Worcester 22mm Greenstar Magnetic System Filter 7733600236. The new Greenstar System Filter has been designed to combat the damaging effects of system debris and pollutants, allowing homeowners to protect their boiler or heat pump for a fraction of its cost. The accessory has a high powered internal magnet that can capture up to 300g (22mm) or 500g (28mm) of magnetic debris.

- Longer boiler lifespan
- Worcester offers an optional extended warranty up to 10 years when fitted with any new worcester boiler installation*
- Magnetic and non-magnetic filtration to collect a wide range of system debris
- Can help to reduce system running costs*
- Increase the comfort and efficiency of your heating system
- Drainage point at the bottom for ease of access during servicing
- Over tightening prevention feature
- One-way valve for ease of adding system chemicals