Model: Viessmann Vitowell Comfort Classic (Slim) 20L Storage Water Heater

Type: Storage Water Heater

Material: ABS material

Colour: White

Dimensions: 630mm x 279mm

Capacity: 20L

Warranty (T&C’s Apply): All Internal components are covered for Two (2) years. Tank leakage – Five (5) years.

*Please note Viessmann shall only offer a one-time replacement in the event of tank leakage within the 5-year period. For any tank leakage after the first year, labour and service charges shall apply for the replacement.

Expert Installation With PUB Submission – Quality workmanship to ensure that all works comply with standards prescribed / stipulated by PUB. Warranty may be voided without PUB submission.

Installation Prices – Installation is done below false ceiling & above false ceiling. Price may vary depending on Job Scope Size & Complexity – WhatsApp us to enquire today!

Delivery Fees – For delivery of water heater only (installation not required), there will be a delivery fee of $50 will be charged.

Categories: , Product ID: 21621



Viessman Vitowell Comfort Classic (Slim) 20L Storage Water Heater

The VITOWELL comfort Classic line adopts the exclusive Ceratech Technology enamel coating formula for extended durability of water tanks with enhanced acid corrosion resistance, alkaline resistance, temperature and pressure resistance. The electronic ELCB and water-resistant casing material provides maximum safety.





Stepless Temperature Adjustment

For High Comfort

Splash-Waterproof IP X4 Casing

For Maximum Safety – Protects from water spray from any direction.

Durable Structure

Made of High-Quality ABS material – High durability and longer lifespan with ABS casing.

Large Magnesium Anode

For Protection Against Water Tank Corrosion

Ceratech Technology Tank Coating

For Efficient Heating – Protective enamel coating formula to enhance anti-corrosion function and extend the durability of its water tank interior.

Double Safety Thermostats

For protection against overheating – Enhances safety in temperature control and protection against overheating.

Fast Heating Time

High-Density PU Insulation For Energy Efficiency – Thick PU insulation layer engineered for very long heat conservation even after heater turned off, making it energy saving and extending showering comfort.

Available In Two Design Options

Slim or Cube Design


Vitowell Comfort Storage Water Heater

Vitowell comfort storage water heaters are unbeatable in terms of durability and safety. Equipped with the exclusive Viessmann Ceratech Technology, the units guarantee maximum corrosion resistance of the water tank and are splash-waterproof. Vitowell comfort heaters are not only very robust but also smart: energy-efficient programs allow the temperature to be controlled with the utmost precision. They have a double-temperature thermostatic control, withstand a maximum working pressure of eight bar and provide a maximum operating temperature of 75°C. Additional features, like LED temperature ready, heating element technology or programming options are available among three products, the Classic, Premium or Deluxe heater.

Ceratech Technology®

Viessmann adopts the exclusive Ceratech Technology® enamel coating formula to extend the durability of its water tanks. The anti-corrosion function performed by the internal water tank ceramic layer has been developed with decades of expertise and continuous improvement of materials and applied technology. The ceramic layer has a particularly high density and a perfectly smooth surface, undergoing a 100% quality check off the production line. Acid corrosion resistance, alkaline resistance, temperature and pressure resistance – all these technical characteristics are in line with the latest German quality standards to guarantee a long-lasting durability of the heater at its core.

Capacity For Different Needs

Vitowell storage heaters serve different capacities that you may need at your home. 30 litres units are useful for the main bathroom of a family. You may opt for 10 or 15-liters storage for your kitchen or service bathroom. If you are using a bathtub, our Vitowell comfort cylinders with a bigger capacity of 50 to 100 litres will be your choice.

High Quality Standards For Durability And Safety

Viessmann’s German heritage obliges us to offer products at high quality standards. All our storage water heaters are made of high-quality ABS material. They meet EU standards for health, safety, and environmental protection and are developed as per strictest quality standards. This translates into high level precision, safety and durability in daily operation.

Two Design Options

Vitowell comfort Classic heaters are available in two designs: cube and slim. The slim heater sticks out by its simplistic, modern design. Thanks to its shape, it can also be concealed in a false ceiling. The traditional, compact design makes the cube heater particularly suitable for small bathrooms.


Product Details

viessmann-vitowell-comfort-classic-slim-storage-water-heater-dimensions-waterheatercity-singaporeCheck the dimensions of Vitowell Comfort Classic water heaters in the following overview to assure that the device fits well into your home.

Dimensions / Capacity   20 l  
A (mm) 630
C (mm) 279
D (mm) 100
E (mm) 140
F (mm) 116


Power/Voltage 20 l: 350W / 220V
Weight 20 l: 10.5 kg

About Viessmann

Founded in 1917 in Allendorf, Germany, Viessmann is a fourth-generation family business that is passionate about creating living spaces for generations to come. Now one of the world’s leading providers of sustainable climate (heating, cooling, water and air quality) and renewable energy solutions. Viessmann’s German heritage and industry leadership have helped build a modern and highly integrated ecosystem of solutions that emphasize safety, ease of use, high-quality design and durability. An innovation leader offering solutions for both consumer and commercial applications.