Boiler installation
From £1,999 fitted
Power Flushing in Birmingham
A power flush costs from £550 for a system of up to 10 radiators. It clears magnetite sludge and scale from radiators, pipework and the boiler heat exchanger using a pumped flushing machine and chemicals. You need one if radiators are cold at the bottom, the boiler is noisy or kettling, or you are fitting a new boiler onto old pipework.
Request a quote
Four details and we will get back to you to arrange a time. Prefer to talk? Call 07413 385767.
Power flush from £550 for up to 10 radiators. Larger systems are quoted on site.
No travel charge within 10 miles of B20 2JS. Further out, £2 per mile may apply — always agreed before anything is booked. Full price list
Smell gas now? Do not use this form or wait for a reply. Call the National Gas Emergency Service free on 0800 111 999 (24 hours). If you are using a mobile, make the call from outside. Open doors and windows, do not switch electrics on or off, do not smoke or use naked flames, and turn the gas off at the meter if it is safe to do so, unless the meter is in a cellar or basement. Once the supply has been made safe, we can trace and repair the fault.
Do you actually need one?
Power flushing is oversold in this trade. Here are the honest signs that you do need one:
- Radiators hot at the top, cold at the bottom, across more than one room
- Black water when you bleed a radiator
- Some radiators never heat up while others are fine
- Banging, kettling or gurgling from the boiler
- Repeated pump failures or a boiler locking out on overheat
- You are fitting a new boiler onto pipework more than ten years old
And when you probably do not: one cold radiator (that is usually balancing or a stuck TRV pin), a radiator cold at the top (that is air — bleed it), or a system that a chemical clean and a new magnetic filter would sort for a third of the price. We will tell you which camp you are in.
What the process involves
A flushing machine is connected to the system and pushes water through at high volume but low pressure, reversing direction to shift debris that a normal circulation would never dislodge. Cleaning chemicals and a sludge remover go in, each radiator is isolated and worked individually, agitation is applied to stubborn ones, and the system is dumped and refilled until the water runs clear. Finally the system is dosed with corrosion inhibitor.
Allow most of a day for an average three-bed house. The system will be off during that time.
Fit a magnetic filter afterwards
A power flush cleans what is already there; a magnetic filter stops it coming back. We supply and fit one for £320, and it is the single best £320 you can spend on a heating system. Every new boiler we install includes one as standard.
Boiler warranties
Manufacturers require the system to be cleaned to BS 7593 standards when a new boiler goes in. If your old system is heavily contaminated and we install without cleaning it, your warranty claim can be refused later. This is why we sometimes insist on a flush before an installation — not as an upsell, but because the alternative is you carrying the risk.
Prices
| Job | Price |
|---|---|
| Power flush, up to 10 radiators | from £550 |
| Supply and fit magnetic filter | £320 |
| Chemical clean and inhibitor dose | Quoted on site |
| Systems over 10 radiators | Quoted on site |
The magnetic filter price is the price for the job as described. The "from" price and anything marked "quoted" are starting points, confirmed with you before any work starts. No travel charge within 10 miles of B20 2JS; further out, £2 per mile may apply, agreed before booking. How our prices work.
What it costs
Updated Sept 2026From £550
Power flush from £550 for up to 10 radiators. Larger systems are quoted on site.
No travel charge within 10 miles of B20 2JS. Further out, £2 per mile may apply — always agreed before anything is booked.
Power flushing
From £550, up to 10 radiatorsCalloutEarliest available visit — ask when you call
OfficeMon–Fri 8–5.30
Emergency24/7
Gas Safe reg.594385
Coverage
From B20 2JSStandard radius10 miles
Installationsup to 50 miles
TownsB'ham, Sandwell, Walsall, Dudley, Solihull
Answers
Power flushing: common questions
How much does a power flush cost in Birmingham?
From £550 for a system of up to 10 radiators. Larger systems are quoted individually. A magnetic filter, which we strongly recommend fitting at the same time, is £320.
How long does a power flush take?
Most of a working day for a typical three-bedroom house. Badly contaminated systems can take longer.
Will a power flush fix one cold radiator?
Usually not. A single cold radiator is more often a stuck thermostatic valve pin or a balancing issue, both far cheaper to fix. We check that first.
How often is a power flush needed?
A well-inhibited system with a magnetic filter should not need flushing again for many years. Systems with no inhibitor and no filter tend to need attention every 5–8 years.
Can a power flush damage old pipework?
On very old systems with corroded steel pipe, flushing can occasionally reveal an existing weak point. We assess the system's condition first and will tell you if a gentler chemical clean is the safer option.
Local
Power flushing near you
We cover Birmingham and the surrounding towns. Pick your area for local detail.
- Power flushing in BirminghamB1–B48
- Power flushing in Handsworth WoodB20, B21
- Power flushing in Perry BarrB42, B44
- Power flushing in Great BarrB43, B44
- Power flushing in ErdingtonB23, B24
- Power flushing in Sutton ColdfieldB72–B76
- Power flushing in EdgbastonB15, B16
- Power flushing in HarborneB17, B32
- Power flushing in Moseley & Kings HeathB13, B14
- Power flushing in Selly OakB29, B30
Also
Other services
Boiler repair
£99 in office hours: diagnosis + first hour
Boiler servicing
From £95
Gas safety certificate (CP12)
£90 (boiler + cooker)
24/7 emergency callout
£99 (Mon–Fri 8am–5.30pm)
Gas leak detection
From £99 in office hours
Cold radiators or a sludged system? Ask for a quote.
We will tell you honestly when we can get to you, and agree the price before any work goes ahead.