The physics are unforgiving. Pack enough GPUs into a server rack—the kind powering India's AI buildout—and you're suddenly dealing with heat loads that would make a commercial kitchen jealous. A hundred kilowatts per cabinet, sometimes more. Air conditioning alone can't touch it.
Which is why, on a sweltering August 6 in Ahmedabad, a startup barely a year old decided it had a solution worth showing off.
KühlTherm unveiled what it's calling an end-to-end liquid cooling ecosystem at a launch event that doubled as the inauguration of its validation lab—a facility the company claims is India's only integrated testing ground for liquid cooling systems, though that's a claim no one has independently fact-checked yet. Still, the ambition is real. So is the hardware: three distinct product lines meant to address the thermal emergency unfolding in data centers from Chennai to Gurugram.
Cooling the Chips That Can't Wait
The company's RDHx ProSeries rear-door heat exchangers offer a pragmatic entry point. These modular units attach to the back of standard racks, intercepting exhaust heat in 20-kilowatt increments before it saturates the room. Scale them up and you're looking at 100 kilowatts per door—a retrofit play for operators who need more density but can't afford to gut their facilities.
Feeding those heat exchangers is the Coolant Distribution Unit, engineered in 250-kilowatt blocks and capable of handling up to 1.5 megawatts per row. Leak-free connections and redundancy are table stakes here; you're pumping fluid through equipment worth more than most people's homes.
For chips running truly hot—300 to 2,500 watts apiece—KühlTherm offers direct liquid cooling via cold plates that sit flush against processors. The approach makes sense for rack densities north of 100 kilowatts, where air simply stops working. Tying it all together is NexusFlow OS, billed as an AI-native control platform with chip-to-chiller visibility and predictive optimization, though how much of that is marketing versus real differentiation is hard to say from the outside.
CEO Shailesh Bishnoi and his four co-founders—Jasvipul Chawla, Vishant Gandhi, Kamish Patel, and Kishan Baravaliya—incorporated the company in 2025. By mid-July they had landed a $1.1 million seed round led by Arkam Ventures, announced on July 16. Employee count sits somewhere between eleven and fifty, with hiring posts hinting at expansion in conjugate heat transfer engineering, the sort of specialty that suggests they're serious about R&D depth.
Made in Gujarat, Marketed to the World
Here's where KühlTherm's pitch gets pointed: the rear-door units, CDUs, manifolds, and quick disconnects are manufactured in-house at the company's Sarkhej-Sanand Road facility. In a market where most liquid cooling hardware still ships from the U.S., Europe, or East Asia, local production isn't just a cost story—it's a supply chain hedge.
Whether the newly inaugurated validation lab truly stands alone in India is another matter. The company claims so. No one else has weighed in. But the intent is clear: iterate locally, control quality, and avoid the lag that comes with overseas R&D cycles.
A Market Getting Crowded, Fast
KühlTherm is hardly operating in a vacuum. Schneider Electric opened a liquid cooling factory in Bengaluru back in February, positioning India as an export hub for cooling tech. Vertiv teamed up with Netweb Technologies the same month to deliver liquid-cooled GPU racks. Supermicro expanded its rear-door portfolio in July with units scaling from 10 to 120 kilowatts. Nidec has an in-rack CDU prototype rated for 300 kilowatts, with mass production penciled in for early 2027. Refroid, another Indian player, launched homegrown CDUs in mid-2025 and has since secured partnerships with TierX and Technavious.
Against that backdrop, timing might matter as much as technical chops. AirTrunk committed $30 billion in June to build 5 gigawatts of AI data center capacity in India—a single announcement that underscores the infrastructure wave now cresting. Broader market estimates peg India's data center cooling segment at $2 to $2.5 billion over the next few years, with liquid cooling adoption accelerating as operators retrofit legacy sites for AI workloads.
The question isn't whether the market exists. It's whether a year-old startup with a seed round and a factory in Gujarat can compete with the Schneiders and Vertivs of the world—companies with decades of deployment experience and global service networks.
Taipei and Beyond
KühlTherm plans to showcase its ecosystem at the OCP APAC Summit in Taipei on August 12–13, roughly a week after the Ahmedabad debut. The company also participated recently in the India AI Data Centre Conference in Mumbai, part of a broader effort to build credibility with hyperscale operators and infrastructure investors.
Whether the validation lab claim holds up, whether NexusFlow OS delivers on its AI-native promises, whether local manufacturing translates into genuine competitive advantage—those are all open questions. But in a market where heat is the new bottleneck and supply chains are still taking shape, KühlTherm is betting that being there first, with hardware you can actually touch, counts for something.
Perhaps more than the founders expected when they opened shop last year.
