The Qualifications and Training Behind Our Senior Aircon Technicians
Choosing an aircon company in Hong Kong is about trusting qualified people with equipment that affects your safety, your air and your electricity bill. Here are the qualifications, certifications and registrations our senior technicians hold.

Why Qualifications Matter in Aircon Work
An air conditioner combines mains electricity, pressurised refrigerant and, in Hong Kong, awkward access at height. Each of those carries risk when handled by someone untrained.
Qualified technicians diagnose faults faster, protect your warranty and leave an installation that is safe and compliant.
At Proclean, our senior aircon technicians hold a combination of vocational qualifications, manufacturer certifications and government-recognised registrations. Credentials are available on request.
A credential is only useful if a client can check it. Ours can be verified before any major work begins.
The Qualifications Our Technicians Hold
Core training covers the technical disciplines of the trade, typically through programmes recognised by the Vocational Training Council or equivalent bodies.
Refrigerant Handling Is a Certified Skill
Refrigerant handling is regulated because poor practice harms both people and the environment. Our technicians are certified for refrigerant recovery, recycling and recharge.
Internationally, the benchmark is the US EPA's Section 608 technician certification, which sets out how refrigerants must be recovered and handled.
Low refrigerant always means a leak. A qualified technician finds and fixes the leak before recharging, so the problem does not return.

Our Credentials in Numbers
The training and oversight behind every AirconPro visit.
Want to Check Our Credentials?
Ask Before You Book
We share registration, licence and certification records on request for installation and commercial projects.
Factory Certifications from Major Aircon Brands
Brand training gives access to manufacturer diagnostic tools, service bulletins and warranty-compliant repair procedures.
| Brand | Typical Systems | Where You Find Them |
|---|---|---|
| 🔷 Daikin | Inverter split and commercial systems | Homes, offices and retail |
| 🔶 Mitsubishi Electric | VRF and multi-zone systems | Commercial and mixed-use buildings |
| 🔵 Panasonic | Split, cassette and ducted units | Residential and small commercial |
| 🔴 LG | Multi-split and cassette systems | Homes, shops and hospitality |
Registered Electrical Worker and Contractor Licensing
Registered Electrical Worker (REW) status is granted by the Electrical and Mechanical Services Department. It is the government's recognition that a person is qualified to carry out electrical work.
Proclean's senior management hold REW registration and supervise and sign off electrical installations and mains connections. The company also operates under an Electrical Contractor's Licence issued by the EMSD.
For new installations, plant room rewiring or multi-unit fit-outs, clients can and should ask for confirmation of both before work starts.

Continuous Professional Development
Aircon technology changes quickly, so qualifications earned years ago are not enough on their own.
Monthly Technical Briefings
Senior technicians share field findings, manufacturer updates and regulatory changes with the whole team.
External Training
Staff attend courses run by manufacturers and industry bodies.
Simulation Workshop
An in-house workshop lets technicians practise fault diagnosis and repairs in a controlled setting.
Apprenticeships
We train the next generation through our summer apprenticeship.
What Our Qualifications Deliver for You
Every credential translates into a practical benefit.
Common Questions
What is a Registered Electrical Worker?
A person registered with the EMSD as qualified to carry out electrical work in Hong Kong.
Do you service all aircon brands?
Yes. We service all major brands and hold factory certification for Daikin, Mitsubishi Electric, Panasonic and LG.
Can I see your licence before booking?
Yes. We provide registration and licence details on request.
Do qualified technicians cost more?
Correct diagnosis the first time usually costs less than repeat visits and avoidable part replacements.
AirconPro by Proclean Hong Kong
Qualified from Technician to Management
REW oversight, factory-certified technicians and credentials on request. All aircon brands serviced, Monday to Sunday, 8am to 8pm.