Martyn explains: debris in the heating system

This is our new blog segment where we give you expert advice on plumbing. This segment is called "Martyn explains" and in these blog posts, our plumbing expert, Martyn Kukk will answer questions on certain topics so that he can explain it in finer detail. First of all, lets learn a little bit about Martyn.


Martyn Kukk is the Managing Director of M K Mechanical Services Limited and here is a shortened list of his experience in this industry. Here is his long experience in the industry summarised in a few bullet points:

  1. Provided design expertise to many leading boiler manufacturers over 30 years on system design, component analysis and commissioning of various products.
  2. 25 years of providing reports for litigation and court. All reports used successfully.
  3. On site commissioning of domestic and commercial installations.
  4. Planning out large boiler plant rooms for various applications throughout the UK.
  5. Specialist in the area of boosted water services.

So now you know about our expert, time to see what he had to say about debris in the heating system.

How does debris get into the system?

Debris is created within a system by aeration and dis-similar metals reacting against each other (ie copper, brass and steel), debris is also a result of a number of factors such as poor system flushing.


How can it damage the heating system?

Damage can be caused to the boiler by pitting of the heat exchanger, residue building up in the pump leading to early pump failure, jamming of motorised valves, radiator valves and trv’s.


How do magnetic filters prevent debris from damaging the system?

The fitting of a magnetic filter will prevent any magnetic particles from continually travelling around the system by the removal onto the magnet. Aeration is another matter.