Engineer power flushing a central heating radiator

Power flushing

Power flushing that brings your radiators back to life

A MagnaClean chemical power flush removes sludge and rust from your pipework and radiators — restoring heat and protecting your boiler.

Gas Safe registered · 198664

Power flushing

Power Flushing (MagnaClean System)

Get a quote for a power flush to clear sludge from your central heating system.

Signs you may need one

  • Banging or kettling noises
  • Lukewarm radiators or hot water
  • Leaks or dropping boiler pressure
  • Constant thermostat adjusting
London Safe Gas engineer with a branded van ready for a power flush visit

Why it matters

Corrosion inside radiators, pipes and joints creates sludge that blocks water flow, reduces efficiency and pushes up energy bills. Filters catch loose debris, but only a chemical flush removes sludge and rust that's settled into the pipework and radiators.

A clean system can let radiators produce up to 47% more heat for the same energy use — and it protects new boilers, since 60% of first-year boiler breakdowns are caused by sludge. Fitting a new boiler on top of a dirty system just means the sludge damages it too.

Pricing

Power flushing prices (no VAT charged)

RadiatorsPrice
Up to 6£350
7 – 8£400
9 – 10£450
11 – 12£500
13 – 14£550
15 – 16£600
17 – 18£650
19 – 20£700

We don't charge VAT on power flushing.

Book now

Book a power flush

Send a booking request and a Gas Safe engineer will call you back — usually within the hour during working hours.

Requests are sent to enquires@londonsafegas.co.uk

Terms & conditions

  • ·Each cylinder counts as one radiator
  • ·Each underfloor heating flow/return valve counts as one radiator
  • ·Replacement valves are included in the cost
  • ·Isolation valves and the heating system must be operational
  • ·Radiators, valves and boiler must be free of obstructions

Our full terms & conditions apply to all work.

07939249039Book now