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We recommend to always measure the overall dimensions and threaded or flanged connection of your current circulator to compare it to the alternatives we show.

The replacement overview is our recommendation to help you find the most suitable pump for you. We make no claim for completeness of product types and data. Alterations may be made, and errors may occur.

Dimensions and screw connection size

The only things you need to take into account when purchasing an appropriate pump for a central heating boiler or underfloor heating system are the dimensions and the screw connection size. Dimensions refer to the length of the pump, usually 130 mm or 180 mm, and the screw connection size refers to the diameter of the pipe through which the water runs. Compare them with those of your current pump to determine what size you need to select.The only things you need to take into account when purchasing an appropriate pump for a central heating boiler or underfloor heating system are the dimensions and the screw connection size. Dimensions refer to the length of the pump, usually 130 mm or 180 mm, and the screw connection size refers to the diameter of the pipe through which the water runs. Compare them with those of your current pump to determine what size you need to select.

With the help of our videos and instructions you can easily replace your circulation pump yourself.

Replacing a central heating pump/circulation pump

Follow the following replacement steps:

  • Turn off the water supply in your central heating pipes

  • Unplug the boiler and circulation pump

  • Using the water pump pliers, undo the two swivels

  • Push them apart and remove the current circulation pump

  • Put the new circulation pump between them, noting the pump's direction of rotation (see arrow on the side of the pump body

  • Fasten the two swivels using water pump pliers

  • Plug in the boiler and the new circulation pump

  • Turn on the water supply

The video below demonstrates how you can easily replace the circulation pump yourself. If you experience any issues or have any questions, please do not hesitate to contact our expert customer services team. They will be happy to answer your questions.

How to replace a central heating pump?