Magnetic filters and their benefits for your boiler


Magnetic filters are a device that can be fitted to your central heating system to improve the performance of your boiler. They work by trapping magnetic particles and preventing them from circulating through your boiler and causing damage. In this blog post, we will explore what magnetic filters are, why they might be needed, how they work, alternatives, and how a homeowner goes about getting them fitted.

What are magnetic filters?

Magnetic filters are devices that use powerful magnets to attract and capture metallic particles that can be found in your central heating system. These particles, known as sludge, can accumulate over time and cause blockages in the pipes and components of your boiler. Magnetic filters are designed to prevent this from happening by removing these particles before they can cause any damage.

Why might you need a magnetic filter?

If you have a central heating system, then it is likely that your boiler is at risk of damage from sludge build-up. Over time, the water in your heating system can corrode the metal pipes, creating rust particles that can be carried around the system by the circulating water. These particles can cause blockages and other problems in your boiler, leading to reduced efficiency and potential breakdowns. By fitting a magnetic filter, you can prevent these problems from occurring and keep your boiler running smoothly.

How do magnetic filters work?

Magnetic filters are usually installed on the return pipe to your boiler, where they can intercept any sludge particles that are flowing back towards the boiler. As the water passes through the filter, the magnetic field attracts any metallic particles and holds them in place, preventing them from causing damage to your boiler. Over time, the filter can become clogged with sludge, but this can be easily removed by a qualified heating engineer during a routine service.

Having a magnetic filter fitted to a boiler: A step-by-step guide

  1. If you have decided to get a magnetic filter fitted to your central heating system, the first step is to contact a qualified heating engineer. The engineer will typically visit your property to assess your central heating system and determine the best location for the filter.
  2. During the visit, the engineer will inspect your pipework, radiators, and boiler to check for any signs of corrosion or sludge build-up. They will also examine the location of the pipework and radiators to ensure that the filter can be fitted in an appropriate location.
  3. Once the location of the filter has been determined, the heating engineer will shut down your central heating system and drain the water from the pipes. This will allow them to cut into the pipework and install the filter.
  4. The filter will be installed on the return pipe to the boiler, where it can intercept any sludge particles that are flowing back towards the boiler. The engineer will then connect the filter to the pipework, ensuring that it is securely in place.
  5. After the filter has been installed, the engineer will refill the system with water and bleed the radiators to remove any trapped air. They will then turn the heating system back on and check that everything is working correctly.

Your FAQs answered

Q: How often do I need to clean my magnetic filter?

A: Your filter will need to be cleaned during your annual boiler service, which is usually recommended once a year.

Q: Can I fit a magnetic filter myself?

A: It is not recommended that you fit a magnetic filter yourself, as it requires specialist knowledge and tools. It is best to contact a qualified heating engineer to do this for you.

Q: Do all boilers need a magnetic filter?

A: Not all boilers need a magnetic filter, but they can be beneficial in systems that are prone to sludge build-up. It is best to consult with a heating engineer to determine whether a magnetic filter is necessary for your system.

Magnetic boiler filters – The key points

In conclusion, magnetic filters can be an excellent investment for your central heating system, protecting your boiler from sludge build-up and maintaining its efficiency. If you think a magnetic filter might be right for you, contact a qualified heating engineer to get one installed today.

2023-04-27T08:43:52+00:00 April 27th, 2023|