恒升工程HANG SING ENGINEERING

For Homeowners

Professional A/C service — fast to arrive, fine in the details

The same craftsmen who work on MTR projects, serving your home. Free quotes, transparent pricing.

Three Simple Steps

  1. 1

    WhatsApp or leave your details

    Tell us the service and your district — we'll reply with an initial quote fast.

  2. 2

    On-site confirmation

    Our technician assesses on site and confirms the price before any work starts. No surprises.

  3. 3

    Works & warranty

    Licensed technicians do the job, test everything, and back it with a service warranty.

Transparent Pricing

Quotes depend on unit type, horsepower and site conditions. The price is confirmed in writing before work starts — never topped up midway. WhatsApp us a photo of your unit and your district for a fast quote.

* Final pricing confirmed by on-site assessment

After a deep clean, it really is different

Before and after deep cleaning — After
Before and after deep cleaning — Before
BeforeAfter

Before and after deep cleaning

Frequently Asked Questions

It depends on the unit type and horsepower — split and window units are priced differently. WhatsApp us your unit type, horsepower and district for an exact price. Our pricing is fixed: no top-ups on site.

Once a year for typical home use; twice a year if you have pets, live near a main road, or run the unit long hours. Regular cleaning saves electricity, cools better, removes odours and extends the unit's life.

Usually within 3–7 days of confirming the quote. In peak season (May–August) book early. Tell us if it's urgent and we'll do our best.

Yes. Every technician holds a valid safety card and worker registration, and many hold MTR-approved licences. A team trusted with railway projects brings the same rigour to your home.

Daikin, Carrier, Mitsubishi, Zanussi, Panasonic, Hitachi and other major brands. For older or less common units we'll inspect first, then quote.

We strip and wash the filters, evaporator coil (wet wash), fan wheel and drain pan, clear the drain line, and test the outlet temperature on the spot. Floors are protected throughout and we clean up before we leave.

Yes — installation and repair works carry a service warranty, stated clearly on your quotation. Any issue, WhatsApp us and a technician will follow up.

Yes — it's one of our specialities. House VRV systems are designed, rigged and installed by our dedicated team. See our Kau To Shan and Peak Road case studies.

Get a Free Quote

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