How Does Power Flushing Work?

Understanding the process behind a clean heating system.


The aim of a power flush is to restore the circulation of water around the heating system. This helps eliminate noise from the boiler and pump.

Domestic Power Flush for home


A heating engineer will connect a high flow and low pressure pump to the heating system.

Chemical Cleaning

Cleaning chemicals, containing sludge breaking enzymes and often a de-scaler, are added to flush out any debris or bacteria present in the system.


The chemicals work their way through, breaking down limescale, rust, and other debris.

Final Clean

To ensure no contaminants remain, a clean water flush is performed after the chemical cleaning.

Do You Need a Power Flush?

Signs that suggest you might need a power flush, including cold radiators, banging sounds, discoloured water