24/7 EMERGENCY
Burst pipe? Boiler down? No hot water? Engineers on call right now —
24/7 EMERGENCY
Burst pipe? Boiler down? No hot water? Engineers on call right now —
We power flush central heating systems across Kensington & Chelsea — clearing sludge and corrosion from radiators and pipework in period townhouses, mansion flats and extended properties. Fixed price, full system check, 12-month workmanship guarantee.
W8
W10
W11
SW3
SW5
SW7
SW10
Sludge and corrosion build up inside radiators and pipework over years, especially in older cast-iron systems common across the borough’s period properties. Here’s what to look out for.
A radiator that's cold at the bottom but warm at the top is a classic sign of sludge settling inside — extremely common in the original cast-iron radiator systems still running in many Notting Hill and Holland Park townhouses.
Banging, gurgling or knocking from the boiler or pipes often means sludge and debris are restricting flow and causing the pump or heat exchanger to work harder than it should.
Radiators taking longer to warm through, or cooling quickly after the heating switches off, points to reduced circulation from a partially blocked system.
Dark, murky or black water when bleeding a radiator is a clear sign of internal corrosion and sludge — particularly likely where original pipework has been running for decades without a flush.
A thorough flush of the entire system — every radiator, the boiler and all connecting pipework — using a high-flow pump and cleansing chemicals to break down and remove sludge.
We check every radiator, the boiler and pipework for signs of sludge, corrosion and restricted flow, and confirm a fixed price before starting.
A high-flow power flushing unit is connected to the system, with cleansing chemicals introduced to break down sludge and scale.
Every radiator is isolated and flushed in turn at high velocity, reversing flow where needed to dislodge trapped debris, until the water runs clear.
The system is refilled, dosed with corrosion inhibitor, and every radiator is checked for even heat before we finish and issue your 12-month guarantee.
Most underfloor heating faults come down to a handful of causes — we diagnose before recommending any work.
Cold spots caused by sludge are cleared, so radiators heat evenly from top to bottom.
Clearing blockages reduces the load on the pump and heat exchanger, cutting down on banging and gurgling noises.
A system free of sludge circulates heat more efficiently, so the boiler doesn't need to work as hard or run as long.
Removing corrosive sludge and re-dosing with inhibitor protects the boiler, pump and radiators from premature wear.
Cost depends on the number of radiators and the condition of the system. All prices confirmed before work begins — no call-out charge.
Full system flush, standard townhouse or flat
Larger townhouse, multiple floors
Large period property or house with extension/basement
Isolated cold-spot fix on one radiator
Boiler service, pressure check, radiator inspection
Fixed price policy: all prices confirmed before work begins — no call-out charge, no hidden extras, no Kensington & Chelsea premium. The price you approve is the price on the invoice.
Comfortable flushing original heating systems in period townhouses and mansion blocks without damaging ageing radiators or pipework.
Every radiator isolated and flushed individually, not just a bulk system pass — the thorough approach period properties with years of buildup usually need. down and protected from freezing.
Every flush is followed by a full re-dose of corrosion inhibitor to protect the system going forward.
The same fixed pricing applies whether you're in W11 Notting Hill or SW3 Chelsea. No area uplift, no call-out charge.
Over 260 power flushes and heating system jobs completed across Kensington & Chelsea — 4.9★ from local customers.
All power flushing work carries our 12-month workmanship guarantee, issued in writing before we leave.
Read all reviews on Trustpilot →
“Original cast-iron radiators in our Holland Park house, most of them cold at the bottom for years. The power flush took most of the day but every radiator heats evenly now, and the boiler’s noticeably quieter too.”
“Added two new radiators after a basement conversion and the whole system started making a horrible banging noise. Turned out the old pipework needed a flush — sorted in a day and completely silent since.”
“Mansion flat near South Kensington, black water every time we bled a radiator. They flushed the whole system, fitted a magnetic filter, and explained what to check going forward. Heating’s been far more even since.”
Cold spots (especially cold at the bottom, warm at the top), a noisy boiler, radiators that are slow to heat up, or dark water when bleeding a radiator are all signs of sludge buildup that a power flush will clear.
A power flush for up to 8 radiators starts from £380. For 9 to 15 radiators it starts from £520. Larger properties with 16 or more radiators start from £680. A single radiator flush starts from £95. All prices confirmed before work begins.
Yes, when carried out correctly. We assess the condition of the system first — very old or already-corroded pipework is flushed at a controlled pressure to clear sludge without causing damage.
Often, yes. Connecting new radiators to older existing pipework can disturb settled sludge and cause circulation or noise problems — flushing the whole system at the same time avoids this.
Most properties with up to 8 radiators take 4 to 6 hours. Larger townhouses with more radiators typically take a full day.
No. There is no call-out charge and no premium for any postcode within the borough — the same fixed prices apply whether you're in W11 or SW3.
Fixed price confirmed before we start. Full radiator-by-radiator flush with inhibitor included. 12-month guarantee. Same-day across W8, W10, W11, SW3, SW5, SW7 and SW10.
We also cover these neighbouring boroughs — same fixed prices, same-day availability.
