Sludge in your heating system
- Radiators cold at the bottom is first warning sign
- Bleeding radiators black coloured water
- Radiators not getting as hot as they used to
What causes sludge?
- It’s when water and steel in radiators oxidize and cause a black substance
I tend to find that its old heating systems that attract more sludge. Maybe because there is a header tank in the loft and more air gets into the system. You tend to find that with a combi ...Continue Reading →