What is a system
deep clean?
What is poor water quality?
Corrosion occurs naturally in environments where metal and water meet.
If left untreated in your heating system, corrosion can form into black
iron-oxide sludge (known as sludge or magnetite) and other debris can
build up in all open and closed-loop heating systems, causing
performance deterioration and, ultimately, failure.
Poor water quality is a leading cause of heating system breakdown in the
UK. But it's not permanent. Performing a deep clean of your heating
system can help get your heating system back to it's best, keeping you
warmer while reducing the amount of gas you're using.
What is poor water quality?
Corrosion occurs naturally in environments where metal and water meet.
If left untreated in your heating system, corrosion can form into black
iron-oxide sludge (known as sludge or magnetite) and other debris can
build up in all open and closed-loop heating systems, causing
performance deterioration and, ultimately, failure.
Poor water quality is a leading cause of heating system breakdown in the
UK. But it's not permanent. Performing a deep clean of your heating
system can help get your heating system back to it's best, keeping you
warmer while reducing the amount of gas you're using.
* These facts are based on independent research of UK central heating systems by Delta EE.
Get sludge out!

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Poor water quality leads to sludge in your system, which can clog up pipework, radiators and your boiler. Find out how a system deep clean can help.
Watch VideoHow do I know if I need a deep clean of my heating system?
The
most common tell-tale sign of sludge build-up is cold patches on radiators,
usually starting at the bottom of the panel.
The connecting pipework is hot, but
the radiator remains cold to the touch meaning it's not producing as much heat as it should.
You may need to bleed the radiators
more regularly than normal, or the house is taking longer to heat up than usual
and you are finding yourself turning up the thermostat.
To
properly detect a need for a deep clean you should call your local heating
engineer.
Many installers use thermal imaging equipment to show you the cold
patches of your radiators, but the best way to detect for a dirty system is to
ask your heating engineer to carry out a very simple water test to show you your water cleanliness.

What are the benefits of having a deep clean?
Deep cleaning your heating system does come with an upfront cost, but the long term benefits are well worth it.
If a dirty system is cleaned thoroughly, you reduce the chances of it breaking down and leaving you without heating and hot water, and you can:
- Reduce the amount of gas you use to heat your home by up to 7%
- Get up to 47% more heat out of your radiators, so you won't need your heating on as long to be warm
- Extend the life of your boiler by enabling it to work efficiently throughout it's lifetime