Does anybody know the cost of replacing the external expansion vessel on my HRM Wallstar condensing boiler - keep having to top it up.
Thanks in advance.
Thanks in advance.
I want the cost of fitting it !!!!!!!!!!!!!!!!!!!
It's not on the Wallstar. From the OP's description it's a separate vessel on the wall indicating a regular Wallstar on a sealed system.
Well now,
i pressed in schraeder valve and only air comes out - so why is pressure dropping?????
Thanks.
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