Stadler Form Karl Humidifier 100 m2 Evaporative 690 g/h with Wi-Fi

An evaporative humidifier from the Swiss maker Stadler Form, compact in format despite covering rooms of up to 100 m2 according to the manufacturer, with a stated output of up to 690 g/h. The tank fills from the top without taking the unit apart, and the evaporation cassette carries an antibacterial treatment. Working by cool evaporation it sprays no water droplets and leaves no limescale residue on furniture; the power draw is low and the unit is run from the brand app.

When choosing a humidifier it is worth comparing the room size declared by the manufacturer, the output in millilitres per hour, the tank volume and the running time that follows from the two, the noise level in night mode and the technology used, because ultrasonic units need softened water or an anti-scale cartridge while cool evaporation leaves no white dust. The tank is emptied and cleaned as often as the manual states, the unit stands on a flat, stable surface away from wooden furniture and textiles, and relative humidity is best kept between 40 and 60 per cent.

The data shown is taken from the documentation published by the manufacturer; where they differ, the official product sheet prevails. The appliance is covered by the two-year statutory warranty of conformity (RDL 1/2007).