dust filter under the tap when it picks up lint, and replace the carbon filter when the musty smell returns. Let the filters dry fully before refitting. Compressor units lose efficiency as the room cools, so for an unheated garage choose a desiccant model such as the EcoAir DD3 Classic MK3.