System Heating Filters

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Central Heating Filters
All our engineers are qualified Gas safe and City & Guilds Heating Engineers we also support manufacturers in service and repair.


Filters deliver a simple and efficient way to remove all types of dirt, debris and sludge from central heating systems.

Features and Benefits:

Easy to install and suitable for vertical, horizontal and even diagonal installations.
Unique dual action removes both magnetic and non-magnetic dirt.
Keeps heating systems running at their maximum efficiency.
Independently tested energy efficiency.
Cleaned in seconds with no need to remove the magnet or the unit from the system.


The internal SpiroTube in the SpiroTrap MB3 delivers superb non-magnetic filtration. As the dirt particles collide with the Spirotube, a filtration process is initiated by the creation of a laminar no-flow zone. This laminar no-flow zone provides enough opportunity for gravity to take effect and the dirt then falls to the bottom of the collection chamber.

Spirotrap MB3 Tube

THSHeat says the single biggest innovation on the SpiroTrap MB3 is a, high-power, removable external magnet. The external magnet delivers exceptional magnetic filtration by utilising our unique ‘intelligent magnetic field boosting technology’.

The removable, external magnet also makes draining the unit quick, clean and easy. Simply slide the magnet down and off the unit (this drags any collected magnetite down to the collection chamber) and open the drain valve. There’s no need for any further dismantling of the unit or manual cleaning of components… it couldn’t be easier.


Magnetic Filters

  • A high performance in-line system filter
  • Ideal for use in restricted spaces and access areasTF1-Compact
  • Easy to fit
  • Multiple orientation capability
  • Fast and easy to clean without dismantling unit
  • Removes system contaminants
  • Fits vertical and horizontal pipework
  • Will not block or restrict flow
  • As with all magnetic products, if you have an implanted cardiac device extra caution should be taken at all times when handling any Fernox TF1 Filter.
  • TF1-Compact