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Best 5 L Wasserboiler - Holiday Sale

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Last Updated - 18.12.2025

Best Choice

01

Vaillant

Vaillant 005122 Hot Water VEK 5L 2.4 KW / 230 V with Summton, White/Light Grey

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9.9

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With buzzing tone – the buzzing tone is practical when the boiling temperature is reached and the interval steam cooking: the water heater turns on again when the water cools down
This appliance is intended for the preparation of hot drinks and/or food only
Practical helper – the hot water device brings up to 5 litres of water to any temperature between 30 and 100 °C in no time: so a separate kettle is unnecessary
High safety – the electric hot water tank offers high safety thanks to the temperature limiter and switches off as soon as the desired temperature is reached
Box contents: Vaillant VEK 5 L electric boiling water device wall-hung (white/grey), with power cable, low height thanks to integrated fitting, dimensions: 345 cm x 265 cm x 165 cm.
Boiling water – the proven Vaillant VEK 5 L is ideal for anyone who needs not only warm, but also hot or boiling water directly at the tap point

199,00 €
02

Stiebel Eltron

Latest generation: Stiebel Eltron small storage tank SNU 5 Plus, very compact, anti-drop, thermostop function, under-sink boiler 5 litres, low pressure with plug, 2 kW, 204972

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Space-saving miracle: for more space under the kitchen sink
Safety: integrated anti-scald protection; 4-stage temperature limitation
Fitting + installation: low-pressure tap required – use of a pressure tap not allowed; only vertical under sink mounting; ready for plug: 230 V; easy wall mounting thanks to universal mounting strip; easy replacement of previous models
Energy-saving miracle: the most compact of its kind with the lowest power consumption; the energy-saving thermostop function prevents the tap from heating up
Country approval: Germany, Austria, Czech Republic
Comfort features: continuous temperature setting via high-quality rotary selector with tactile detent
Box contents: Stiebel Eltron small storage unit SNU 5 Plus, operating and installation instructions, wall hanging
Areas of use: pressureless boiler for the sink in the bathroom or the sink in the kitchen

155,55 €
03

AEG

AEG Boiler BOI 5 U, Under-Sink Boiler 5 Litres Low Pressure with Plug 230 V for Kitchen Sink and Wax Basin, 2 kW, Made in Germany, 204616

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9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Safety and quality: child lock thanks to adjustable temperature limit/scald protection; tested safety by VDE testing institute, frost protection, made in Germany
Installation: easy installation, with plug (socket and cold water connection sufficient), under-sink mounting
Energy-saving functions: high quality thermal insulation, low standby consumption, energy efficiency class A
Comfortable operation: selectable desired temperature, infinitely adjustable from 35 to 85 °C
Box contents: a AEG small storage, operating and installation instructions (English language not guaranteed), wall hanging
Areas of use: open boiler 5 l under-sink for a water point in the kitchen and bathroom; Warning: use only with low pressure/pressureless tap – recognizable on the 3 connection hoses – hose shower fitting is only to be used with kink protection

69,90 €
04

AEG

AEG Electric Water Heaters with Small Storage Tank, white, 222162

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9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Safe: tested safety by VDE testing institute, frost protection position
Please note: use only with low pressure/pressureless fittings, recognizable on the 3 connection hoses, do not use a hose shower fitting
Made in Germany
High hot water comfort for a water point: immediately hot water in the kitchen and bathroom
Economical and efficient: high-quality thermal insulation, low standby consumption, energy saving setting, energy efficiency class A
Easy temperature selection: stepless from 35-85°C, temperature selection limitation possible to 45/55/65°C
Easy installation: ready to plug, under-sink mounting

74,99 €
Value for Money

05

Thermoflow

Thermoflow top/under-sink storage

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Mounting: the hot water boiler with G 1/2 inch connection can be mounted on a wall. With a dimensions of 42 (H) x 27 (W) x 18 (D) cm, the 5 litre small storage tank can be mounted
Hot water storage: the electric hot water tank, with automatic frost protection, has a storage volume of 5 litres and is suitable as a hot water boiler for overtable installations
Energy-saving: thanks to the energy-saving mode and energy efficiency class A, the Thermoflow OT5 top table boiler allows efficient water heating with an annual power consumption of 490 kWh
Box contents: the Thermoflow OT5 low pressure boiler comes ready for plug, including instruction manual (English language not guaranteed). A low-pressure fitting is mandatory for commissioning the small reservoir
Areas of use: with a heating time of 10 minutes. From 10 °C to 65 °C, the overtable boiler ensures pleasantly tempered water and is suitable as a small boiler in the kitchen or bathroom

59,99 €
06

Thermoflow

Thermoflow top/under-sink storage

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9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Mounting: the hot water boiler with G 3/8 inch connection can be mounted on a wall. With a dimensions of 42 (H) x 27 (W) x 18 (D) cm, the 5 litre small storage tank can be mounted
Hot water storage: the ready-to-plug electric hot water tank, with automatic frost protection, has a storage volume of 5 litres and can be mounted as a hot water under sink device
Energy-saving: thanks to the energy-saving mode and energy efficiency class A, the Thermoflow UT5 under-sink boiler allows efficient water heating with an annual power consumption of 490 kWh
Box contents: the Thermoflow UT5 low pressure boiler comes ready for plug, including instruction manual (English language not guaranteed). A low-pressure fitting is mandatory for commissioning the small reservoir
Areas of use: with a heating time of 10 minutes. From 10 °C to 65 °C, the 5 litre under-sink unit ensures pleasantly tempered water and is suitable as a boiler in the kitchen or bathroom

45,82 €
07

Vaillant

Vaillant 10021140 Electric Hot Water Tank VEN 5/7-5 U plus

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9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Scald protection can be activated.
No need to change the wall mounting rail.
Low pressure under-table wall storage.
Frost protection.
Adjustable thermostat from 7°C to 85°C.

90,53 €
08

Stiebel Eltron

Newest generation Stiebel Eltron boiler UFP 5 Trend with thermostop function, very compact, under-sink boiler 5 litres low pressure, with plug 230 V, 2 kW, made in Germany, 204966

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8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

Space-saving miracle: for more space under the kitchen sink
Safety: integrated anti-scald protection; 4-stage temperature limitation
Fitting + installation: low-pressure tap required – use of a pressure tap not allowed; only vertical under sink mounting; ready for plug: 230 V; easy wall mounting thanks to universal mounting strip; easy replacement of previous models
Energy-saving: the most compact of its kind with the lowest power consumption; the energy-saving thermostop function prevents unwanted heating of the fitting
Country approval: Germany, Austria, Poland
Comfort features: continuous temperature setting via high-quality rotary selector with tactile detent
Box contents: Stiebel Eltron small storage tank UFP 5 Trend, operating and installation instructions, wall hanging
Areas of use: pressureless boiler for the sink in the bathroom or the sink in the kitchen

103,70 €
09

Thermoflow

Thermoflow DS 5U Under-Sink Storage / Low Pressure Storage / Hot Water Boiler 5 L Storage Volume / G 1/2 Inch Connection / 30-65 °C / Suitable for Low Pressure Fittings / with Metal Tank / Energy

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Mounting: The hot water boiler with G 1/2 inch connection can be mounted on a wall. With a dimension of 32.8 (H) x 23.4 (W) x 22.7 (D) cm, the 5 litre small storage tank can be installed to save space. Suitable for low pressure fittings. The metal tank also allows for pressure-resistant installation.
Hot water storage: the ready-to-plug electric hot water tank has a storage volume of 5 litres and can be mounted as a hot water undersink device. The integrated metal tank ensures high durability and stability.
Energy-saving: thanks to the energy-saving mode and energy efficiency class B, the Thermoflow DS 5U under-sink boiler allows efficient water heating with an annual power consumption of 563.4 kWh
Box contents: the Thermoflow DS 5U boiler comes ready to plug in with instruction manual. Before starting up the small tank, the device must be filled with cold water.
Areas of use: with a heating time of 14 minutes. from 10 °C to 65 °C, the 5-litre under-sink unit ensures pleasantly tempered water and is suitable as a boiler in the kitchen or sink. Suitable for low pressure fittings - ideal for single dispensing points.

95,75 €
10

Ecoggeder

Water Heater, Tankless Instantaneous Water Heater, 5 L Water Boiler, 5000 W, Under-Sink Boiler, Electric Compact Hot Water Tank, Under-Sink Mounting, 30-55°C with Remote Control for Kitchen, Toilets

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

【Thoughtful Function】The memory function allows the instantaneous water heater to maintain the last set temperature, even if it is turned off and restarted after the temperature setting.
【High Safety】: The tankless water heater has leakage protection, dry fire protection, over-temperature protection, automatic shut-off function, water protection grade of IPX 4 and self-test function when switched on.
Intelligent constant temperature: the internal intelligent chip quickly adjusts the heating power required for bathing to the inlet and outlet temperature as well as the water flow. The accurate temperature control of ± 32.9 °F frees you from sudden temperature fluctuations.
Fast heating: The tankless design and strong power (5000W) ensure that the water is heated in 30 seconds without having to wait too long, and ensure a large water production (up to 26.42gal/H).
Economical and energy saving: the electric water heater has a variable frequency design, which can automatically adjust the power consumption to the flow and temperature settings.

54,00 €