Limescale, sludge, and rust cause leaks and blocked pipes. Dirty water in your pipes reduces the efficiency of your heating system..
Radiator Cold Spots
Sludge build-up causes cold spots in your radiators. This means they have to work harder to heat a room and you waste more energy.
A clogged boiler and pump causes breakdowns. 87% of boiler breakdowns are due to dirty water in your central heating system.