Closed-Circuit Cooling Tower Market Share Rose 7% in 5 Years – What's Behind It?

Closed-Circuit Cooling Tower Market Share Rose 7% in 5 Years – What's Behind It?

According to industry data, the share of closed-circuit cooling towers in the overall cooling tower market increased from 31.2% in 2021 to 38.2% in 2025--1. A 7-percentage-point gain over five years is no small feat for a relatively mature industrial equipment sector. So where did the growth come from?

I. Water Savings – The Hardest Truth

Cooling towers are major industrial water consumers. In open cooling towers, circulating water is directly exposed to air. Combined evaporation and drift losses typically range from 1.24% to 2%-. For a 100-ton-per-hour system, an open tower can evaporate thousands of tons of water annually.

Closed-circuit towers work differently. The circulating water runs inside sealed coils, never contacting the air, with water loss as low as 0.01%-. Research shows that under the same operating conditions, closed-circuit towers can save over 55% of water compared to open towers--. With growing water scarcity and rising industrial water prices, this gap translates directly into real operating cost savings.

II. Policies Are Pushing Enterprises to Switch

Over the past few years, national policies on industrial water conservation have tightened considerably. The 2024 Industrial Water Efficiency Improvement Action Plan explicitly requires new projects to achieve a cooling water recycling rate of no less than 98%-42. Water extraction quotas are also becoming stricter across regions-. Open towers, with their high evaporation losses and difficulty meeting recycling rate targets, are being phased out of many new projects. Closed-circuit towers, with their inherently closed-loop design, naturally meet these requirements-. In 2025, newly issued cooling tower standards in China raised drift loss testing requirements by 50%-37 – pressure for open towers, opportunity for closed ones-1.

III. Data Centers and High-End Manufacturing Are Driving Demand

The traditional downstream markets for cooling towers – power, chemicals, and metallurgy – are stable but offer limited growth-37-42. The real growth is coming from new scenarios:

Data centers are the fastest-growing segment. High-density computing demands extreme precision and reliability from cooling systems, with the data center cooling tower market growing 12% year-over-year in 2025-37. Closed-circuit towers, with their clean water quality, stable operation, and resistance to scaling, are practically the standard choice in these applications-.

Semiconductor manufacturing is another rapidly growing segment. Wafer fabs have extremely stringent requirements for cooling water quality and temperature stability, driving demand for high-end closed-circuit towers. This segment grew 29.5% in 2024-47.

The new energy sector is also contributing. Photovoltaic polysilicon production and lithium battery manufacturing both require high-precision temperature-controlled cooling equipment-47.

What these new applications share: sensitivity to water quality, zero tolerance for downtime, and a focus on long-term operating costs – exactly where closed-circuit towers excel.

IV. Technology Is Elevating the Product

Market growth isn't driven solely by external factors – the product itself is evolving. Intelligent control systems are becoming standard on closed-circuit towers, using real-time monitoring of water quality, temperature, and energy consumption to significantly improve operating efficiency-. Variable frequency drive technology has improved energy efficiency by 20% to 25% in next-generation towers-47. IoT sensors and digital twin technology enable remote monitoring and predictive maintenance, reducing operating costs by 18% to 25%-47. In other words, closed-circuit towers don't just save water – they save electricity and reduce hassle. When a product outperforms competitors on multiple fronts, market share gains follow naturally-.

Conclusion

Seven percentage points in five years is no accident. It reflects sustained cost savings from water efficiency, mounting policy pressure on high-water-consumption equipment, rigid demand for high-quality cooling from data centers and advanced manufacturing, and product improvements driven by technology. Four forces combined to drive this 7% market shift.

For users, the case for closed-circuit towers is becoming clearer: they may not be the cheapest option upfront, but in more and more scenarios, they are the most cost-effective choice over the long run.