Select and compare
BWT COSMY 200 vs. Dolphin Nautilus EON 100 compared
Robotic Pool Cleaner
At a glance
The key numbers for both devices side by side.
Overall rating
7777Gut
8181Gut
Value for money
76Fair
76Fair
Best price
€549.00
€899.00
Price advantage
€350.00 cheaper
—
Offers
1 shop
1 shop
Rank in category
Rank 19 of 45
Rank 17 of 45
Rating
Sub-ratings compared
BWT COSMY 200Overall rating 77Dolphin Nautilus EON 100Overall rating 81
BWT COSMY 200Dolphin Nautilus EON 100
Cleaning results80/10084/100
Navigation & reliability72/10076/100
Runtime & endurance76/10090/100
Handling & maintenance80/10066/100
App & build quality66/10078/100
Cleaning results
80
84
Navigation & reliability
72
76
Runtime & endurance
76
90
Handling & maintenance
80
66
App & build quality
66
78
Specs
Specs compared
Key specs
Brand
Model
COSMY 200
Nautilus EON 100
Cleaning coverageAreas the robot cleans according to the manufacturer – only with walls and waterline is no dirt ring left; top models also skim leaves from the surface, pure skimmers clean only the surface
FloorWallsWaterline
FloorWallsWaterline
Power supplyBattery or floating cable according to the manufacturer – battery robots don’t get tangled, corded robots run without a break
Cable
Battery (cordless)
Suitable forPool types the manufacturer approves the robot for
In-ground pool
Above-ground poolIn-ground pool
NavigationHow the robot moves according to the manufacturer – systematic navigation and mapping cover the pool faster and more completely
Systematic (gyroscope)
Systematic (gyroscope)
Battery lifeRuntime per charge in the standard program according to the manufacturer in minutes
180 min
Cleaning
ChassisHow the robot moves according to the manufacturer – tracks climb walls and steps and roll over liner folds, wheels and rollers get stuck on edges more easily; propellers drive floating skimmers
Tracks (rubber)
Tracks (rubber)
Brush typeType of main brushes according to the manufacturer – PVC, nylon and plastic brushes count as bristles, PVA is the absorbent foam roller that also grips smooth tiles; a "combined brush" usually means bristles plus PVA
Bristles
Saltwater compatibleThe manufacturer explicitly approves the robot for saltwater pools – if not stated, the field stays empty
Yes
Yes
Flow rateVolume of water the pump draws through the filter per hour according to the manufacturer, in m³/h – a higher flow rate also picks up heavy debris
15 m³/h
15 m³/h
Cleaning programsCleaning programmes according to the manufacturer – "Smart", "Auto" or "Standard" is the full clean of floor and walls, "Quick" or "Turbo" the quick programme, "Enhanced" or "Ultra" the intensive programme; a quick programme is enough for the daily round
Floor onlyFloor and walls
Floor and wallsFloor onlyWaterlineIntensive programme
Suitable pool surfacesPool surfaces the manufacturer approves the robot for – "pebble" and pebble plaster count as concrete, "vinyl" and "liner" as liner, fibreglass and GRP as polyester
ConcreteTilesVinyl linerPolyester
Vinyl linerConcreteStainless steelTilesMosaic tilePolyester
Program durationDuration of the standard program according to the manufacturer in minutes
90 min
120 min
Filter & maintenance
Filter typeType of debris container according to the manufacturer
Filter basket
Filter basket
Full filter indicatorSignals a full filter on the robot or in the app, according to the manufacturer
Yes
Yes
Filter finenessFineness of the finest included filter according to the manufacturer in microns – the smaller the number, the finer the filter, but it clogs faster
150 µm
70 µm
Battery & cable
Charging timeCharging time from empty to full according to the manufacturer in minutes
270 min
ChargingHow the battery is charged according to the manufacturer – with a plug on the device the socket must be dry; a dock sometimes also rinses the filter but then needs a water connection
Charging cable on the device
Cable lengthLength of the floating cable according to the manufacturer in m – it must reach from the power adapter to the farthest corner
16 m (52 ft)
Anti-twist systemA swivel in the cable prevents the floating cable from twisting, according to the manufacturer
Yes
No
Controls
Remote controlA remote control is included, according to the manufacturer
No
ScheduleCleaning can be repeated on a schedule, according to the manufacturer
Yes
Yes
App controlCan be controlled via app, not just by remote, according to the manufacturer
Yes
Yes
RetrievalHow the robot is ready for removal after cleaning according to the manufacturer – without a retrieval aid it stays on the bottom and has to be fished out with a hook
No retrieval aid (hook needed)
Parks at the pool edge
Dimensions & weight
WeightWeight of the robot according to the manufacturer in kg, without water and without the cart – matters when lifting it out
5.7 kg (13 lb)
10 kg (22 lb)
Water depth up toMaximum water depth the manufacturer approves the robot for, in m
3 m (9.8 ft)
Pool length up toMaximum pool length the manufacturer approves the robot for, in m
10 m (33 ft)
15 m (49 ft)
Transport cart includedA cart for storing and moving the robot is included, according to the manufacturer
No
No
DimensionsExternal dimensions according to the manufacturer in cm (W × D × H)
36.5 × 39.5 × 20 cm (14 × 16 × 7.9 in)
41.1 × 44.9 × 28.3 cm (16 × 18 × 11 in)
General
Warranty
2 years
2 years
Price segment
Premium
Model year
2024
In the box
Poolroboter, Netzteil, Schwimmkabel; Transportwagen optional
Poolroboter, Ladegerät, Monoblock-Filterkorb, Greifhaken (Clicker optional)
Prices
Offers
Verdict
Pros & cons
Der BWT COSMY 200 ist ein leichter Kabelroboter für Einbaubecken bis 10 m, der Boden, Wände und Wasserlinie gründlich und in geordneten Bahnen reinigt. Mit 5,7 kg und Schnellablauf hebst du ihn ohne Kraftakt aus dem Becken. Der Haken: Der Filterkorb hält erst Schmutz ab 150 µm zurück, ein Feinfilter ist nicht erhältlich, Pollen und Staub bleiben der Filteranlage überlassen.
Pros
- Schrubbt an der Wasserlinie, statt nur kurz anzustoßen
- Fährt per Gyroskop geordnete Bahnen, auch Ecken und Nischen
- Mit 5,7 kg leicht, Schnellablauf lässt beim Anheben Wasser ab
- Filterkorb per Knopfdruck von oben entnehmbar, mit Voll-Anzeige
- Intervall-Zeitplan alle 48, 72 oder 96 h über die App
- Ersatzteile wie Ketten, Bürsten und Kabel einzeln lieferbar
Cons
- Filter hält nur Schmutz ab 150 µm, kein Feinfilter erhältlich
- App nur per Bluetooth in Reichweite des Netzteils
- Kein Zeitplan mit festen Wochentagen, nur Intervall
- Stufen und Treppen schafft er nicht verlässlich
- Bleibt nach dem Lauf am Boden, in tiefen Becken Haken nötig
Der Dolphin Nautilus EON 100 ist ein kabelloser Raupen-Roboter, der Boden, Wände, Wasserlinie und sogar Stufen und Sonnenbänke ab 20 cm reinigt und sich dabei nie festfährt. Er fährt allerdings ohne erkennbares Muster und erkennt keinen Schmutz. Der Haken liegt beim Bergen: Ohne zugekauften Clicker wartet er am Boden, und der 70-µm-Filter lässt Feinstaub durch.
Pros
- Reinigt Stufen, Sicherheitsstufe und Sonnenbänke ab 20 cm Wassertiefe
- Fuhr sich im Test kein einziges Mal fest, auch nicht in Ecken
- Schrubbt die Wasserlinie lange mit aktiven Bürsten, statt nur anzustoßen
- Akku hielt mit drei Viertel Ladung 2 h 49 min durch
- Korb hält Laub, Insekten und sogar Hundehaare zurück
- Filter-voll-Anzeige per LED und App
Cons
- Ohne extra bezahlten Clicker bleibt er zum Bergen am Boden
- 70-µm-Filter lässt feinen Schwebstaub durch, Feinfilter nicht beigelegt
- Kommt mit römischen Treppen und 45°-Schrägen nicht zurecht
- Fährt kreuz und quer, langsam und ohne Schmutzerkennung
- Stufen fährt er nur einmal ab, statt sie gründlich zu schrubben
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