01
Leak Detection & Assessment
We use advanced tools to locate refrigerant leaks anywhere in your system.
Gas Recharge & Leak Repairs
Air Conditioning Gas Recharge & Leak Repairs in London
Safe, legal, and environmentally responsible AC re-gassing by certified professionals.
At Ninja Air Conditioning, we specialise in safe and compliant gas leak detection, repair, and refrigerant recharge services for all types of air conditioning systems in London.
Whether your system has lost performance, is blowing warm air, or is showing error codes, we'll locate the issue, repair it properly, and restore your comfort — the right way.
- F-Gas registered engineers
- Advanced leak detection
- Nitrogen pressure testing
- Compliance reporting
Need an AC technician?
Call 020 3576 5825Leak Detection
System Repair
Pressure Testing
Pipework Flushing
Re-Gassing
Compliance Reports
Environmentally Safe
Why Choose Us
Why Choose Ninja Air Conditioning?
An efficient AC is a safe, compliant AC. With over 15 years across Greater London and a strict environmental commitment, we're the trusted choice for refrigerant work.
15+ years of experience
Hands-on with all major AC brands and system types.
F-Gas certified engineers
Fully insured and operating under strict environmental compliance.
Environmentally responsible
All refrigerant use is logged in line with UK F-Gas regulations.
Transparent pricing
Honest quotes with no hidden charges — full transparency.
Fast response
Quick appointments across all London boroughs.
Prompt, polite service
Friendly engineers who respect your property and time.
Our Safe & Certified Process
Our Safe & Certified Process
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System Repair
Damaged coils, joints, or valves are professionally repaired or replaced by certified engineers.
03
Pressure & Nitrogen Testing
The system is pressure-tested with nitrogen to ensure all leaks are fully fixed before re-gassing.
04
Pipework Flushing
We remove moisture and contaminants to protect your new refrigerant charge.
05
Re-Gassing & System Rebalance
Once confirmed leak-free, we recharge your AC with the correct refrigerant per manufacturer spec.
06
Compliance Reporting
All refrigerant use is logged in line with UK F-Gas regulations for full traceability.
Warning Signs
Signs You May Need a Gas Recharge
Your system isn't cooling like it used to, outdoor pipes are freezing, error codes appear, you hear unusual noises, or airflow feels weak or inconsistent.
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Reduced Cooling
- 02
Frozen Pipework
- 03
Error Codes
- 04
Unusual Noises
- 05
Weak Airflow
- 06
Warm Air Output
- 07
Sudden Shutdowns
Trusted Brands
Brands We Install
Not sure which brand is right for your property? Our engineers can recommend the most suitable system for your room size, usage, budget, and long-term energy efficiency.
Areas Covered
Trusted Across London & Beyond
We've helped clients in Croydon, Barnet, Newham, Ealing, Enfield, Brent, Kingston, Richmond, and Guildford stay cool with expert air conditioning services across London. Whether you're in a high-rise apartment or a suburban family home, we've got you covered.
We understand London homes, shops, and offices, and we tailor every system accordingly.
Areas We Cover:
- Enfield
- Croydon
- Newham
- Brent
- Ealing
- Barnet
- Wandsworth
- Tower Hamlets
- Hillingdon
- Kingston upon Thames
- Redbridge
- Guildford
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Learn moreGet Started
Need an AC Gas Recharge or Leak Repair?
Get safe, F-Gas certified recharge and leak repair from Ninja Air Conditioning. Call now on 020 3576 5825 or book an AC technician online.