Skip to content

Select and compare

Our pick
Waterdrop C1SL
79
Waterdrop C1SL
€229.00€259.00

Waterdrop A2G vs. Waterdrop C1SL compared

Reverse Osmosis System

At a glance

The key numbers for both devices side by side.

Overall rating
75Gut
79Gut
Value for money
68Fair
88Excellent
Best price
€449.00€499.00−10 %
€229.00€259.00−12 %
Price advantage
—
€220.00 cheaper
Offers
2 shops
1 shop
Rank in category
Rank 7 of 15
Rank 4 of 15

Rating

Sub-ratings compared

Waterdrop A2GOverall rating 75Waterdrop C1SLOverall rating 79
FiltrationperformanceFlowrate & wastewaterInstallationRunningcosts & maintenanceBuildquality & ease of use
Waterdrop A2GWaterdrop C1SL
Filtration performance75/10083/100
Flow rate & wastewater75/10069/100
Installation89/10087/100
Running costs & maintenance73/10085/100
Build quality & ease of use60/10066/100
Filtration performance
75
83
Flow rate & wastewater
75
69
Installation
89
87
Running costs & maintenance
73
85
Build quality & ease of use
60
66

Specs

Specs compared

Key specs

Model
A2G
C1SL
TypeInstallation type according to the manufacturer – under-sink systems connect to the water line under the sink, countertop units sit on the worktop and are filled by hand
Countertop (no installation)
Countertop (no installation)
Flow ratePure water flow rate according to the manufacturer in liters per minute – 400 GPD (gallons per day) equals about 1.05 liters per minute
0.26 l/min
0.2 l/min
Pure-to-waste ratioRatio of pure water to wastewater according to the manufacturer – at 3:1, one liter goes down the drain for every three liters of drinking water; higher is more economical; if there is more wastewater than pure water, enter a decimal, so 1:3 as 0.33
3 :1
3 :1
TankWhether, according to the manufacturer, the unit stores filtered water in a storage tank or filters on demand – the refill tank of a countertop unit does not count here
With storage tank
With storage tank
RemineralizationAccording to the manufacturer, adds minerals such as calcium and magnesium back to the filtered water
Yes
Yes

Filter & maintenance

Filter stagesNumber of filter stages according to the manufacturer, including the membrane
6 levels
7 levels
CertificationStandards the unit is certified to according to the manufacturer – only actual certifications, not “tested to the standard”; NSF/ANSI 58 only if the whole system is certified, “certified elements” or “components” do not count
NSF/ANSI 372 (low lead)
Pre-filter replacementRecommended pre-filter replacement interval according to the manufacturer in months
12 months
Membrane replacementRecommended replacement interval of the reverse osmosis membrane according to the manufacturer in months
12 months
12 months
Filter costCost of replacement filters per year based on the manufacturer’s replacement intervals, in euros
79.99 €/year
69 €/year
Tool-free filter changeAccording to the manufacturer, filters can be changed without tools
Yes
Yes
Filter change indicatorAccording to the manufacturer, the unit shows the filter status or when a change is due
Yes
Yes
TDS displayAccording to the manufacturer, displays the water’s TDS value, i.e. the amount of dissolved solids
No
UV sterilizationAccording to the manufacturer, a UV lamp additionally disinfects the water
Yes
Alkaline waterA mineral filter raises the water’s pH according to the manufacturer (alkaline mineralization)
Yes
Yes

Hot water & cooling

Hot waterAccording to the manufacturer, the unit dispenses hot water, e.g. for tea
Yes
No
Max. water temperatureMaximum dispensing temperature according to the manufacturer in °C
95 °C (203 °F)
Heat settingsNumber of selectable dispensing temperatures according to the manufacturer, room temperature included – not the volume settings
6 levels
1 levels
Child lockAccording to the manufacturer, hot water can only be dispensed after unlocking, e.g. via a key lock or a second press
Yes
Chilled waterAccording to the manufacturer, the unit chills the water before dispensing
Yes
No
Power consumption when heatingMaximum power consumption according to the manufacturer in watts, when dispensing hot water – not the power while filtering
1,530 W
Standby powerPower consumption in standby mode according to the manufacturer in watts
9 W

Connection & controls

DispensingDispensing point included, according to the manufacturer
None (countertop unit)
None (countertop unit)
Power connection requiredAccording to the manufacturer, the unit needs a power connection, e.g. for the pump – tankless systems usually have a built-in pump
Yes
Yes
Tank capacityStorage tank volume according to the manufacturer in liters
1 liters (0.26 gal)
0.95 liters (0.25 gal)
Refill tankCapacity of the raw water tank according to the manufacturer in liters – determines how often you refill
4.7 liters (1.2 gal)
5 liters (1.3 gal)

Dimensions & weight

WidthWidth of the unit according to the manufacturer in cm
20.8 cm (8.2 in)
29.72 cm (12 in)
DepthDepth of the unit according to the manufacturer in cm – matters for the space under the sink
40.4 cm (16 in)
21.08 cm (8.3 in)
HeightHeight of the unit according to the manufacturer in cm
39.9 cm (16 in)
34.8 cm (14 in)
WeightWeight without water according to the manufacturer in kg
10 kg (22 lb)
6.2 kg (14 lb)

General

Warranty
1 years
1 years
In the box
Gerät, Filter, Karaffe, Bedienungsanleitung
Gerät, C1RFG-Filter, Wassertank, Bedienungsanleitung

Prices

Offers

Waterdrop A2G

Waterdrop C1SL

Ad · Links marked with * are affiliate links: if you buy through them, we earn a commission – at no extra cost to you.

Verdict

Pros & cons

Die Waterdrop A2G ist eine Auftisch-Osmoseanlage, die ohne Installation heißes und gekühltes Wasser liefert, von 15 bis 95 °C. Sie passt zu ein bis zwei Personen in der Mietwohnung, die täglich Tee oder Kaffee kochen. Die Filterkartusche wechselst du einmal im Jahr ohne Werkzeug. Dafür nimmst du einen gut hörbaren Kompressor in Kauf, und der 4,7-l-Tank muss täglich nachgefüllt werden.

Pros

  • Heiß- und Kaltwasser von 15 bis 95 °C in sechs Stufen, ohne Installation
  • Sparsames Verhältnis von 3:1 Reinwasser zu Abwasser
  • Kartusche hält 12 Monate und wird ohne Werkzeug gewechselt
  • Mineralisierung macht das Wasser milder, gut für Tee und Kaffee
  • Kindersicherung per Entsperrtaste für heißes Wasser
  • UV-Entkeimung, Tank und Karaffe leicht herausnehmbar

Cons

  • Kompressor brummt hörbar und springt immer wieder an
  • Tank mit 4,7 l reicht einer Person nur etwa einen Tag
  • Karaffe und Tank tropfen beim Herausnehmen auf die Arbeitsplatte
  • Erster Schwall Heißwasser kommt lauwarm, Kühlung lässt nach 250 ml nach
  • Keine TDS-Anzeige, herstellereigene Kartusche statt Standardfilter

Die Waterdrop C1SL ist eine ordentliche Einstiegs-Osmoseanlage für die Arbeitsplatte: ohne Installation, mit Mineralstufe und einer Kartusche, die 12 Monate oder rund 4.160 l hält. Das Wasser schmeckt neutral, Chlorgeruch und Kalk im Wasserkocher verschwinden. Für ein bis zwei Personen passt sie gut. Der Haken: Es gibt nur Raumtemperatur und der Rohwassertank hinten muss ständig heraus.

Pros

  • Läuft ohne Installation, braucht nur Steckdose und 29,7 x 21,1 cm Stellfläche
  • Eine Kartusche hält 12 Monate oder rund 4.160 l
  • Sparsames Verhältnis von 3:1 Reinwasser zu Abwasser
  • Wasser schmeckt neutral, Chlorgeruch verschwindet, Wasserkocher bleibt kalkfrei
  • Werkzeugloser Filterwechsel mit Wechselanzeige
  • Pumpe filtert leise genug für die offene Wohnküche

Cons

  • Rohwassertank sitzt hinten und muss zum Füllen jedes Mal heraus
  • Kein heißes oder gekühltes Wasser, nur Raumtemperatur
  • Nur 0,95 l Reinwasser, ab drei Personen mehrmals täglich nachfüllen
  • Konzentrat fließt zurück in den Rohwassertank, Rest muss ausgeleert werden
  • Kein Systemzertifikat nach NSF/ANSI 58 für die Filterleistung

Spotted an error?

Wrong price, wrong spec or a dead link – let us know and we will fix it quickly.

Report an error

Similar comparisons

Waterdrop A2GWaterdrop A2G75
iSpring RCD100HCG UmkehrosmoseanlageiSpring RCD100HCG Umkehrosmoseanlage75
View comparison
Waterdrop A2GWaterdrop A2G75
iSpring RCC7AKUV UmkehrosmoseiSpring RCC7AKUV Umkehrosmose74
View comparison
Waterdrop A2GWaterdrop A2G75
Waterdrop K19-HGWaterdrop K19-HG77
View comparison
Waterdrop A2GWaterdrop A2G75
HO3 Home One OsmoseanlageHO3 Home One Osmoseanlage73
View comparison