Signs your system needs a flush
- Radiators cold at the bottom or in the middle
- Radiators that take a long time to warm up
- Black or brown water when you bleed a radiator
- A noisy boiler or pump
- Repeated boiler breakdowns
What we do
- High-flow chemical flush of the whole system
- Magnetic filter supplied and fitted
- Radiator balancing
- Thermostatic radiator valves (TRVs) supplied and fitted where needed
Why it matters
Magnetite sludge builds up inside older systems. It restricts circulation, makes radiators heat unevenly and can damage the boiler heat exchanger. A flush restores flow, and a magnetic filter afterwards catches new debris before it settles.
Questions
How much does a powerflush cost?
Powerflushing starts from £280. The price depends on the number of radiators and the condition of the system.
Will a powerflush fix cold radiators?
If the cause is sludge, usually yes. We will check first, because a stuck valve or trapped air can look the same and is cheaper to fix.