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Power Flushing

Power Flushing

Sludge, rust and debris flushed from your heating system — restore efficiency, quieten noisy pipes, and protect your boiler, with a fixed price agreed before we start.

This service at a glance

BOOKED

Appointments day or night

FIXED

Price agreed before work starts

12 MTH

Workmanship guarantee in writing

Over time, sludge, rust and debris build up inside radiators and pipework, blocking flow and making your boiler work harder than it needs to. A power flush forces a high-velocity cleaning fluid through the whole system, clearing the buildup so heat circulates properly again — protecting your boiler and cutting your bills.

WHAT IT SOLVES

  • Cold spots on radiators
  • Noisy, banging or gurgling pipes
  • Boiler working harder than it should
  • Discoloured or sludgy radiator water
  • Slow-heating radiators
  • Frequent boiler breakdowns
  • Uneven heat across the property
  • Preparation before a new boiler install

Book this job

Available 24/7. Fixed price agreed up front. Free call-out when you book — same-day call-out £69*.

Gas Safe registered · Fully insured · Guaranteed

Symptom Check

SIX SIGNS YOU NEED A POWER FLUSH

Keep an eye

COLD SPOTS ON RADIATORS

Cold patches, especially at the bottom, usually mean sludge buildup.

Urgency
Keep an eye

RADIATORS TAKE LONGER TO HEAT

Sludge slows circulation and delays warm-up time.

Urgency
Getting worse

NOISY CENTRAL HEATING

Banging or gurgling pipes point to debris restricting flow.

Urgency
Getting worse

DIRTY WATER WHEN BLEEDING

Black or discoloured water is a clear sign of internal buildup.

Urgency
Call now

BOILER BREAKING DOWN OFTEN

Sludge circulating back into the boiler causes repeat faults.

Urgency
Call now

INSTALLING A NEW BOILER

A flush before installation protects your new boiler from old system debris.

Urgency

How it works

How we clear your drain.

1

Call & diagnose

Tell us the symptoms on the phone — a real engineer talks you through likely causes.

2

Locate the blockage

On arrival we find exactly where and what it is, by camera if needed, and quote a fixed price.

3

Clear it on the spot

Rods, plungers or high-pressure jetting shift it — usually on the first visit.

4

Check & guarantee

We confirm it is flowing, tidy up, and leave you a written guarantee.

No surprises

What It Costs

Home assessment & quote

Free, no obligation

Single Radiator Flush

from £XX

One problem radiator cleared

Whole System Flush

from £XX

Full property flushed

Flush + Inhibitor Treatment

from £XX

Long-term protection added

Flush Before New Boiler

from £XX

System prepped for install

More from our team

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Swipe to explore

Areas we cover

All 32 London boroughs.

Tap any borough on the map to see the neighbourhoods our engineers reach. We cover every postcode across Greater London — day or night.

Tap a borough to see its areas

Barking Barnet Bexley Brent Bromley Camden Croydon Ealing Enfield Greenwich Hackney Haringey Harrow Havering Hillingdon Hounslow Kingston Lambeth Lewisham Merton Newham Redbridge Richmond Southwark Sutton Tower Hamlets Waltham F. Wandsworth Westminster
Finchley Hendon Edgware Mill Hill
Phone Call 020 8064 0422 Phone Drain Unblocking in Harrow

Good to know

Blocked drain questions

01 How do I know if I need a power flush?

Cold spots on radiators, noisy pipes, or dirty water when bleeding a radiator are the clearest signs — we can assess this on a visit.

Most whole-system flushes are completed in a day, depending on the number of radiators.

We provide a free assessment and quote, then a fixed price before any work starts.

Yes — written workmanship guarantee, fully insured engineers.

No — the process is controlled and designed to clear debris safely without damaging your system.

Every 5-6 years is typical, or before installing a new boiler onto an older system.

SLUDGY SYSTEM? LET'S FLUSH IT CLEAN.

Free quote, fixed price, restored heating efficiency — across every London borough.