📐
Commitment to Efficiency
An HVAC system is a major investment. We are committed to bringing efficiency to every design and every installation we deliver — built for long-term operation, not just handover day.
About PT. Son Duct Sejahtera
A national HVAC design & build company built on quality workmanship, in-house manufacturing, and long-term client partnerships.
Who We Are
PT. Son Duct Sejahtera is a national HVAC construction company founded in 2010 by Michael Stefanus and Hadi Saputra Makmur, headquartered in Kapuk Utara, North Jakarta. Our founders built the company on one belief: air conditioning is not just about buying and selling cooling machines — it is about efficiency calculations, careful design, and planning for long-term use.
From a 4,500 m² combined office and workshop, our team of 55 professionals designs, fabricates and installs HVAC systems for some of Indonesia's most demanding projects: shopping malls, hospitals, factories, refineries, data centers, airports, power plants and landmark towers — including the chiller plant of Indonesia's tallest building.
Our philosophy is simple: deliver the highest quality products, service and attention to every client — and keep performing beyond expectations, project after project.
16+
Years in Business
55
Employees
4,500 m²
Office & Workshop Area
100+
Project References
Vision & Mission
What Drives Us
Our vision: to be a leading and trusted HVAC construction company that satisfies every client through high-quality service and high integrity.
🤝
Client Focus
The first thing we do on any job is listen. We work to understand what each client wants and needs, so the result brings genuine satisfaction and comfort.
🛡️
Project Management with Integrity
Two-way communication and full transparency with our clients — the foundation of professional relationships that last well beyond a single project.
A Message From Our Director
"We perform beyond our clients' expectations."
"The people working behind this company are among the best in the industry. With both financial and technical resources available, I am confident PT. Son Duct Sejahtera can bring specific and unique benefits to our clients. We take great pride in developing cohesive, responsive and successful partnerships that fit your needs."
Hadi Saputra Makmur
Director, PT. Son Duct Sejahtera
Organization
Our Team Structure
55 employees organized for responsiveness — from engineering at head office to fabrication in the workshop and supervision on site.
🏢
Head Office — 7 Staff
Management, engineering, estimation and project administration based at our Kapuk Utara headquarters.
🏭
Workshop — 20 Staff
Skilled fabricators operating duct forming, flanging, welding and spiral duct machinery across our 4,500 m² facility.
👷
Site Teams — 28 Staff
Installation supervisors and technicians deployed to project sites across Indonesia, from Jakarta to Kalimantan and Bali.
See What We've Built
Explore over a decade of HVAC projects for Indonesia's leading developers, contractors and industries.
View Project References