At Ying Yau, we offer honest and expert advice to ensure you get exactly what you require. We take on small and large air conditioning installations, ranging from single wall-mounted split units to dozens of VRV and VRF for commercial projects. Ying Yau places its customers at the core of its business. Our installations are versatile so that any critical work can be scheduled around your business operations to help minimize disruptions.

Service & Maintenance

Ying Yau is at your service to support your air conditioning systems beyond their initial installation. Our dedicated team of engineers can service your units, resulting in prolonged lifespan, optimum performance and energy efficiency. This will save you money and reduce the likelihood of future breakdowns.


Experiencing issues such as leaks, bad odours or power outages? Our engineers are ready to respond swiftly and be there for your business-critical systems. Rest assured your units will be up and running smoothly, as soon as possible.


Ying Yau also provides wiring services and supply of spare parts.