I have a Santon unvented system providing hot water. Up until now everything has been great, hot and cold at a good pressure. Just lately i have noticed the cold pressure has fallen but the hot is still good. How can than be if the hot water pressure is derived from the cold supply pressure?
I have need looking for restrictions in the cold but can't really think what it could be, was considering changing scalemaster inline scale inhibitor but does sound like bit of a long shot!
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