★ Power · 20 L 8.1 / 10 · Editorial score

Editorial rating based on manufacturer specs and Amazon catalogue data. We do not trial products ourselves. How we rate

Klarstein DryFy 20L: the most powerful dehumidifier with a large tank

Prices in euros from Amazon.de, as of 11 June 2026. Prices and availability may differ on Amazon.co.uk.

By Seydhan Cakmak · Editor-in-chief · Updated: · AI-translated from the German original

The Klarstein DryFy 20L is the powerhouse in the comparison: 20 litres of dehumidification per day, combined with the largest tank in the field at 5 litres, which means emptying less often and a fast effect in acutely damp rooms. The humidistat regulates between 30 and 80 %, a 24 hour timer and the auto-restart function after a power cut make it practical for everyday use, and the laundry drying mode helps in winter. Important to know: at 46 dB and 15 kg it is a compressor workhorse, not a quiet bedroom mini.

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Built for 230 V and EU plugs. In the UK, use with a fused travel adapter; in the US, the device will not run on the 120 V mains.

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Klarstein DryFy 20L

⌗ Available variants

Klarstein DryFy 20L at a glance

In short: the Klarstein DryFy 20L scores 8,1/10 in our dehumidifier review (from €201). Biggest strength: highest output (20 L/day). Main compromise: not a quiet bedroom unit.

All specifications come from manufacturer data sheets and the Amazon catalogue and were cross-checked before publication. The rating is an editorial overall assessment based on this data; we do not trial products ourselves.

Klarstein DryFy 20L: what works, what doesn't?

What works well

  • Highest output (20 L/day): draws water fastest in acutely damp rooms
  • Largest tank (5 L): much less frequent emptying than with 1.8 to 3 L devices
  • Fully equipped: humidistat, timer, auto-restart, auto swing, laundry mode
  • Auto-restart after a power cut: starts up again by itself in the cellar after a mains interruption

Points of criticism

  • Not a quiet bedroom unit: 46 dB of compressor operation is audible at night
  • Heavy & large at 15 kg: not a mini, better placed stationary
  • Highest price in the comparison: around €201, the output costs

Specifications in detail

TechnologyCompressor
Dehumidificationup to 20 L/day
Room sizeup to 22 m² (manufacturer's figure)
Tank capacity5 L (largest in the comparison)
Noise level46 dB
Power400 W
Humidistat30 to 80 % adjustable
Comfort24 h timer · auto-restart · auto swing · drying & laundry mode
Dimensions / weight24 × 35 × 51 cm · 15 kg

What does it cost to run?

With a maximum 400 W power consumption, one hour of operation at 35 ct/kWh (German electricity price) costs about 14 cents. Eight hours of continuous running (e.g. overnight) therefore cost about €1.12.

Calculation basis: 35 ct/kWh (German electricity price, 2026, rounded). Values from the manufacturer data sheet; actual costs depend on use and tariff.

Build quality & everyday use

What carries the Klarstein DryFy 20L in everyday use: Highest output (20 L/day) (draws water fastest in acutely damp rooms) and Largest tank (5 L) (much less frequent emptying than with 1.8 to 3 L devices). We have to be honest about the weaknesses: not a quiet bedroom unit, as 46 dB of compressor operation is audible at night.

If you set the device up to save space, allow ventilation clearance of at least 5 cm at the sides and 10 cm at the rear, otherwise the compressor may overheat.

“Klarstein DryFy 20L: highest output (20 L/day) and the largest tank (5 L), and the trade-off is not being a quiet bedroom unit. At 8.1/10 a fair deal from €201.”
The MiniHaushalt.de editorial team

Who is the Klarstein DryFy 20L suited to? (buying advice)

Perfect for:

  • ✓Acutely damp rooms & after water damage
  • ✓Anyone who wants to empty rarely (5 L tank)
  • ✓Living areas, cellars & laundry rooms

Less suitable for:

  • ✕Bedroom (46 dB)
  • ✕Tight budget
  • ✕Anyone looking for a light mini device

Klarstein DryFy 20L compared with alternatives

Head-to-head with the top alternatives from our dehumidifiers comparison

Feature Klarstein DryFy 20L Pro Breeze 12L Comfee MDDF-16DEN7-WF
Dehumidification20 L/day12 L/day16 L/day
Room sizeup to 22 m²up to 20 m²up to 32 m²
Tank5 L1.8 L3 L
Noise level46 dB38 dBabout 45 dB
TechnologyCompressorCompressorCompressor + app

Similar dehumidifier models

Frequently asked questions about the Klarstein DryFy 20L

Which dehumidifier has the largest tank?
In the comparison it is the Klarstein DryFy 20L with 5 litres, against 1.8 L (Pro Breeze) to 3 L (Comfee, TROTEC). The large tank means you have to empty much less often in pure tank operation. For genuine continuous operation, the drain hose is still recommended.
How fast does the Klarstein DryFy 20L dehumidify?
With up to 20 L/day it has the highest output in the comparison and lowers the humidity fastest in acutely damp rooms. That is mainly useful after water damage, in the laundry room or with heavily misted windows.
Is the Klarstein DryFy 20L suitable for the bedroom?
Only to a limited extent: at 46 dB it is a compressor unit and audible at night. For the bedroom, the Pro Breeze 12L (38 dB sleep mode) or a quiet Peltier mini is the better choice. The DryFy plays to its strengths in living areas, cellars and laundry rooms.
Does the DryFy keep running by itself after a power cut?
Yes, thanks to the auto-restart function it starts automatically with the last settings after a mains interruption, which is handy when it stands unattended in the cellar and you do not want to restart it every time.
8.1 / 10 · ★ Power · 20 L

Verdict: is the Klarstein DryFy 20L worth it?

A solid option with a clear profile: if you can live with not being a quiet bedroom unit, from €201 you get mainly one thing: highest output (20 L/day). It suits best: acutely damp rooms & after water damage.

If you want to compare alternatives, you will find detailed data and reviews on our dehumidifiers comparison page.

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Klarstein DryFy 20L
On Amazon.co.uk