


At Mark Abraham Gas, our professional power flushing services are designed to thoroughly clean your central heating system, restore circulation, improve productivity and extend the lifespan of your boiler and radiators.
Over 30 Years’ Experience
Fully Qualified Engineers
Gas Safe & OFTEC Registered
Honest, Reliable & Professional
Emergency Callout Available
Excellent Customer Reviews
Sludge and corrosion gradually build over time, contaminating your heating system. Many homeowners are unaware of this until the performance of their boiler or radiators become negatively affected.
This unwanted accumulation restricts water flow and reduces heating efficiency, causing poor performance of your heating system.
A professional power flush can restore your system without the expense of replacing components unnecessarily.

1. Get in Touch
Call us or request a quote online and tell us what you need.
2. We Assess
We visit your property to assess your boiler needs and provide expert advice.
3. We Get to Work
Our engineers carry out the work to the highest standards with minimal disruption.
4. You're Covered
Enjoy reliable heating and complete peace of mind all year round.
Reviving Your Central Heating System
Central heating systems naturally accumulate sludge, rust, limescale and other debris. This can restrict water flow and reduce the efficiency of your boiler and radiators. If left untreated, the build-up can lead to cold spots, noisy pipework, increased energy bills and costly boiler breakdowns.
At Mark Abraham Gas, our professional power flushing services are designed to thoroughly clean your central heating system, restore circulation, improve productivity and extend the lifespan of your boiler and radiators.
Benefits of Power Flushing
Improve Efficiency, Consistency and Comfort
A professional power flushed heating system transforms the performance of your central heating positively by removing sludge.
It allows hot water to circulate freely throughout the system, heating your home quicker and reliably while reducing unnecessary strain on your boiler.
Benefits Include:
- Faster radiator warm-up times
- Lower energy bills
- Improved boiler efficiency
- Fewer breakdowns
- Even heat distribution throughout your home
- Reduced boiler noise
- Extended boiler lifespan
- Improved radiator performance
- Better hot water circulation
- Reduced risk of pump and valve failure
- Protection for newly installed boilers
- Improved overall heating comfort

The Power Flushing Process
A Thorough Clean from Start to Finish
Our experienced engineers use specialist power flushing equipment. These connect directly to your central heating system.
We safely remove years of accumulated sludge, rust and debris by using high-velocity, low-pressure water combined with professional cleaning chemicals that circulate throughout the system.
At Mark Abraham Gas, we clean each radiator individually to ensure contaminants are completely removed before the system is thoroughly flushed with clean water. A corrosion inhibitor is added to protect your heating system from future sludge build-up.
Our Power Flushing Process:
- Initial System Inspection
We carefully assess the condition of your heating system, identify any existing faults and determine whether power flushing is the most suitable solution. - Connect Specialist Equipment
Our power flushing machine is connected safely to your central heating system. - Circulate Cleaning Chemicals
Professional cleaning chemicals are introduced to break down sludge, corrosion and other deposits. - Clean Each Radiator Individually
We flush every radiator individually to maximise debris removal and restore proper water circulation. - Flush the Entire Heating System
The complete heating system is thoroughly flushed using clean water until it runs clear. - Add Corrosion Inhibitor
A high-quality inhibitor is added to help prevent future corrosion and sludge formation. - Final Testing
We balance the heating system, test boiler performance and ensure every radiator is heating correctly before completion.
Common Signs Your System Needs a Power Flush:
- Radiator cold at the bottom
- Some radiators not heating up
- Boiler making banging or kettling noises
- Heating takes longer to warm the house
- Frequent boiler breakdowns
- Dirty or black water when bleeding radiators
- Pump failures
- Thermostatic radiator valves sticking
- Poor hot water circulation
- Boiler regularly overheating
- Increased energy bills
- New boiler being installed onto an older heating system
Why Does It Matter?
- Ignoring sludge build-up leads to reduced efficiency, higher heating costs and premature failure of expensive components such as boilers, pumps and valves.
- A power flush restores circulation, allowing positive operation of your heating system.
Is Power Flushing Worth It?
- It is for many homeowners.
- A power flush is one of the most cost-effective ways to restore an ageing heating system without replacing radiators or pipework.
- It significantly improves efficiency, reduces running costs and protects your investment in your central heating system for years to come.
