Power Flush London Specialists
Better heating. Less guesswork.
Cold radiators, black water when you bleed them, a noisy boiler or heating that is slow to warm up? We diagnose first, then recommend the right solution. If your system needs a power flush, we will explain the work clearly and confirm the agreed work and price before anything begins.
I need help with
Cold radiators or black water
Tell us what your heating is doing and we will explain what it usually means.
Symptom checker
Answer a few questions and get an honest read in under a minute.
What it costs
What affects the price, what is included, and what gets quoted separately.
A new boiler going in soon
Cleaning the system first, and the paperwork that goes with it.
Get a clear quote
Tell us about your system and we will come back with an honest price.
Book a call back
No obligation. Tell us when suits and we will call you back to talk it through.
No pressure to flush if it is not the right fix.
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See the work behind a power flush
Photos from heating systems across London: the checks we run first, the sludge and black water we find, the debris caught in magnetic filters, and the clean water a system runs on afterwards.
Not sure whether your system needs a flush? Try the symptom checker, or just call us.
Is your heating showing any of these signs?
Cold radiators
Some radiators stay cold at the bottom or do not heat properly.
Black radiator water
Sludge and debris circulating in your heating system.
Noisy boiler
Banging, kettling or gurgling noises from the system.
Slow heating
Takes too long to heat up or doesn’t stay warm.
Not sure what the issue is?
Try our quick symptom checker, or just call us.
New boiler prep
Prepare your system before a new boiler is fitted.
Not sure if you even need a power flush?
Answer a few quick questions about your radiators, water and heating, and get an honest first read before you ask anyone for a quote.
Open the symptom checkerWe diagnose first.
Flush only where required.
Before we flush anything, we test, inspect and explain so you get the right solution for your heating system, even when that solution is not a power flush.
Worried about mess or access? See how we protect your home during a power flush before work begins.
Thorough diagnosis
We check pressure, flow, radiators and boiler behaviour to find the real cause.
Honest recommendations
If a filter, balancing or repair is the better fix, we say so. No upselling.
Workmanship standards
Careful, methodical work by experienced engineers, and a tidy finish.
Shift the sludge.
Look after the system.
When a flush is the right fix, we clean with professional-grade kit chosen to move sludge and magnetite without forcing your system.
- Kamco Clearflow CF90 – instant flow direction reversal
- Kamco magnetic filter – catches black iron oxide as it circulates, so it is not pushed back through the boiler
- Sentinel X800 – fast-acting cleaner for sludge and corrosion deposits
After cleaning, we add corrosion inhibitor, or recommend the right alternative, to help stop new sludge forming.
See the power flushing equipment and chemicals we use, explained.
Specialist heating cleaning services
Quick routes to the main services and support pages.
Power flushing
Deep clean for sludge-affected systems.
System cleaning
Cleaning and protection options.
Chemical flush
A gentler cleaning option.
Magnetic filters
Capture sludge and protect the boiler.
Inhibitor
Protect against future corrosion.
Radiator balancing
Even heat across radiators.
Health check
Find the real heating issue.
New boiler prep
System cleaning before installation.
A clear quote before agreed work begins
Every system is different. Price depends on radiator count, system condition, access and what the system needs. We confirm the agreed work and price before starting. If further cleaning or extra work is needed after the first flush, we explain it clearly and quote separately before doing anything more.
Not sure if a quote is fair? Read our power flush quote checklist.
- Clear price before agreed work
- Professional equipment and suitable chemicals
- Diagnosis-led, never flush-by-default
Covering London, borough by borough
We are one specialist team working right across London, not a chain of local offices. Choose your area for local heating context and the issues we see most.
Expert guides and tips
Guides are written to help you decide before you spend.
What happens during a power flush
Is power flushing a scam?
How often should a power flush be done?
Cheap power flush prices: what is missing?
Power flush for landlords between tenancies
Told you need a flush before boiler work?
Get your heating ready for winter
Popular power flush questions
How our power flush process works
Get in touch
Tell us the issue and book a convenient appointment.
We diagnose
We test and inspect to find the real problem first.
Flush, where required
If a flush is the right fix, we deep clean the system.
System protection
We add inhibitor, or recommend the right alternative.
Power flush questions, answered
What is a power flush and what does it do?
How do I know if I actually need one?
How much does a power flush cost in London?
Do you provide a power flush certificate or completion record?
Which areas of London do you cover?
Will a power flush damage an older system?
Do you work with landlords and managing agents?
Ready for better heating?
Book a diagnosis and get a clear quote, with no pressure to flush if it is not the right fix.
