17 May 2022

A Quick Reference Guide for Specifiers, Installers and Maintenance Professionals of Domestic Heating and Cooling Systems

The BS 7593:2019 standard can significantly enhance the efficiency and life expectancy of a household system, whilst also reducing carbon emissions. But, what are the must-know requirements of the standard and when does it apply?

We’ll cover everything you need to know in this quick-reference guide, along with the steps you can take to ensure you’re compliant.

What is BS 7593:2019?

BS 7593:2019 is a code of practice introduced by the British Standards Institute for the preparation, commissioning and maintenance of domestic central heating and cooling water systems.

Released in 2019, the code of practice represented an industry shift towards a more holistic way of working to not only improve boiler protection, but safeguard the entire system so it performs at its optimum level. As a result, energy use is reduced, meaning lower household bills and fewer carbon emissions — an important consideration in an increasingly eco-conscious world. 

BS 7593 is a regulatory requirement within Building Regulations, Part L. 

When does BS 7593:2019 apply?

The BS 7593 standard applies to systems in individual domestic premises and in apartment complexes with multiple dwellings.

Individual Domestic Premises

If you are commissioning a system for the first time in a new build, re-commissioning one after a new boiler installation, or have completed any other major remedial work, the BS 7593 whole system approach means you can confidently offer a more complete and comprehensive service.

Multiple Dwellings

BS 7593 doesn’t just apply to boilers and should be referred to when working on individual heating circuits within an apartment complex, as well as heat interface units (HIU) and wet cooling systems.

Building Regulations, Part L

Whilst the BS 7593 is an advisory code of practice, its integration into Part L makes it a mandatory action within building regulations. 

Important takeaways 

  • The BS 7593:2019 code of practice applies to both closed loop heating and cooling circuits 
  • A permanent in-line filter must be fitted, and a chemical clean and fresh water flush should take place, before inhibitor is added to a system
  • In-line filters are required for ALL systems
  • An annual on-site water test is required to check inhibitor levels and system cleanliness 
  • Inhibitor should be re-dosed every five years or a full system water test should be carried out
  • External magnetite capture equipment and mechanical vibration of radiators can be used to enhance cleaning
  • Biocide is required in cooling and low temperature heating systems
  • Biocide can also be added to higher temperature systems for extra protection during downtime

How to Comply

As industry-acclaimed suppliers of heating and plumbing products, our technical expertise, combined with our comprehensive product range, will ensure your installation meets BS 7593 guidelines. 

Better for the planet

Efficient systems use less energy to function and, in turn, lower the amount of carbon emissions entering the atmosphere.

It’s greenhouse gas emissions like this which bring about climate change — one of the most pressing issues facing our planet today; responsible for things like more extreme weather patterns, rising sea levels and animal extinction. 

To make sure our children and future generations can enjoy a good quality of life, we all need to start making small, positive changes now…

What if all those involved in specifying, installing and maintaining heating and cooling systems in the UK simply followed industry best-practice? Not only is it good for business but — collectively — you have the power to make a significant impact on the amount of carbon being released into the atmosphere. It’s win-win!

Final thoughts

Consumers are increasingly looking for ways to improve efficiencies and extend the life expectancy of their household system. With proper system cleaning, regular testing and re-dosing, combined with the installation of an in-line filter, the British Standards have outlined exactly how to respond to this growing consumer awareness. 

In following the BS 7593 code of practice, heating and cooling system professionals can:

  • Improve boiler protection and safeguard entire systems
  • Enhance their professional reputation
  • Win repeat business from happy customers
  • Save consumers money with lower energy bills
  • Protect the planet through reduced carbon emissions 

Need Assistance?

If you need technical support or advice, we’re here to help. 

Call: +44 (0)1889 272199

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