How much does an air con regas cost in London?
Air con regas starts from £120+VAT. The final price depends on the refrigerant type, required charge, access and whether leak detection or repair is needed before refilling.
Commercial AC · Chillers · Refrigeration Plant
Air Con Regas & Refrigeration Gas Refill
Air con regas restores the correct refrigerant charge after leak testing and repair. Our F-Gas certified engineers refill commercial AC units, chillers and refrigeration plant across London and the M25 from £120+VAT.
F-Gas certified engineersLeak testing before rechargeAC, chillers and refrigerationMain-contractor support
What our commercial refrigerant service covers
We provide refrigerant diagnosis and recharge work for split and multi-split air conditioning, VRF and VRV systems, packaged units, process chillers, comfort-cooling chillers, cold rooms, freezer rooms, display cabinets and other commercial refrigeration plant. A refill is not treated as a routine consumable: a correctly sealed circuit should retain its charge, so a low-gas condition needs investigation rather than repeated topping up.
Common air-conditioning refrigerants include R32, R410A and R407C. Commercial refrigeration plant may use R404A, R448A or R449A. Availability, suitability and lawful handling depend on the equipment, existing charge and current phase-down requirements. We identify the refrigerant from the data plate and records, check whether the system can remain on its existing gas and explain the practical options before work begins.
All refrigerant handling is carried out by F-Gas certified engineers in accordance with the Fluorinated Greenhouse Gases Regulations 2014. Recovery, evacuation, charging and records are completed as the job requires. We do not mix incompatible gases or use automotive terminology and methods on fixed commercial cooling systems.
Signs your system may need leak testing and a regas
Reduced cooling duty
Supply air or leaving-water temperature no longer reaches set point, even though fans and pumps continue to run.
Low-pressure faults
A chiller or condensing unit repeatedly trips on low suction pressure or displays a refrigerant-related alarm.
Ice or frost
Ice forms on the evaporator, pipework or indoor coil because pressures, airflow or system charge are outside design conditions.
Long running times
The compressor runs for longer, energy use rises and occupied rooms, cold rooms or cabinets recover slowly.
Bubbles or unusual readings
Sight-glass condition, superheat, subcooling or pressure readings indicate a possible shortage after other causes are checked.
Oil staining
Oil residue around joints, valves or coils can indicate a refrigerant leak requiring proper confirmation and repair.
These symptoms do not prove that refrigerant is low. Dirty coils, failed fans, blocked filters, sensor faults, expansion-device problems and incorrect controls can produce similar effects. Our engineer checks the wider system before recommending an AC refill or chiller regas.
Our air con and chiller regas process
- 1
Site and equipment review
We confirm the application, make, model, refrigerant, recorded charge and fault history, then assess access and operational risks.
- 2
System diagnosis
Temperatures, pressures, airflow, controls and electrical operation are checked so low refrigerant is not confused with another plant fault.
- 3
Leak detection and repair
Where a shortage is indicated, we use appropriate leak-detection methods, agree repair scope and complete pressure testing where required.
- 4
Evacuation and measured recharge
The circuit is evacuated and charged with the correct refrigerant to the manufacturer’s specified weight or commissioning method.
- 5
Commissioning and records
We run the plant, verify operating readings and provide a clear service report with refrigerant and F-Gas record details.
London and M25 coverage
We attend commercial premises across Central, North, South, East and West London and around the M25. If you are searching for a refrigeration engineer near me, provide the postcode, equipment details and fault information so we can allocate an engineer with the appropriate refrigerant capability.
Planned and reactive attendance is available. Refrigerant availability, safe access and repair requirements can affect whether recharge work is completed during the first visit.
Subcontractor and main-contractor support
We welcome subcontract packages from HVAC contractors, mechanical contractors, facilities-management providers and principal contractors. Our engineers can attend for a defined AC refill, chiller regas, pressure test, leak repair or commissioning task while coordinating with the site team and following the agreed permit and reporting process.
Equipment schedules, refrigerant quantities and access information help us price accurately. Related support is available through our chiller servicing and maintenance, commercial air conditioning service and commercial refrigeration service teams.
Air con regas pricing
Air con regas from £120 plus VATFrom £120+VAT
The starting price covers a straightforward commercial assessment and regas where the equipment, access and refrigerant requirement fit that scope. Refrigerant quantity, recovery, nitrogen pressure testing, leak detection, repairs, access equipment and replacement components can change the total. We confirm the chargeable scope before proceeding and do not represent a refill as a permanent repair when the circuit is leaking.
Air con regas and refrigeration refill FAQs
Which refrigerants can your engineers handle?
Our F-Gas certified engineers work with common air-conditioning refrigerants including R32, R410A and R407C, plus commercial refrigeration gases including R404A, R448A and R449A, subject to equipment and regulatory requirements.
Can you refill a chiller without repairing a leak?
Refrigerant should not be added repeatedly to a leaking system. We test the circuit, locate and repair identified leaks where practicable, pressure-test as required, evacuate the system and recharge it to the manufacturer’s specified weight.
Do you provide a refrigeration engineer near me?
We cover Central, North, South, East and West London, plus commercial sites around the M25. Attendance is subject to engineer availability and the refrigerant required for the plant.
Can you work as an HVAC subcontractor for a main contractor?
Yes. We support main contractors, facilities managers and mechanical contractors with scoped refrigerant work, site coordination, commissioning readings, F-Gas records and clear completion reports.
Book an F-Gas engineer
Send the site postcode, plant make and model, refrigerant shown on the data plate and any active fault code for a clear quotation.
Call 0208 935 5572