Topping up pressure of boiler

Question

How do you top up the pressure in a gas boiler? Can I do this without calling out an engineer?

Ryan · Answer

Open the filling loop both valves it’s a 2 black handles till pressure is 1.5 bar

Anthony · Answer

Some boilers have a fill system as part of the boiler the boilers instructions should explain how to top up.
If not there will be a silver metal pipe with a knob on one or both ends turn these on to fill.
Alternately call someone out to show you how to top up once then you know.

Lee · Answer

Yes you can. To top up boiler pressure you allow some water in from the cold main. You can do this at the filling loop. The ideal pressure is between 1 and 2 and is normally marked in green on the dial.

Jonathan · Answer

Yes it’s possible to do . 

Theres usually a metal braided/ flexible hose with black tap / handles to turn a quarter to allow water to enter the boiler/ heating system. 

On some boilers the filling loop can be hidden or built into the underneath of the boiler making it difficult to locate. 

Turning one tap handle then the other slowly will allow water to enter the system

Jiten · Answer

Yes you can and the boiler instructions should show you how to do this.You should be aware that topping up the presure of a central heating system should only be required once or maybe twice a year at the most.If it requires topping up more often then there may be an issue which will get worse as time goes by which will need investigating.

Laura · Answer

Yes you can. It varies depending on brand but it will either have an external filling loop under the boiler or nearby (a flexible silver braided hose with a black tap either end, or may have a slot for a screwdriver to turn instead), or it will have a built in filling link - consult your boiler manual in this case or search for a video tutorial for your boiler model, you need to know which 2 taps to turn. Some Worcester's need to have a special key inserted. Pressurise to around 1.2 - 1.3 bar whilst cold.

Clive · Answer

Cam be done through the filling loop , a. Gas engineer doesn't have to be called as it is on the water side of the boiler , but don't over pressurise it

Cameron · Answer

Yes, try youtube. There's normally a video that relates to topping up your particular boiler.

Abubakar · Answer

Yea u can do it yourself but if u have to topup quite often then u should call engineer out

Stanley · Answer

Every boiler is different. Look up your boiler on youtube. 

If it happens a lot there maybe a leak so it may be better to get a professional.

Topping up pressure of boiler

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