Industry experts and stamp of approval

It's one thing for us to tell you how great our products are; we know the importance of independent accreditation and endorsement. That's why we have sought a wide range of UK and international approvals and accreditations for our products and manufacturing processes. This means that, wherever you are in the world, you can be sure that Heatrae Sadia products are safe, reliable, fit for purpose and manufactured to the highest quality standards.

We are also acknowledged experts in the field of water heating, and belong to many industry organisations. We share best practice with other businesses and work hard to lobby Government on behalf of the industry.


The Kiwa UK Building Regulations Approved Product scheme is applicable to Unvented Water Heaters above 15 litres, to demonstrate compliance with G3 of the Building Regulations.


Nemko provides a global certification service recognised in over 120 countries around the world. It proves that products comply with EMC and safety legislation applicable in each of these countries, including the CE marking requirements in Europe. In countries where certification isn't a specific legal requirement, it provides an independent endorsement that increases customer and reseller confidence.


Any water fitting, which when installed, will carry or receive water from the public mains water supply in the UK, must comply with the Water Supply (Water Fittings) Regulations or Scottish Byelaws. These require that a water fitting should not cause waste, misuse, undue consumption or contamination of the water supply and must be 'of an appropriate quality and standard'. WRAS Approval is the easiest way to demonstrate compliance as it is granted directly by representatives of the water suppliers and is therefore accepted by every water supplier in the UK.

hot water association

Hot Water Association (HWA) Charter
The Hot Water Association (HWA) is the leading trade body for domestic hot water storage. HWA Charter members are independently audited. Independent governance supports the Charter principle of being clear and honest; not only do members have to comply with the Charter standards, they also have to show an external accreditor how they do it.

The HWA Charter Code of Practice requires that all members adhere to the following:

To supply fit for purpose products clearly and honestly described
To supply products that meet or exceed appropriate standards and building and water regulations
To provide pre and post sales technical support
To provide clear and concise warranty details to customers

As a responsible manufacturer, Heatrae Sadia has committed to adhere to the standards set out in the HWA Charter. As a customer, you can be assured of our manufacturing standards and product reliability. Our after sales service provides satisfaction and confidence in our business, offering a full service along with product supply.

For more information on the HWA Charter, visit To contact the Hot Water Association, call +44 (0)1926 513742 or visit



BS EN ISO 9001:2015
Heatrae Sadia is accredited with the quality standard BS EN ISO9001:2015 which demonstrates our commitment to quality manufacturing and we regularly undertake assessments to maintain these quality standards.
View certificate


Energy related Products (ErP)
ErP is an EU directive to improve energy efficiency and performance standards of products. The directive is in force from 26th September 2015. Heatrae Sadia has a full portfolio of ErP compliant products available.

Related information

Our factory compliance standards

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