Expert Project Management for Seamless Mechanical Works Execution

At Han On Sdn Bhd (HOSB), we specialize in managing and executing project-based mechanical works with precision, efficiency, and technical expertise. While air-conditioning and mechanical ventilation (ACMV) remain our core strength, our project scope now also includes fire fighting systems, plumbing works, and building management system (BMS) coordination for residential, commercial, and mixed-use developments.

Our project division is committed to delivering high-quality, coordinated mechanical solutions that integrate seamlessly with each project's unique requirements. With a proven track record, we have successfully completed numerous projects, demonstrating our commitment to excellence, compliance, and client satisfaction. Our approach is built on strategic planning, expert execution, rigorous quality assurance, and effective coordination with consultants and trade partners, ensuring optimal outcomes for our clients.

Our Core Strengths

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Comprehensive Project Management

We oversee every project from planning and logistics to execution, ensuring seamless delivery on time and within budget while maintaining high-quality standards.
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Tailored Mechanical Solutions

We provide customized mechanical solutions — from air-conditioning and ventilation to fire fighting, plumbing, and BMS coordination — designed to meet the unique needs of residential, commercial, and mixed-use developments.
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Efficient Multi-Trade Coordination

Our team excels in coordinating across multiple trades and disciplines, ensuring smooth interfaces between consultants, contractors, and subcontractors to minimize site conflicts and delays.
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Rigorous Quality & Compliance Oversight

We implement strict quality assurance and regulatory compliance checks at every stage, ensuring all mechanical works meet project specifications and industry standards.
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Proactive Coordination & Site Management

We facilitate smooth collaboration between consultants, main contractors, and trade partners, minimizing clashes and ensuring integrated project execution.

Featured Projects

Trinity Aquata

Aquata Serviced Residences, Sg. Besi, KL

Supply, delivery, installation, testing, commissioning & maintenance of air conditioning & mechanical ventilation services
sympiny square pj

Symphony Square, Jalan Semangat, Seksyen 13, PJ

Supply, installation, testing & commissioning of air conditioning & mechanical ventilation services
Tropicana Gardens

Tropicana Gardens (Ph3) Serviced Residences, Kota Damansara

Supply & install air conditioning services
SS13 Grand Subang

SS13 Grand Subang, Subang Jaya

Supply, delivery, installation, testing, commissioning & maintenance of air conditioning & mechanical ventilation services
KTC

Kwong Tong Cementary (KTC) Banquet Hall, Kuala Lumpur

Supply, delivery, installation, testing, commissioning & maintenance of air conditioning & mechanical ventilation services
TRINITY LEMANJA (1)

LeManja Residences, Kepong

Supply, delivery, installation, testing, commissioning & maintenance of air conditioning & mechanical ventilation services
SS15 Grand Subang

SS15 Grand Subang, Subang Jaya

Supply, delivery, installation, testing, commissioning & maintenance of air conditioning & mechanical ventilation services
GUARDIAN

Guardian Retail Outlet (West Malaysia) 100 Outlest

Supply, delivery, installation, testing, commissioning & maintenance of air conditioning & mechanical ventilation services
HOSPITAL PASIR GUDANG2

Hospital Pasir Gudang, Johor

Supply, delivery, installation, testing, commissioning & maintenance of air conditioning & mechanical ventilation services
TNB

TNB Gold, Bangsar

Supply, delivery, installation, testing, commissioning & maintenance of air conditioning & mechanical ventilation services
BIG PHARMACY

Big Pharmacy Healthcare Sdn Bhd, Taman Perindustrian Bukit Raja

Air Conditioning and Mechanical Ventilation Services
wellnessa

Trinity Wellnessa

Supply, delivery, installation, testing, commissioning & maintenance of air conditioning & mechanical ventilation services
Residensi Selangorku Begonia

Residensi Selangorku Begonia

Air Conditioning and Mechanical Ventilation Services
Residensi Selangorku Begonia

Residensi Selangorku Begonia

Air Conditioning and Mechanical Ventilation Services
myra cove

Myra Cove, Cyberjaya

Air Conditioning and Mechanical Ventilation Services
DAHLIA IMPIANA, SALAK TINGGI

Dahlia Impiana, Bandar Baru Salak Tinggi

Air Conditioning and Mechanical Ventilation Services
Trinity Rainfora, Bandar Kinrara

Trinity Rainfora, Bandar Kinrara

Air Conditioning and Mechanical Ventilation Services
idaman-bayu-building

Idaman Bayu (MBI)

Air Conditioning and Mechanical Ventilation Services
The-Myra-Putra-by-Myra-located-in-Desa-Pinggiran-Putra-Putrajaya. (1)

DPP 502

Air Conditioning and Mechanical Ventilation Services
bayu 2sixty

Bayu 2sixty

Air Conditioning and Mechanical Ventilation Services
Guardhouse_FA

Greenwoods Senna

Air Conditioning and Mechanical Ventilation Services
myra senja

Myra Senja

Air Conditioning and Mechanical Ventilation Services
sensoria

Trinity Sensoria

Air Conditioning and Mechanical Ventilation Services
ecohill 3

Ecohill plot 3 - Suasana

Air Conditioning and Mechanical Ventilation Services
bayu selayang height

Bayu Selayang Heights

Air Conditioning and Mechanical Ventilation Services
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KTCC, TNB TERENGGANU

Supply, installation, testing, commissioning, and maintenance of Air Conditioning & Mechanical Ventilation Services, Building Systems Management, Fire Protection Services, and Cold Water & Sanitary Plumbing Services.

Client Testimonials

  • Trinity Infra & Building Contractor
    We would like to take this opportunity to write this letter of appreciation for Han On Sdn Bhd and their working relationship with us for the above mentioned project. Han On Sdn Bhd have completed Air Conditioning and Mechanical Ventilation Work for the above mentioned development. They have shown their ability to perform standard quality of works which up to our satisfaction and demonstrated a great professionalism during the specified construction period. We have no hesitation in recommending this company for our future projects.
    Trinity Infra & Building Contractor
  • Firstly, we would like to take this opportunity to thank you and your team for the fantastic work you did in the Project. We would like to express our utmost appreciation to Han On Sdn. Bhd. for completing the Project's Air Conditioning & Mechanical Systems Work. We appreciate you and your team for exhibiting professionalism throughout the Project period. You and your team had demonstrated the capability and skills required to complete the Project. We are very satisfied with the performance and quality of work and performance. Your cooperation is much appreciated. It is our pleasure to recommend Han On in our future projects. We wish you the best in your future endeavors.
    Modular Scale Sdn Bhd

  • We would like to take this opportunity to record our utmost appreciation to Han On Sdn. Bhd. for completing the Air Conditioning & Mechanical Systems Work of the Said Project.

    We would like to commend you and your team for displaying high integrity and professionalism to carry out the works throughout the project period. You and your team had been consistently demonstrating the ability to complete the Said Project diligently to meet our quality standard, budget, and timeline. We are highly satisfied with you and your team’s performance and cooperation rendered to us.

    It has been our great pleasure to work with you and your team. We would be more than delighted to recommend Han On in our future projects. We wish you the best in your future undertakings.

    Mediaraya Sdn Bhd
  • We developed a great partnership with HAN ON SDN BHD ( ACONMAN ) and their dedication to our project is evident in all aspects of the site. We appreciate their attention to detail and creative approach to bringing the magnificent service. ACONMAN provides good service as well as ventilation systems, their strong knowledge base of technical and workmanship are the main factors that we love to, and they always achieve the time, quality, and quantity of their service. Aconman provides excellent pre-plan details and discussions, they truly understand the requirements of work, organize the discussion to boost work efficiency and reduce conflict in the future. It's also great that Aconman is able to provide professional advice, technical support in different ventilation systems and scenarios. Not only that, they also make quick responses and great coordination on site, improving the efficiency of work and the site condition towards a healthy goal. Further, Aconman provided excellent after-service, such as guidance and maintenance. We are very enthralled and pleased with their work, and there is a blessing from their profession and services. We believe the quality created loyal customers, and there’s no doubt that ACONMAN is a first choice of ventilation system technician!
    Chi Design Sdn Bhd