I have an unvented hot water tank upstairs, fed from a boiler in the kitchen.
For a while the hot water pressure throughout the house has been dropping. The cold seems to be as normal.
Does anyone have any advice or guidance on where to look for the source of the problem, or whether there is anything simple I can do to address?
Possibly linked, I've noticed if there are a couple of outlets running simultaneously, say the shower and a sink, it (sometimes) results in a 'shaking' where the flow drops dramatically - this in both the hot or cold taps. It's feels like the is a partial blockage somewhere.
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