Heating Water Treatment Explained (VDI 2035)

When it comes to water treatment in the UK, you'll be forgiven for thinking that you need thousands of pounds worth of laboratory equipment on site to do testing and expensive filling machines and goodness knows what else. 

In reality, the vast majority of the time in the UK, you're fine filling with tap water.  In fact in many scenarios you might be okay just reusing the water that's already in the system.

Any system with chemicals in should be tested annually to check the levels and many manufacturers and chemical companies are moving towards that. 

If you're doing tests annually anyway, then you could remove a part of this by just not installing an inhibitor and just do basic water quality management.  This will reduce corrosion and reduce scale in your system water.