A compressor dehumidifier from Bosch rated at 16 litres removed per 24 hours for rooms up to 33 m², with a half-transparent 2.5 L tank, three automated modes (Auto, Night, Laundry) called 'Easy Dry Select,' a stated 38 dB noise level, an integrated handle and castors. Bosch does not publish WiFi or app control for this model.
The bottom line The premium pick of this comparison on brand and finish rather than on extraction rate — 16 L/24h is the lowest of the three compressor units here, and mode-based control trades numeric precision for simplicity.
A recognised brand, not the highest extraction rate
Bosch rates the Dry 4000 at 16 litres removed per 24 hours for rooms up to 33 m² — the largest stated room coverage in this comparison, but, at 16 L/24h, a lower extraction rate than the 20 L Pro Breeze unit also covered here. What Bosch offers instead is brand recognition and finish: as with every figure in this family, the manufacturer doesn’t publish the reference temperature and humidity behind the 16 L number, so it can’t be directly weighed against Pro Breeze’s figure with certainty.
Control by mode, not by percentage
Rather than a numeric humidity target, the Dry 4000 is controlled through three presets Bosch calls “Easy Dry Select”: Auto, Night and Laundry. The manufacturer states that power is continuously monitored and adjusted to ambient humidity within each mode, but no percentage range is published for any of them — a genuine difference from the COMFEE’ and Pro Breeze units in this comparison, both of which state an adjustable target between roughly 30% and 85%. Whether that trade-off matters depends on whether a buyer wants to set a number or simply pick a mode and leave it.
Tank and what isn’t included
The tank holds 2.5 L and is described as half-transparent with a spill-resistant design for easy emptying, alongside an integrated carry handle and castors for moving it between rooms. There’s no mention anywhere in Bosch’s listing of a continuous-drain hose option — a contrast with the Pro Breeze unit, which states one is included in the box. That makes the Dry 4000 better suited to a space where someone can empty a tank periodically than to a basement meant to run unattended for days.
Noise and price, checked on four markets
Bosch states a 38 dB noise level — two decibels above the 36 dB figure published by both the COMFEE’ and Pro Breeze units in this comparison, and the noisiest of the three compressor units checked here. We verified the ASIN B0DLL2P9ZQ on Amazon.de, Amazon.fr, Amazon.it and Amazon.es; on all four it had a valid New price and an active sales rank, though not shown as sold directly by Amazon at the time of checking. Prices ranged from about €224 on Amazon.fr to about €239 on Amazon.es — notably, the current price matched the list price almost exactly on every market, unlike the steep discounts shown on some of the other units in this comparison.
Who this actually suits
This is the pick for someone who trusts a recognised appliance brand and prefers switching between named modes over setting a percentage, and who doesn’t need WiFi control or a continuous-drain hose. Anyone prioritising the highest litres-per-day figure, app control, or laundry-drying via a numeric target should look at the Pro Breeze unit instead, which outperforms it on paper for a broadly similar price.
Prices quoted in this text were read on 2026-08-24. The live price is at the top of the page.
Where this one sits in its aisle
At 224 €, it is the 4 cheapest of the 4 models in this category published here.
Cheapest in the aisle37 €
Median200 €
Dearest in the aisle224 €
What we like, and what we don't
Strengths
16 L/24h from a widely recognised appliance brand, with a stated coverage of up to 33 m²
Three automated modes (Auto, Night, Laundry) adjust output without a numeric dial to set
Half-transparent 2.5 L tank with a stated spill-resistant design, integrated handle and castors
List price and current price matched almost exactly on all four markets we checked — no inflated reference price to discount from
Compromises
No WiFi or app control mentioned in Bosch's own listing, unlike the Pro Breeze unit in this comparison
No continuous-drain hose option is described anywhere in the listing — only tank drainage
At 38 dB it's the noisiest of the three compressor units in this comparison, above COMFEE's and Pro Breeze's stated 36 dB
16 L/24h is the lowest extraction rate of the three compressor units checked here, despite being the highest-priced
Specifications
Rated extraction
16 L / 24h
Room coverage
Up to 33 m² (Bosch's figure)
Tank capacity
2.5 L, half-transparent
Operating modes
Auto, Night, Laundry (Easy Dry Select)
Noise level
38 dB (Bosch's figure)
Amazon reference
B0DLL2P9ZQ (EAN 4069143047774, identical on 4 markets)
Questions people actually ask
What do the Auto, Night and Laundry modes actually change?
Bosch describes them only as automated presets — the unit's own copy states that power is continuously monitored and regulated according to ambient humidity in each mode. It does not publish a numeric humidity target for any of the three, unlike the COMFEE' and Pro Breeze units elsewhere in this comparison, which both state adjustable percentage ranges.
Can the Dry 4000 run unattended for long periods?
Bosch's listing describes only the 2.5 L tank and its spill-resistant design; there's no mention of a continuous-drain hose fitting on any of the four markets we checked. Unattended runtime is limited by how often the tank needs emptying, not by a drain connection.
Is Bosch's 16 L/24h figure directly comparable to Pro Breeze's 20 L/24h figure?
Both are the manufacturer's own stated maximum, and neither publishes the reference temperature and humidity the figure was measured at, so a direct comparison assumes both were tested under similarly favourable conditions — which isn't confirmed by either brand.
Our score
8.3/ 10
The premium pick of this comparison on brand and finish rather than on extraction rate — 16 L/24h is the lowest of the three compressor units here, and mode-based control trades numeric precision for simplicity.
Who this one is for
Buyers who want a known appliance brand and simple mode-based control rather than a numeric humidity dial, and who don't need app control or continuous drainage.
Compared with its closest rivals
Same category, nearest prices. Only the specifications every one of them states are shown — a half-empty column compares nothing.
Model
Price
Rated extraction
Tank capacity
Amazon reference
Bosch Dry 4000
224 €
16 L / 24h
2.5 L, half-transparent
B0DLL2P9ZQ (EAN 4069143047774, identical on 4 markets)
A compact, low-power dehumidifier rated by Cecotec at 300 ml of water removed per 24 hours, for rooms up to 20 m². A removable 0.6 L tank, automatic shutoff when full, a carry handle and a minimum stated consumption of 23 W make it a light standby unit rather than a room-by-room appliance.
Best for: A single small room, a wardrobe, a caravan or a car — somewhere a cheap standby unit against light condensation is enough, not a damp cellar or a family bathroom.
A compressor dehumidifier rated by COMFEE' at 10 litres removed per 24 hours, with a 2.5 L tank, an adjustable target humidity between 35% and 85%, a stated 36 dB noise level, child lock and castors. COMFEE' uses R290 refrigerant and lists it for rooms of roughly 16-31 m² depending on the market.
Best for: A bedroom, small basement or laundry room where a numeric humidity target and quiet overnight running matter more than the largest possible litres-per-day figure.
A compressor dehumidifier rated by Pro Breeze at 20 litres removed per 24 hours, with a 4 L tank, an included continuous-drain hose, WiFi app and Alexa/Google Home control, a dedicated laundry-drying mode, and an adjustable target humidity between 30% and 80%. Pro Breeze states a 36 dB noise level and lists it for rooms up to 30 m².
Best for: A damp basement or utility room, or anyone who wants to dry laundry indoors and check on humidity from a phone rather than walking over to the unit.
