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Cooling Tower Fill Demand Rising in Indonesia Data Center Boom

If you have been following the data center industry in Southeast Asia, you already know Indonesia is ground zero for growth. The Indonesia Data Center Market was valued at USD 2.82 billion in 2025 and is projected to hit USD 6.09 billion by 2031, growing at a CAGR of 13.71**[reference:0]. That means a massive wave of new cooling towers is coming, and with them, huge demand for high-quality cooling tower fill. But here is what I am hearing from hyperscale operators on the ground: they are not just buying any fill. They want High-Efficiency Cooling Tower Media that delivers low PUE and handles Jakarta's challenging air quality. Let me walk you through what is really happening in this market.

Why Indonesia Is Different from Other Southeast Asia Markets

Indonesia's data center boom is being driven by a perfect storm of factors: rapidly growing cloud adoption, government digitalization initiatives, and the rise of AI workloads. The Southeast Asia data center construction market is expected to attract cumulative investment of over $86 billion between 2026 and 2031, positioning the region as an AI-ready hub[reference:1]. But Indonesia presents unique challenges that many foreign operators underestimate.

First, air quality. Jakarta and other major cities have high levels of particulate matter, especially during dry season. That dust gets pulled into cooling towers and can quickly foul standard film fill. I have seen new data centers in Jakarta experience fill clogging within six months of operation because they did not account for local conditions. The solution is proper Air Inlet Louvers and Air Intake Screens, combined with fill media that has larger flutes to resist clogging.

The Water Controversy You Need to Know About

A recent Jakarta Post investigation highlighted a growing concern: older data centers in Indonesia use chilled water and cooling towers, leading to high water consumption[reference:2]. This has drawn attention from local water authorities, and some new hyperscale facilities are beginning to adopt air-cooled chillers with economizers to reduce water reliance. But here is the reality: for the majority of data centers in tropical Indonesia, water-cooled systems with cooling towers remain the most energy-efficient option. The key is to minimize water loss through better components.

That is where high-efficiency Drift Eliminator comes in. The 2026 standard for drift eliminators reduces aerosol emissions to less than 0.0005** of circulating water flow[reference:3]. That is a game-changer for water-stressed regions like Jakarta. Pair that with a good Water Collector to recover splash-out, and you can dramatically cut makeup water requirements. I have seen facilities cut water consumption by 30-40** just by upgrading these components.

What Hyperscale Operators Are Actually Specifying

I have been consulting with several hyperscale operators planning new facilities in the greater Jakarta area and Batam. Here is what their cooling tower specifications look like in 2026:

• Film fill with 25mm flute spacing – wider than the 19mm standard used in cleaner environments. This provides a balance of heat transfer and clog resistance.
• Double-layer intake louvers with removable screens for easy cleaning. Some are specifying stainless steel screens to handle Jakarta's corrosive air.
• High-efficiency drift eliminators targeting drift loss below 0.001**. This is non-negotiable for operators with sustainability commitments.
• Side-stream filtration to keep suspended solids below 5 ppm, extending fill life.

One operator told me they are budgeting for fill replacement every three years instead of the typical five-year cycle, because they expect higher fouling rates. That is smart planning, but it also means they need a reliable supply chain. If you are a plant manager in Indonesia, you should be thinking the same way.

The Rise of AI Workloads Changes Cooling Requirements

AI workloads are different from traditional enterprise applications. They demand higher rack densities and generate more heat. Some new facilities are being built with rack densities exceeding 30 kW per rack, compared to the traditional 5-10 kW. That heat has to go somewhere, and cooling towers are still the most efficient way to reject it at scale.

But here is the catch: higher heat loads mean your cooling tower fill has to handle higher water temperatures. Standard PVC starts to degrade above 50°C. For AI data centers, I recommend using polypropylene fill or high-temperature PVC blends that can handle up to 65°C. Also, pay attention to your Film Fill Cooling Tower design – higher heat loads require more surface area, but you cannot sacrifice clog resistance. It is a balancing act.

Case Study: Jakarta Data Center Retrofit

I worked on a retrofit project for an existing colocation facility in Jakarta last year. The cooling towers had 8-year-old film fill that was heavily fouled with dust and biological growth. Approach temperature had drifted from a design 3°C to over 6°C. The facility was struggling to maintain server inlet temperatures during peak hours.

We replaced the fill with new 25mm flute PVC film fill, installed new Air Inlet Grilles with fine mesh screens, and upgraded the drift eliminators. The results were dramatic: approach temperature dropped to 3.2°C, fan energy decreased by 12**, and the facility was able to raise chilled water setpoint by 1.5°C, saving an estimated $80,000 per year in chiller energy. The fill paid for itself in eight months.

Maintenance Tips for Indonesia Conditions

If you are operating cooling towers in Indonesia, here is what I recommend based on field experience:

• Clean intake screens weekly during dry season. The dust load is no joke.
• Inspect fill every three months using a borescope through access ports. Look for dust accumulation on the top surface.
• Plan for fill replacement every three years in Jakarta and Surabaya. You might stretch to four years in cleaner areas like Batam.
• Install water meters on makeup lines to track water consumption. A sudden increase often indicates drift eliminator problems.
• Keep spare fill sheets and eliminator blades on hand. Shipping to Indonesia can take weeks.

One more thing: do not forget about your Demister. In high-humidity environments, demister performance is critical to preventing visible plumes that attract unwanted attention.

Looking Ahead

The Indonesia data center boom is just getting started. With over $6 billion in projected market value by 2031, the demand for cooling tower components will only increase[reference:4]. But the facilities that succeed will be those that plan for local conditions from day one. Do not just copy specifications from a Singapore or Tokyo data center. Jakarta is different, and your cooling tower fill strategy should reflect that.

We have been supplying cooling tower fill to Indonesian data centers for years and understand the unique challenges of the market. Reach out if you want to discuss your specific application.