Dehumidifier Akto 521 Digital (WDH-520EB series)

New edition of the proven dehumidifier – powerful and modernized

The popular dehumidifier is back! With a state-of-the-art update, it combines modern features with the proven reliability of previous models. Ideal for dehumidifying basements, hobby rooms, or speeding up laundry drying.

Easy transport and operation

Weighing just 13 kg, with a carrying handle and wheels, the dehumidifier is highly mobile and can be easily moved between rooms – perfect for flexible use in the basement or laundry room. Thanks to the new digital control, the target humidity, ventilation level, and timer can be conveniently set at the touch of a button. Fully automatic operation starts as needed and pauses as soon as the desired humidity level is reached – including fan shutdown.

The air is sucked in through the back, cleaned by a removable and washable filter and then blown out upwards, which ensures even air circulation.

Environmentally friendly thanks to modern refrigerants

This dehumidifier uses the environmentally friendly refrigerant R290 , which has a Global Warming Potential (GWP) of just 3 – a 99.85% reduction compared to older models. This makes it particularly sustainable and resource-efficient.

Excellent performance and reliability

The device impresses with its high durability and has received multiple awards in consumer tests. Its dehumidification performance remains consistent even in cooler rooms such as basements. It is suitable for rooms up to 50 m² (125 m³) and operates reliably at temperatures starting at 5 °C.

Dehumidification performance

Advantages and features

• Digital control: Target humidity adjustable in 5% increments from 30% to 90%
• Continuous operation possible
• Low power consumption: Average 270 W in continuous operation (at 20 °C/60 % RH)
• Clear display with actual humidity indicator
• Timer function: Schedule operation for 1–24 hours
• Automatic mode: Automatic on/off depending on humidity
• Two ventilation levels for flexible air circulation
• Maintenance-free: washable filter and closed coolant circuit
• Equipped with TÜV-tested rotary compressor
• Auto-stop when water tank is full with warning light
• Transparent 5-liter condensate tank and hose connection for continuous operation
• SmartHome-capable, controllable via WLAN socket or timer
• Mobility: Easy to transport thanks to carrying handle and wheels
• Ready to use without installation

Possible uses

Basement dehumidification:
Perfect for regulating seasonal humidity fluctuations or preventing condensation on windows, walls and pipes.

Mold prevention:
Reliable protection against mold and musty odors. Recommended target humidity: 50–60%.

Drying clothes:
Efficient as a mobile tumble dryer: Dries 1-2 washing machine loads per day in enclosed, slightly temperate rooms.

Technical data

• Voltage: 220–240V / 50Hz
• Power consumption: 270 W (at 20 °C/60 % RH), max. 505 W
• Dehumidification capacity: 20 liters/day (30 °C/80% RH)
• Water tank volume: 5 liters
• Compressor: rotary compressor
• Refrigerant: R290 (115 g)
• Dimensions (H x W x D): 62.1 x 34.5 x 26.1 cm
• Weight: 13 kg
• Noise level: 47 dB (1 m distance)
• Operating temperature: 5 °C to 32 °C
• Room size: Up to 50 m² for general dehumidification, up to 10 m² for intensive laundry drying
• Hose connection: Yes (12 mm inner diameter)
• Plug: EU with Swiss adapter
• Warranty: 2 years

This dehumidifier is the ideal solution for a wide range of applications – modern, efficient and reliable!