05/08/2026
This magnetic filter hadn't been cleaned for years! π¬
All this sludge caused the boiler's diverter valve to seize and blocked the plate heat exchanger, meaning the heating came on whenever the customer used the hot water.
Both parts had to be replaced.
A simple annual boiler service, including cleaning the magnetic filter, helps prevent costly repairs and keeps your heating system running efficiently.
Don't skip your boiler service β prevention is always cheaper than repair.