Why Does My Central Heating Need a Powerflush or Descale?

Rust occurs in all central heating systems producing a black (iron oxide) sludge and, in hard
water areas, lime scale builds up in combination boilers just like in your kettle causing the following problems:

Radiators cold at bottom from trapped black sludge. Radiators cold at bottom due to black sludge.


Powerflush
Radiators cold all over due to blocked valves and pipes. Radiators cold all over due to blocked valves and pipes.


Powerflush
Radiators cold at top due to trapped gas, a by product of system rust. Radiators cold at top and need bleeding due to gases, a by product of rusting.

Powerflush
Boiler cutting out and no circulation due to blocked pump or heat exchanger. Boiler cutting out and no circulation due to blocked pump.


Powerflush
No hot water due to blocked pipes and heat exchangers. Little or no hot water due to blocked pipes and heat exchangers.

Powerflush or Descale
Irritating boiler noise from lime scale and sludge build up, a warning sign of imminent costly problems. Irritating boiler noise from sludge or lime scale build up, a warning sign of imminent costly problems.

Powerflush or Descale


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