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Gas Safe Reg: 123456
Trustpilot 4.9★
Clear sludge and debris from your central heating system with a professional power flush, carried out by Gas Safe registered engineers across Lewisham — fixed price agreed before any work starts.
SE4
SE6
SE8
SE13
SE23
🔒 No obligation. Fixed price confirmed before any work starts.
Radiators cold at the bottom or in patches, even when fully bled, usually indicate sludge build-up.
Radiators cold at the bottom or in patches, even when fully bled, usually indicate sludge build-up.
Radiators taking noticeably longer than they used to reach full temperature.
Unusual noises from the boiler can be caused by debris circulating through the system.
A system working harder than it should to heat your home often means higher energy costs.
A thorough clean of your entire heating system, restoring efficient circulation.
We check radiators, boiler and pipework to confirm a power flush is the right solution.
A specialist pump forces high-flow water and cleaning chemicals through the system.
Every radiator is flushed individually to ensure sludge is fully cleared.
Corrosion inhibitor added to protect the system going forward, followed by a full function test.
A power flush restores your heating system to working efficiently across every radiator.
No more cold spots — every radiator heats evenly, top to bottom.
A cleaner system runs more efficiently, often reducing the energy needed to heat your home.
Removing sludge reduces strain on the boiler and pump, helping them last longer.
Banging and gurgling noises caused by circulating debris are eliminated.
Fixed prices agreed before we start — no call-out charge, no hidden extras.
Fixed Price
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A thorough job that clears sludge properly, not just a quick system-wide rinse.
Reg. No. 123456 — for any wider boiler or heating work identified during the flush.
The price agreed before we start is the price you pay.
All work across Lewisham carries our written workmanship guarantee.
Based in and around South East London for fast scheduling.
Full insurance cover on every job.
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“Radiators were cold at the bottom for months. Power flush sorted it completely, heating up so much faster now.”
“Boiler had started making a knocking sound. Flush cleared it up entirely, no more noise.”
“Booked ahead of a new boiler install as recommended. Engineer explained everything clearly, tidy job.”
A standard system with up to 8 radiators starts from £280, a larger house system from £450, and a larger or high radiator count system from £650. All prices are fixed and agreed before work starts.
Most standard systems take 3–4 hours, with larger systems taking longer depending on the number of radiators.
It's often recommended, particularly on older systems, to clear sludge and debris that could otherwise damage a new boiler. Your engineer will advise whether it's needed for your system.
It resolves most issues caused by sludge and debris build-up. If a radiator issue is caused by a faulty valve or trapped air instead, your engineer will identify this during the assessment and advise on the right fix.
We cover the whole borough, including SE4, SE6, SE8, SE13, SE23 and SE26 — from Brockley and Deptford through to Catford, Hither Green, Forest Hill and Sydenham
Fixed price agreed before we start, Gas Safe registered engineers, 12-month guarantee.
We also cover these neighbouring boroughs — same fixed prices, same-day availability.