What Is a Magnetic Filter?
A magnetic filter is a compact device fitted to your boiler pipework that captures rust, sludge, and metallic debris circulating through your central heating system. These contaminants typically result from internal corrosion in radiators and pipework—a common issue in UK homes, especially in areas with older housing stock.
If you live in Manchester or Wigan, where many homes rely on gas boilers for warmth, installing a magnetic boiler filter could be one of the smartest upgrades you make. At JJK Gas Services, your trusted local gas engineers in Wigan, we’ve seen firsthand how sludge and debris can reduce heating efficiency, increase energy bills, and shorten the lifespan of your boiler.
In this guide, we’ll explain:
What magnetic filters do
Why they’re essential for boiler protection
How they improve central heating performance
And how they can help you save money on heating costs
Why Sludge Build-Up Is a Problem
Sludge can lead to:
Cold spots in radiators
Reduced boiler efficiency
Noisy systems
Increased energy bills
Costly breakdowns and boiler repairs
Over time, these issues can shorten the lifespan of your heating system and leave you without heating when you need it most – especially during the winter.
Benefits of Installing a Magnetic Filter
As experienced gas engineers in Wigan and Manchester we recommend magnetic filters for almost every installation. Here’s why:
 Protects your boiler: Traps harmful debris before it reaches delicate boiler components which will impact the life of your boiler.
 Improves energy efficiency: Keeps your system running smoothly and more efficiently
 Reduces maintenance costs: Prevents blockages that lead to expensive repairs
 Extends system life: Protects your boiler, radiators, and pipework long-term
 Works with new and existing systems: Can be installed during a boiler replacement or retrofitted to older systems
Do I Really Need One in Wigan?
Yes – especially in areas like Wigan where many homes have older pipework and radiators. We’ve helped hundreds of local customers improve system performance and avoid costly repairs by fitting magnetic filters.
At JJK Gas Services, we carry out boiler servicing, power flushing, and magnetic filter installations across Wigan and the surrounding areas. Whether you’re fitting a new boiler or just looking to protect your current system, a magnetic filter is a worthwhile investment.
When Should You Fit a Magnetic Filter?
During a new boiler installation
Alongside a power flush
As part of system upgrades or maintenance
If your radiators are slow to heat or your boiler is making strange noises, your system may already be clogged with debris. We offer affordable options for filter fitting and system cleaning – all handled by qualified gas engineers in Wigan.
Book a Magnetic Filter Installation with JJK Gas Services
JJK Gas Services is a trusted name in Wigan for gas, heating, and boiler work. As Gas Safe Registered engineers, we provide honest advice, expert installation, and fair pricing.
If you’re interested in the price of a new magnetic filter, feel free to contact us or click the link to submit a quote request. Contact Us

 Local to Wigan? Call us today to discuss magnetic filters or book a visit.
 Tel: 01942 466 486
 Website: www.jjkgasservices.co.uk
 Email: Info@jjkgasservices.co.uk