Professional Power Flushing Service for Central Heating
Over time, your central heating system accumulates sludge, rust, and debris that reduces efficiency, causes cold radiators, and drives up energy bills. Power flushing is a deep clean that flushes out these contaminants, restoring your heating system to peak performance and extending the life of your boiler and radiators.
- Gas Safe registered and fully insured
- DBS-checked engineers
- Emergency callout available 24/7
- Price agreed before work starts
Mon–Fri 8:00–17:30 · Emergency callout available 24/7
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What this includes
- Deep clean of boiler, pipes, radiators and heating system
- Removal of accumulated sludge, rust, and iron oxide particles
- Chemical treatment to dissolve blockages and corrosion
- Addition of corrosion inhibitor to prevent future build-up
- System testing and performance verification
- Installation of magnetic filters (optional) to protect against future debris
Worth knowing first
Some of this may save you a callout entirely. We would rather tell you than not.
How power flushing works
Our engineer will drain your system and connect a specialist power flushing machine. Cleaning chemicals are circulated through your boiler, pipes and radiators to dislodge built-up sludge and debris. The system is then rinsed multiple times with fresh water until it runs clear. Finally, we add a corrosion inhibitor to protect your system going forward. The whole process typically takes 5-8 hours.
Why it matters for new boilers
Modern high-efficiency boilers are sensitive to debris and sludge. Boiler manufacturers recommend power flushing before installation to protect your warranty. Without a clean system, accumulated debris can damage new boiler components and void your warranty. This investment protects your new boiler and ensures optimal performance from day one.
Immediate benefits you'll notice
Even heat distribution throughout your home. Quieter, more efficient boiler operation. Faster radiator warm-up times. Lower energy bills from improved system efficiency. Reduced risk of costly breakdowns and repairs.
Common questions
How often should I power flush my central heating?
For most homes, power flushing every 5-6 years is sufficient. Older systems or those with a history of problems may benefit from more frequent flushing. Our engineers can assess your system and recommend a schedule based on your specific situation.
Is power flushing really necessary before a new boiler?
Yes. Boiler manufacturers include power flushing in warranty terms because debris in old systems can damage new, high-efficiency boilers. Skipping this step risks voiding your warranty and damaging your new investment. It's a small cost that protects a large expense.
Will power flushing damage my heating system?
No. Power flushing is performed by qualified engineers using tested protocols. Our team uses specialist equipment and chemicals specifically designed for central heating systems. The process is safe and won't damage radiators, pipes or boiler components.
How long does a power flush take?
Most power flushes take between 5-8 hours depending on your system size and condition. We'll give you a realistic timeframe during your free survey, and work efficiently to minimise disruption to your day.
What's the difference between flushing and power flushing?
Standard flushing uses gravity to drain water through your system. Power flushing uses high-pressure equipment to force water through pipes and radiators, dislodging stubborn sludge and debris that gravity alone can't remove. Power flushing is much more effective for heavily contaminated systems.
Can I add a magnetic filter to my system?
Yes. We can install a magnetic heating filter on the same day as your power flush. This device captures remaining particles and prevents future sludge build-up, extending the time until your next flush and protecting your boiler long-term.
We also handle
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Emergency Plumbing
Burst pipes, major leaks and no water. We take calls around the clock and get an engineer moving.
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Boiler Repair
No heat, no hot water, or a boiler locked out on a fault code. Diagnosed first, then fixed.
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Boiler Service
The annual check that keeps a boiler safe, efficient and inside its warranty terms.
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Boiler Installation
A new boiler sized for the property, fitted properly, with the price agreed first.
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Boiler Replacement
Replacing a boiler that has reached the end, with a straight answer on whether it has.
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Drain Unblocking
Sinks, toilets and outside drains cleared with proper equipment, not a bottle of chemicals.
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Leak Detection
Hidden leaks traced with acoustic and thermal equipment, before floors come up.
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Bathroom Installation
A single fixture swap through to a full strip-out and refit, priced up front.
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Toilet Installation
A new toilet fitted, an old one swapped, or a WC moved to somewhere it has never been.
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General Plumbing
Taps, toilets, radiators and pipework. The jobs that never quite get done.
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Commercial Plumbing
Offices, restaurants, retail and blocks of flats, worked around your opening hours.
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Gas Safety Certificates
Landlord gas safety certificates issued by a Gas Safe registered engineer, with the paperwork sent the same day.
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CCTV Drain Surveys
A camera down the drain shows what is actually wrong, rather than guessing from what keeps happening above ground.
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Drain Repairs
A drain that is actually broken, not just blocked — repaired by digging it up or, where the run allows, without digging at all.
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Wet Rooms & Walk-In Showers
Level-access showers and full wet rooms, with the tanking and falls that decide whether it leaks in five years or never.
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Air Conditioning Repair
A system that has stopped cooling, is leaking indoors, or is tripping the breaker — diagnosed before anything is quoted.
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Air Conditioning Maintenance
Annual maintenance that keeps a system cooling efficiently and catches a refrigerant leak before it becomes a breakdown.
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Air Conditioning Installation
Split and multi-split air conditioning, sized and sited properly, fitted by F-Gas registered engineers.
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Air Conditioning Replacement
Replacing a system that has reached the end — including old units still running a refrigerant that can no longer be topped up.
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Need power flushing in London?
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