Jargon Buster - A

Confused by DIY terms? We’ve got you covered from A-Z with our Jargon Buster!

Adjustable damper

Regulates the temperature and flow of an opening from which air discharges.

Air release point

A place where air can be purposely released from a central heating radiator system.

Air separator

A device fitted to a central heating system that eliminates any small bubbles of air circulating in the system water. This reduces circulation noise and can reduce corrosion.


A blockage in a water pipe caused by a trapped bubble of air, reducing or stopping the flow.

Automatic on-off switches (programmers and timers)

Devices that enable the central heating system to switch on and off at the times you choose.


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