Weak cooling or heating
The unit runs for longer but cannot reach the selected room temperature.
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Air Con Refill & Regas London
Air con refill and regas for heat pumps, mini splits and AC units. F-Gas certified engineers across London. From £120+VAT.
F-Gas certified engineers
Appointments across London
Homes and commercial premises
Prices from £120+VAT
Google5/5 (547 reviews)
F-Gas Registered
7-Year Warranty
5,000+ Systems Installed
Air Con Refill and Regas: Direct Answer
Our air con refill service restores the correct refrigerant charge in heat pumps, mini splits and multi-split AC systems across London, following leak checks by F-Gas certified engineers. Prices start from £120+VAT.
Refrigerant circulates inside a sealed system, so a unit should not need routine topping up. A falling charge normally indicates a leak, an earlier commissioning error or refrigerant lost during repair work. We diagnose the reason before recharging.
What Our Air Con Regas Service Covers
We work on domestic and commercial air-to-air heat pumps, wall-mounted mini splits, cassette units, ducted systems and multi-split air conditioning. The visit includes initial fault checks, refrigerant identification, leak assessment, charging by weight where appropriate, operating-pressure checks and performance testing.
- Heat pump regas for air-to-air systems
- Mini split regas and performance testing
- Multi-split AC refrigerant charging
- Leak checks before refrigerant is added
- R32, R410A and R407C air conditioning refrigerants
- R404A, R448A and R449A refrigeration refrigerants
- F-Gas service records where required
- Residential and commercial systems
All refrigerant handling is carried out by F-Gas certified engineers in accordance with the Fluorinated Greenhouse Gases Regulations 2014, commonly known as the F-Gas Regulations 2014. We recover refrigerant responsibly and never vent it to the atmosphere.
Signs Your System May Need a Regas
Reduced cooling or heating is the most common symptom, but it does not always prove the charge is low. Dirty filters, blocked coils, failed fans, sensors and controls can produce similar problems. A qualified diagnosis avoids unnecessary refrigerant and expense.
Ice on pipework or coils
Low pressure or restricted airflow may cause frost and ice around the indoor coil or refrigerant lines.
Hissing or oily marks
A small leak can produce a faint sound or leave oil residue around joints, valves and damaged coils.
Recurring low-pressure faults
Modern systems may stop and display a fault code to protect the compressor from an unsafe operating condition.
Our Air Con Refill Process
1. Identify the fault
We confirm the symptoms, inspect the indoor and outdoor units, read fault codes and check temperatures, airflow and operating pressures. This establishes whether low refrigerant is the likely cause or whether another fault is reducing performance.
2. Leak test and pressure check
The circuit is checked for signs of leakage around flare joints, valves, coils and pipework. Where required, we use electronic detection and an appropriate pressure test. Any leak and repair recommendation is explained before charging begins.
3. Repair and prepare
Approved repairs are completed, the system is pressure-tested and a vacuum is pulled to remove air and moisture. We do not use refrigerant as a substitute for proper evacuation or charge a system with a known unresolved leak.
4. Recharge and test
The correct refrigerant is weighed in to the manufacturer's specification. We then run the system in heating and cooling modes where applicable, verify temperatures and pressures, and record the completed work for your service history.
London Coverage and Areas
Looking for an aircon refill near me? Our engineers attend homes, offices, shops, restaurants and server rooms across Central London and the wider capital. Coverage includes North, South, East and West London, the outer boroughs and many towns near the M25.
Air Con Refill Pricing — From £120+VAT
Air con refill and regas starts from £120+VAT. The exact quote reflects the refrigerant, charge quantity, system size, access and any leak detection or repair. Larger multi-split, VRF, heat pump and refrigeration systems may require more refrigerant and additional testing time.
We explain the findings and price before proceeding. Refrigerant is not added to a system with a known unrepaired leak. If repair is required, you receive a clear scope so you can make an informed decision.
Air Con Refill & Regas FAQs
How much does an air con refill cost in London?+
Our air con refill and regas service starts from £120+VAT. The final price depends on the refrigerant type, the charge required, access and whether leak detection or repair is needed. We confirm the cost before adding refrigerant.
Can you regas a mini split or air-to-air heat pump?+
Yes. We regas air-to-air heat pumps, single-room mini splits and multi-split AC systems from leading manufacturers. We check the data plate and commissioning information so the correct refrigerant and charge quantity are used.
Which refrigerants do you work with?+
For air conditioning and heat pumps, we commonly work with R32, R410A and R407C. For commercial refrigeration equipment, we also handle R404A, R448A and R449A. Refrigerant work is completed by F-Gas certified engineers.
Does low refrigerant always mean there is a leak?+
Usually, yes. Refrigerant runs in a sealed circuit and is not consumed like fuel. If the charge is low, we inspect the system for leaks and explain any repair needed before recharging it, rather than repeatedly topping up a faulty system.
Do you provide aircon refill near me across London?+
Yes. We cover all London boroughs and many locations around the M25, including Central, North, East, South and West London. Domestic and commercial appointments are available for heat pumps, mini splits, multi-splits and refrigeration systems.
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