恒升工程HANG SING ENGINEERING

Commercial Central A/C · Ventilation · Ductwork

Commercial central A/C, ventilation & ductwork specialists

Malls, offices, restaurants, factories & institutions — central A/C, ventilation & ductwork and E&M works, one-stop. MTR- and AsiaWorld-Expo-grade team; free on-site assessment & quote.

MTR-Approved Contractor Credentials·RSI / CPNT / FM·Registered Minor Works Contractor

See Our Projects

Book a Consultation

Tell us about your project and we'll reply within one working day to arrange a site survey.

Step 1 of 3

What do you need?

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Years of experience
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Commercial projects
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Licensed & compliant
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Years MTR-approved

Long-Term Clients

  • MTR

    MTR

    Station AHU, ductwork and pipework replacement in non-traffic hours

  • AsiaWorld-Expo

    AsiaWorld-Expo

    New-build and improvement HVAC works across venue halls

  • HK Jockey Club

    HK Jockey Club

    Fire damper inspection and maintenance

  • K11 · Retail & Malls

    HVAC packages to premium fit-out standards

  • Kowloon Dairy

    Kowloon Dairy

    Cold storage refrigeration improvement

  • Pizza Hut · KFCPizza Hut · KFC

    Pizza Hut · KFC

    Chain F&B ventilation works

Commercial Services

Commercial Ventilation Installation

01

Commercial Ventilation Installation

Design and installation for restaurants, shops, offices and industrial premises — compliant with regulations and licensing requirements.

Duct Design & Installation

02

Duct Design & Installation

Site survey, factory fabrication and hoisted installation in one package. Flanged joints throughout — airtight, durable, maintainable.

AHU / Diffuser Replacement

03

AHU / Diffuser Replacement

Specialists in live-premises AHU replacement: modular rigging, out-of-hours working, zero disruption to daily operations.

FCU Replacement

04

FCU Replacement

Fan coil units replaced one by one — water, electrical and air connections rebalanced with cooling kept online.

Fire Damper Installation & Maintenance

05

Fire Damper Installation & Maintenance

Installation, inspection, repair and interlock testing with full test reports to support your fire services inspection.

Thermal Insulation Works

06

Thermal Insulation Works

Pipe and duct insulation and cladding — cuts energy loss and prevents condensation problems.

Fit-Out HVAC Support

07

Fit-Out HVAC Support

We mobilise alongside your fit-out contractor and hit opening day. Deep experience with restaurants, bars and offices.

A Rigorous Delivery Process

From tender to handover, every step follows procedure — and every project has a dedicated project manager.

  1. 01

    Enquiry & Site Survey

    Free site inspection to understand conditions and technical requirements.

  2. 02

    Quotation & Tender

    Detailed itemised pricing that fits institutional procurement.

  3. 03

    Project Management

    A dedicated PM coordinates programme, materials and manpower.

  4. 04

    Construction

    Licensed crews work to full safety standards, around your operating hours.

  5. 05

    Testing & Handover

    Commissioning, acceptance documents and test reports delivered.

Credentials & Assurance

Every worker holds a valid construction safety card and worker registration, with government-recognised safety training every quarter. Multiple staff hold MTR-approved licences (RSI, CPNT, FM).

  • MTR-Approved Licence RSI
  • MTR-Approved Licence CPNT
  • MTR-Approved Licence FM
  • Registered Minor Works Contractor

Frequently asked questions

Commercial and institutional central A/C, ventilation and ductwork, VRV multi-split, fire dampers, and E&M / A/C maintenance — for malls, offices, restaurants, factories and institutions.

Free on-site assessment and quote — transparent, itemised pricing with no hidden costs confirmed before work starts.

We take on projects of any size — from a single-unit install or repair to a whole-building central A/C and ventilation project.

Licensed contractor with RSI / CPNT / FM qualifications, able to carry out Minor Works, with compliant workmanship and completion documents.

We reply within one working day and arrange a site visit; timelines depend on project scope and are provided at assessment.

Yes — scheduled A/C and ventilation maintenance contracts to reduce breakdowns and downtime, with priority repair response.

All of Hong Kong — Kowloon, Hong Kong Island, the New Territories and outlying islands.

50 years of engineering experience — the team trusted by MTR, AsiaWorld-Expo and the Jockey Club, serving your commercial premises with the same craftsmanship.

Book a Consultation

Tell us about your project and we'll reply within one working day to arrange a site survey.

  • Free on-site assessment & quote
  • Transparent pricing, no hidden costs
  • Reply within one working day
  • Licensed team · completion docs · maintenance
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