Bosch WST 120-5 C
Code: 8718543055Related products
Product detailed description
- design: floor-standing, cylindrical
- with a usable volume of 117 l
- inspection opening for cleaning and maintenance at the top
- suitable for combination with a wall-hung condensing boiler
- hot water can be drawn at several points simultaneously
- easy installation and economical operation
- circulation circuit can be connected directly to the tank body (bacteriologically clean water)
- insulation manufactured without the use of fluorinated and chlorinated hydrocarbons
- high corrosion resistance
- enamelled surface and built-in protective anodes ensuring compliance with environmental requirements and a long service life
- energy efficiency class B

Frequently Asked Questions
- What tank volume should I choose? A common consumption estimate is around 40–50 litres of hot water (at approx. 40–45 °C) per person per day for standard use (showering, washing); if you take baths or have several bathrooms/outlets, you should plan for a larger volume. When choosing, also consider whether the tank will be heated by a high-output boiler (faster heating, so a smaller volume may be enough) or, for example, only by a solar system (where a larger volume is actually beneficial for storing heat accumulated during the day).
- Can I connect this BOSCH tank to my existing boiler? In most cases yes, but you should check the compatibility of the hydraulic connection (dimensions and type of fittings) and whether your boiler supports control of the tank heating (a temperature sensor in the tank and possibly a switching valve are required) — you will find these details in the product’s technical parameters, or our customer service can advise you.
- Where and how should the tank be installed? The tank should be placed as close as possible to the heat source (the boiler) to minimise heat losses in the connecting pipework, while still leaving enough space around it for service access (anode replacement, safety valve inspection).
- Does the installation have to be done by a professional? We always recommend leaving the hydraulic connection to the water supply and to the heat source, including fitting the safety valve at the correct pressure, to a qualified heating engineer/plumber — an incorrectly fitted or missing safety valve is a safety hazard.
Additional parameters
| Category: | 65 – 400 l Storage Tanks |
|---|---|
| Warranty: | 2 years |
| Weight: | 64 kg |
| EAN: | 4051516678135 |
| Version: | floor-standing, cylindrical |
| With usable volume: | 117 l |
| EAN: | 4051516678135 |
| Gross weight: | 76,08 kg |
| Net weight: | 64 kg |
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About the company
For more than 125 years, we have been supplying the market with efficient, easy-to-operate and at the same time reliable equipment that creates warm and cozy homes for people. Bosch Thermotechnology today offers its customers worldwide solutions for room climate, hot water and decentralized energy management.
Since 1932, the brands Junkers and Bosch have been united by a strong partnership. The merger enabled the combination of traditional craftsmanship with the most modern technology. Under the Bosch brand, we now focus on the future with intelligent building technology, in which thermal technology plays an important role.
The traditional brand Junkers continues, because history, tradition and experience are still embedded in every Bosch-branded product. Junkers means more than 120 years of proven technology and the highest quality for us; we proudly created a memorial for this brand with its own museum. At the company in Wernau, we present the continuation of the history and the life's work of the founder Hugo Junkers.
History
In 1886, Robert Bosch founded the "Workshop for Precision Mechanics and Electrical Engineering" in Stuttgart. This was the beginning of today's globally active company. From the very beginning, innovation and social responsibility were characteristic of the company.
1886 - 1905 - The history of the Bosch company begins with many first steps. Steps toward independence, into the automotive market, into markets outside Germany and into the main production hall.
1906 - 1925 - The company's first astronomical global upswing was brutally interrupted by World War I, after which the Bosch company had to transform and focus on innovation to cope with its consequences.
1926 - 1945 - The Bosch company coped with the speed of the economic crisis and the dictates of National Socialism through the power of innovation and perseverance, until World War II brought enormous challenges once again.
1946 - 1959 - At the end of World War II, the Bosch company lost its international branches for the second time. A large part of its production facilities lay in ruins. The following two decades were devoted to reconstruction, but also to entering new business areas.
1960 - 1989 - The period between the 1960s and 1980s was marked in the Bosch company by a transformation that turned it into a diversified group of independently managed divisions, a global company and a market leader in the field of automotive electronics.
1990 - 2016 - The Iron Curtain fell, new markets emerged in Asia and software opened up new opportunities for Bosch. The last three decades brought rapid economic change, which the company had to face head-on.









We are Bosch
Our mission explains what drives us, what we have in common and what we stand for. We want to leave a lasting mark in the world — a mark achieved by a unique, exceptional team.
Our values — what we build on
Our values reflect the way we do business: Our professional ethics in our dealings with our business partners, investors, employees and society.
Future and results orientation
We focus on results. This enables us to secure our future and at the same time
creates a solid foundation for socially beneficial projects of our company and the Robert Bosch Foundation.
Responsibility and sustainability
We act economically and responsibly in the interest of the entire society and the environment.
Initiative and consistency
We act proactively, take entrepreneurial responsibility and are consistent in pursuing our goals.
Openness and trust
We communicate important topics of our company in a timely and open manner. This represents the best foundation for a relationship based on trust.
Fairness
In our mutual contact and with business partners, we consider mutual fairness to be a condition of our success.
Reliability, trustworthiness, legality
We promise only what we can fulfill. We accept agreements as binding and respect and comply with the law in all our business transactions.
Diversity
We value diversity and promote it, because it enriches us and is a source of our successes.
Bosch in Slovakia
Bosch already had its first representation in former Czechoslovakia as early as 1920. It resumed business activities in Prague in the autumn of 1992 and opened its first branch in Bratislava the following year.
The company in Slovakia operates in three locations and employed more than 1,000 employees in 2020 (as of December 31, 2020). The consolidated turnover in 2020 reached 440 million euros.
The regional company represents the commercial, marketing and service activities of the company
Bosch products and services are designed to fascinate and improve the quality of life by providing innovative and useful solutions. Thanks to this, Bosch worldwide offers technologies that are "Created for life."

