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Europe’s leading manufacturer of stainless-steel cylinders

8000554 0063 nl cut gr min

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OSO at ISH logo for web 2025

OSO Hotwater is one of the largest manufacturers of world class electric and indirect stainless steel hot water cylinders. Manufactured in Norway since 1932, OSO cylinders have won countless awards for quality and sustainable production. We can offer a large selection of hot water cylinders adapted to renewable energy systems and electric domestic hot water cylinders. 

Quality

Throughout 60 years we have perfected the stainless steel heater. The combination of material choice, robotized production and intelligent solutions gives the OSO products unbeatable lifetime.

Energy efficiency

OSO heaters have the lowest heat loss on the market, and are designed to give maximum performance. This gives our products the lowest power consumption and a unique lifespan economy for our customers.

Environment

50 years of efforts and investments to unite people, environment and industry, and for this given several awards. In three generations our objective has been the same:

Protect Our Beautiful Planet!

News

Energy transition at ISH 2025 – Join OSO Hotwater!

March 5, 2025
OSO Hotwater is taking a lead in the the energy transition with innovative products, and ...
Read more

OSO Hotwater Group Announces New Establishment in New Brunswick.

September 5, 2023
New Brunswick — OSO Hotwater Group, a leading supplier of smart stainless steel hotwater tanks ...
Read more
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Ethical guidelines

Over 85 years OSO Hotwater has earned the trust from suppliers, co-workers and customers. We are still going to earn, and manage, this trust in an exceptionally good way, and value the opinion of our partners.

Our guiding targets:

  1. Safe products, manufactured by safe processes
  2. Class leading quality and efficiency
  3. Correct products delivered on-time
  4. Cost- and energy efficient processes
Code of conduct

OSO Hotwater AS

Organization number 936 603 947

Publisher

Patents and trademarks

Information about the product owners’ rights

OSO Hotwater’s web pages may contain or provide references to trademarks, patents, owner information, technologies, products, processes or other rights of OSO Hotwater Group AS. No license or rights to any of these trademarks, patents, information about owners, technologies, products, processes or other rights of OSO Hotwater Group AS are assigned or granted to users of this site.

A number of the products on the OSO Hotwater website may be or are protected by patents or trademarks. This includes both production technology and / or complete products. These may be specified in the site’s texts, but are not required to be protected by the patent. The underlying technology for the production of the product may or may not be the property of OSO Hotwater.

It is to be noted that all violations of OSO Hotwater Group AS’ rights will be subject to legal prosecution.

Patents and trademarks

Legal terms

Information about the legal terms relating to our web site

This site, including its content, is fully owned by OSO Hotwater. We reserve all rights to this material.

You may store extracts from the OSO Hotwater website on your personal computer and print copies of these for personal, non-commercial use. You are permitted to use and distribute necessary and minor extracts from the OSO Hotwater website to facilitate direct links / pointers to the pages, or linking for search services on the Internet.

Any other use, such as reproduction, translation, processing, arrangement, and any other modification, distribution or storage of this Site in any form and by any means wholly or in part, is not permitted. The information presented on this site will not be accurate, up to date, or current for circumstances surrounding a particular issue. We can not assume any liability for inaccuracies or omissions. Any decisions made based on information contained on this site are at your sole discretion.

Neither OSO Hotwater nor any of OSO Hotwater subsidiaries accept liability for any direct, indirect, special, substantial or other loss or destruction of any nature which may result from access to or use of this site or its content. This notice is subject to and must be interpreted in accordance with Norwegian law.

Legal terms

Privacy

Information about how our web site handles your personal data.

OSO Hotwater appreciates your visit to our website and your interest in our products and services.

We want you to be sure that your personal information is processed safely. All personal information you provide to OSO Hotwater is only used to provide you with better service.

The information is used as follows: The information is collected and stored to help us meet your inquiries and provide you with the services you request. Visits on our web pages are tracked so we can assess which parts of the website provide the best service for our users.

OSO Hotwater does not sell any of the information captured. Please note, however, that our web pages may contain links / pointers to other websites. OSO Hotwater is not responsible for the manner in which privacy is practiced on such websites.

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