What is a Magnetic System Filter?

Heating systems can become restricted from time to time thanks to a build up of rust and corrosion, reducing their efficiency and increasing energy bills. 

Magnetic system filters can help to combat this build-up and expand the lifespan of your boiler.

Do I need a filter on my boiler?

There are a few signs that suggest a magnetic filter would be beneficial on your boiler. These signs include:

• Cold spots on your radiators
• Strange boiler noises, such as banging and gurgling sounds
• Regular leaks 
• Issues related to inconsistent temperatures
• Issues with hot water

The longer these issues are left without being fixed, the more damage they are likely to inflict on your boiler. A magnetic filter will help to combat these issues and can protect your boiler from the effects of sludge build up.

However, significant build-up cannot be fixed with a filter and in more severe cases, a full system cleanse should be carried out by a professional heating engineer.

It is now a requirement under building regulations to have a magnetic system filter installed as part of any new boiler installation. We will therefore always install a magnetic system filter with any new boiler installation. 

How do system filters work?

Magnetic system filters work by extracting the rust minerals from the water as it travels through your heating system, helping to prevent sludge from forming. 

The filter attracts iron and steel components from the rust, keeping the system clear of sludge. System filters are preventative measures to keep your system clear, rather than a cure to remove the sludge.

Are magnetic filters worth having?

Yes, magnetic filters are worth having since they help to prevent harmful sludge from building up in your heating system. 

Filters can help to keep your heating system running smoothly, preventing the need for expensive repairs or system flushes due to a build up of rust and corrosion.

The benefits of magnetic system filters

Fitting a magnetic system filter to your boiler could bring you many benefits, such as:

• More efficient heating system 
• Lower energy bills
• Reduced carbon footprint
• Reduced risk of needing repairs
• Longer boiler lifespan

How do you clean a magnetic filter?

There are a few steps to follow when cleaning your magnetic system filter. We do recommend getting a heating engineer to carry out this work as part of your annual boiler service. 

• Turn off the electricity supply 

Before you do anything, you’ll need to turn off your boiler’s electricity supply and ensure you have something to cover up your floor. This will ensure no sludge or dirty water falls onto your floor.

Be sure to switch off the isolation valves too. 

• Remove the lid 

To remove the lid off the magnetic filter, you’ll likely need to unscrew it. You may need to put in some extra force as your magnetic filter may be screwed extra tight for security. 

You may even have a device from your installer to help remove the lid. 

• Remove the magnet 

When you’ve opened the lid, you’ll be able to identify the magnet and the filter. A dirty filter will have sludge and debris around it, so it will be obvious where you need to clean.

Make sure you remove the magnet before you begin cleaning it.

• Clean the filter

The most effective way to clean the filter is by using a high pressure hose to remove the dirt and debris. Take extra care to thoroughly clean the filter so no debris is put back into the system. 

• Replace the magnet and lid

When complete, place the magnet safely back into the filter and fit the lid on as tightly as possible. Then put your filter back in its place, reopen the valves and turn on your boiler. 

Getting a magnetic filter installed

If you’re looking to prolong the life of your boiler and reduce the amount of sludge in your heating system, then a magnetic filter may be the best solution for you. Not only can it save you money on your bills, but it will ensure your boiler is running as efficiently as possible. 

If you’d like a magnetic filter installed, or you have any other questions about magnetic filters, contact us today. One of our qualified heating engineers will be able to answer any questions you may have.