What is Power Flushing?
Power flushing uses specialized equipment to force water and cleaning chemicals through your underfloor heating system at high velocity. This removes built-up sludge, rust, limescale and debris that accumulates over time, restricting water flow and reducing heating efficiency.
High-Velocity Cleaning
Powerful water flow dislodges stubborn deposits from pipe walls
Chemical Treatment
Specialist chemicals break down sludge and prevent future buildup
Complete Flush
Every circuit is individually flushed until water runs clear
Signs Your System Needs Power Flushing
Slow Heating
System takes much longer to warm up than it used to
Cold Spots
Uneven heating with some areas staying cold
Noisy System
Gurgling, banging or kettling sounds from pipes
Dirty Water
Brown or black water when bleeding the system
Benefits of Power Flushing
Improved Efficiency
Clean pipes allow water to flow freely, heating your home faster with less energy.
Lower Energy Bills
A clean system works more efficiently, reducing your heating costs significantly.
Extended System Life
Removing corrosive sludge prevents damage to pumps, valves and pipes.
Even Heating
Eliminate cold spots and ensure consistent warmth across all zones.
Quieter Operation
Remove the debris causing banging, gurgling and kettling noises.
Prevent Breakdowns
Regular flushing prevents blockages that can cause system failures.
Our Power Flushing Process
System Assessment
We assess your system condition and take water samples to determine contamination level.
Equipment Setup
Connect our power flushing machine to your manifold and add cleaning chemicals.
Circuit Flushing
Each underfloor heating circuit is individually flushed until water runs clear.
Protection & Test
Add inhibitor to prevent future corrosion, then pressure test the system.
Related Services
Explore our other underfloor heating services
UFH Repairs
Expert diagnosis and repair for all underfloor heating systems
Learn moreUFH Installation
Professional installation of electric and water-based systems
Learn moreUFH Maintenance
Annual servicing to keep your system running efficiently
Learn moreThermostat Controls
Smart thermostats and zone control installation
Learn moreIs Your System Due a Power Flush?
We recommend power flushing every 5-6 years, or sooner if you notice any warning signs. Book your power flush today.
Frequently Asked Questions
Underfloor heating power flush: common questions
- How much does underfloor heating power flush cost?
- Underfloor heating power flush from londonhvacpro is charged from £120+VAT per hour with a one-hour minimum and no call-out fee. Any parts are quoted in writing before work starts.
- How quickly can you attend for underfloor heating power flush?
- We offer same-day attendance and 24/7 emergency callout across London and the M25. Call 07427 826446 to book an engineer for underfloor heating power flush.
- Are your engineers certified for underfloor heating power flush?
- Yes. All refrigeration and air conditioning work is carried out by F-Gas certified engineers in line with the F-Gas Regulations, with every visit documented.