Air Lock Removal & System BleedingLondon & Surrounding Areas
Professional air lock diagnosis and removal for underfloor heating systems. Restore full circulation and eliminate cold spots.
What is an Air Lock?
An air lock occurs when air becomes trapped in your underfloor heating pipes, preventing proper water circulation. This is one of the most common causes of cold spots and uneven heating. Unlike radiators, underfloor heating systems are much harder to bleed due to the length and layout of the pipes.
Cold Spots
Areas of your floor that stay cold while others heat normally
Gurgling Sounds
Air bubbles moving through pipes create distinctive noises
Slow Heating
System takes much longer than usual to reach temperature
Common Causes of Air Locks
System Repairs
Air enters when pipes are cut or components replaced
Low Pressure
System pressure drop allows air to be drawn in
Poor Installation
Incorrect filling or commissioning during installation
Microbubbles
Air released from water as it heats up over time
Our Air Lock Removal Process
System Assessment
We check flow rates, pressures, and identify which circuits are affected by air locks.
Manifold Bleeding
Systematic bleeding of each circuit at the manifold to release trapped air.
Power Flushing
If needed, we use power flushing equipment to force stubborn air out of the system.
Pressure Test
Final pressure test and system check to ensure all air has been removed.
Why Professional Air Lock Removal?
Underfloor heating systems have multiple long circuits that are difficult to bleed
Improper bleeding can introduce more air or damage components
Professional equipment ensures complete air removal
We identify and fix the root cause to prevent recurrence
Pressure testing confirms the system is fully operational
Warranty-backed work with guaranteed results
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 moreCold Spots on Your Floor?
Air locks are a common problem with a straightforward solution. Our engineers can diagnose and remove air locks same-day.