Detecting refrigerant leaks in the branch pipes
Air Conditioners
Central AC Repair for Villas and Homes
Central AC repair for villas, homes and offices: leak detection, duct and unit cleaning, VRF board repair. Clear price first and a 6-month written warranty.
Agent Site is an independent repair center — not the manufacturer's authorized service or warranty provider.
A central AC is a single cooling system covering a whole villa, home or office, using concealed ducting, a VRF system (called VRV by Daikin) or fan coil units — and it is more complex to service than a split. In a central system one outdoor unit serves several indoor units or a whole duct network, so a single fault can stop cooling across the home at once. Our technicians work on central systems from many brands, including Carrier, LG, Samsung, Toshiba, Midea and Sharp. For malls, factories and commercial buildings, see the separate Central HVAC section of the site.
Why Central AC Service Is Not a Job for Just Any AC Technician
A central system is a single installation serving an entire building — which means one fault in the outdoor unit can shut down cooling for the whole villa or company at once. That is why servicing it takes technicians who understand load distribution, refrigerant pressures in the branch pipes, and programming of the central control units — not just a skilled split AC technician.
The most dangerous thing we see in the market: non-specialist teams treating a VRF system as if it were a large split unit. The result is refrigerant charged in the wrong amounts, a broken balance between the indoor units, and electricity bills that climb without anyone noticing. If you have a central system, always ask how much experience the team has with your specific type (VRF/VRV, ducted, or Fan Coil).
Periodic Maintenance Contracts for Villas and Facilities
For companies, restaurants, hotels and clinics, a sudden AC breakdown is not just an inconvenience — it means disrupted work and lost customers. A quarterly maintenance contract flips the equation from "repair after the disaster" to "prevent the disaster in the first place".
- A scheduled visit every 3 months: pressure checks, return-air filter cleaning, and drain line inspection
- A written condition report after every visit — full documentation for facility management
- The 16062 hotline answers calls 24 hours; visits run daily 9 AM–9 PM at the earliest available slot
- A longer system life and a steadier electricity bill — a clean system draws much less power
Signs your Central AC needs service
- Indoor units cool unevenly
- The outdoor compressor draws more electricity than expected
- Water dripping from the ceiling duct outlets
- A strong airflow noise from certain vents
- A musty smell from the duct outlets
- An error code on the central remote controller screen
- Cassette units do not move their louvers
Common technical faults
Faults we often meet when servicing this type.
- 01
Refrigerant leak at the main branch pipe joints
- 02
Clogged large return-air filter
- 03
Failure of the main outdoor PCB control board
- 04
A faulty expansion valve in one indoor unit
- 05
Damaged drain pump in the cassette units
- 06
Clogged main drain tray from dust and algae
Central AC: VRF or Concealed Ducted?
| VRF / VRV | Concealed Ducted | |
|---|---|---|
| How the system works | One outdoor unit feeds multiple indoor units with variable refrigerant flow | A single unit distributes cool air through ducts in the ceiling |
| Control | Each room/zone controls its own temperature independently | Roughly one uniform temperature for the whole space |
| Power consumption | The most economical — cools only the spaces actually in use | Higher — cools the whole space, even the empty parts |
| Appearance | Sleek cassette or concealed units | Completely hidden — only the air grilles show |
| Maintenance cost | Higher — electronics and sensors in every unit | Simpler — one central mechanical system |
| Best for | Villas and offices that need separate room-by-room control | Halls, shops and open-plan spaces |
There is also a third type, the fan coil: it runs on chilled water from a central chiller, gives each room its own control, and its upkeep centres on pumps, valves and filters — it is more common in large buildings. In every case, a site survey determines the system best suited to how you use the space before you spend a single pound.
Central AC repair services
Deep cleaning of all indoor units and ductwork
Replacing expansion valves, drain pumps and control boards
Quarterly preventive maintenance for villas and companies
Programming and configuring the centralized remote controllers
Installing new VRF and ducted systems after a site survey
AC fault guides
Fault guides that apply to this type — causes, safe checks and when to call a technician.
Central AC repair by brand
Pick your brand to see its common faults and error codes.
Central AC — frequently asked questions
One indoor unit is not cooling while the rest work — why?
First check the unit is on Cool, its filter is clean and whether the controller shows an error code. If all is fine, it is usually the expansion valve or the unit's sensor — a job for a technician.
How much does central AC maintenance for a villa cost?
The price is set after a technical inspection, because a central system differs from one villa to the next.
Do you offer periodic maintenance contracts for VRF systems?
Yes. Quarterly contracts include pressure checks, cleaning, filter replacement and a written condition report.
Do you also service chillers?
Yes — chiller servicing has its own page in the chillers section of the site.
What is the difference between concealed ducted and cassette units?
Concealed ducted: a unit above the false ceiling feeding ducts and grilles. Cassette: a square unit visible in the ceiling that blows air four ways.
Other AC types
Need a technician for your Central AC?
Inspection, a clear price before the repair, and a 6-month written warranty.