How to Repressurise a Boiler via a Filling Loop
As your local Bristol Boiler Engineer the management at Reactivate Boiler and Central Heating Repairswanted to create a resource to help the fine people of Bristol with small central heating maintenance tasks. This particular one refers to the common issue of how to refill a boiler.
Some boilers & have a Standard filling loop or filling tap on pipework: This will usually look like a small silver braided hose linking two of the plumbing & heating system pipes together. It is usually on the pipework directly underneath the boiler, although it can sometimes be found under the kitchen sink or in the airing cupboard – there is no set rule about where to locate these devices so you may need to have a look around.
A filling loop will typically have a tap or a small lever of some kind on each end of the hose, although sometimes it is a screwdriver slot-type affair. With a filling loop arrangement opening both taps will refill your system, it usually refills very quickly so be careful not to operate it for too long. Very importantly you must remember to close both taps following refill and if possible remove the hose.