Ecolab Pays $4.75 Billion for CoolIT Systems in Bet on Data Center Liquid Cooling

Ecolab, the St. Paul-based water and hygiene giant, announced on Friday that it has agreed to acquire CoolIT Systems from private equity firm KKR for approximately $4.75 billion in cash Ecolab to buy KKR-backed CoolIT for $4.75 billion amid AI data center boomchannelnewsasia.com·SecondaryArtificial Intelligence words are seen in this illustration taken March 31, 2023. REUTERS/Dado Ruvic/Illustration March 20 : Ecolab said on Friday it would acquire CoolIT Systems from KKR for about $4.75 billion in cash, as the water solutions firm seeks to capitalize on surging demand for liquid cooling in artificial intelligence-driven data centers. Shares of the water management company were down 1 per cent in premarket trading.. The deal marks Ecolab's largest acquisition in more than a decade and represents a decisive bet that the explosive growth of artificial intelligence will reshape the industrial plumbing of the global economy.

CoolIT designs and manufactures liquid cooling systems used by hyperscale and colocation data center operators . Its customers include chipmakers such as Nvidia and Advanced Micro Devices, the companies whose processors sit at the heart of the current wave of generative AI development Ecolab to buy KKR-backed CoolIT for $4.75 billion amid AI data center boomchannelnewsasia.com·SecondaryArtificial Intelligence words are seen in this illustration taken March 31, 2023. REUTERS/Dado Ruvic/Illustration March 20 : Ecolab said on Friday it would acquire CoolIT Systems from KKR for about $4.75 billion in cash, as the water solutions firm seeks to capitalize on surging demand for liquid cooling in artificial intelligence-driven data centers. Shares of the water management company were down 1 per cent in premarket trading.. As data centers shift from traditional air cooling to more efficient liquid-based systems capable of handling higher chip densities and power loads, CoolIT has positioned itself as one of the leading suppliers of that critical transition technology Ecolab to buy KKR-backed CoolIT for $4.75 billion amid AI data center boomchannelnewsasia.com·SecondaryArtificial Intelligence words are seen in this illustration taken March 31, 2023. REUTERS/Dado Ruvic/Illustration March 20 : Ecolab said on Friday it would acquire CoolIT Systems from KKR for about $4.75 billion in cash, as the water solutions firm seeks to capitalize on surging demand for liquid cooling in artificial intelligence-driven data centers. Shares of the water management company were down 1 per cent in premarket trading..

From Water Treatment to Thermal Engineering

Ecolab has spent the past year reorganizing its business to target the data center market. The company, which built its reputation over more than a century providing water treatment, sanitation, and pest control services to restaurants, hospitals, and factories, sees cooling infrastructure as a natural extension of its core competency in fluid management.

The company said it expects CoolIT's hardware and thermal engineering capabilities to complement its own strengths in water, chemistry, and digital monitoring Ecolab to buy KKR-backed CoolIT for $4.75 billion amid AI data center boomchannelnewsasia.com·SecondaryArtificial Intelligence words are seen in this illustration taken March 31, 2023. REUTERS/Dado Ruvic/Illustration March 20 : Ecolab said on Friday it would acquire CoolIT Systems from KKR for about $4.75 billion in cash, as the water solutions firm seeks to capitalize on surging demand for liquid cooling in artificial intelligence-driven data centers. Shares of the water management company were down 1 per cent in premarket trading.. The goal is to assemble what Ecolab describes as a complete cooling and fluid management platform for data center operators — combining CoolIT's coolant distribution units, cold plates, and direct-to-chip cooling technology with Ecolab's existing water treatment and monitoring services.

CoolIT is projected to generate approximately $550 million in sales over the next 12 months Ecolab to buy KKR-backed CoolIT for $4.75 billion amid AI data center boomchannelnewsasia.com·SecondaryArtificial Intelligence words are seen in this illustration taken March 31, 2023. REUTERS/Dado Ruvic/Illustration March 20 : Ecolab said on Friday it would acquire CoolIT Systems from KKR for about $4.75 billion in cash, as the water solutions firm seeks to capitalize on surging demand for liquid cooling in artificial intelligence-driven data centers. Shares of the water management company were down 1 per cent in premarket trading.. The deal is expected to close in the third quarter of 2026 and become accretive to Ecolab's adjusted diluted earnings per share by 2028 Ecolab to buy KKR-backed CoolIT for $4.75 billion amid AI data center boomchannelnewsasia.com·SecondaryArtificial Intelligence words are seen in this illustration taken March 31, 2023. REUTERS/Dado Ruvic/Illustration March 20 : Ecolab said on Friday it would acquire CoolIT Systems from KKR for about $4.75 billion in cash, as the water solutions firm seeks to capitalize on surging demand for liquid cooling in artificial intelligence-driven data centers. Shares of the water management company were down 1 per cent in premarket trading..

The Price of Admission

The acquisition price drew attention on Wall Street. The Wall Street Journal first reported on Thursday, March 19, that Ecolab was nearing a deal to buy CoolIT for between $4.5 billion and $5 billion Ecolab Near Deal for KKR’s Data-Center Cooling Companysj.com·Unverified. The final price of $4.75 billion landed in the middle of that range.

Ecolab shares were down 2.4 percent at $255.49 in afternoon trading following the initial reports Ecolab Near Deal for KKR’s Data-Center Cooling Companysj.com·Unverified. On Friday, when the deal was officially confirmed, shares fell a further 1 percent in premarket trading Ecolab to buy KKR-backed CoolIT for $4.75 billion amid AI data center boomchannelnewsasia.com·SecondaryArtificial Intelligence words are seen in this illustration taken March 31, 2023. REUTERS/Dado Ruvic/Illustration March 20 : Ecolab said on Friday it would acquire CoolIT Systems from KKR for about $4.75 billion in cash, as the water solutions firm seeks to capitalize on surging demand for liquid cooling in artificial intelligence-driven data centers. Shares of the water management company were down 1 per cent in premarket trading.. The market reaction suggests investors are weighing the strategic logic against the near-term financial cost of a major all-cash transaction.

Bank of America analysts reiterated a Buy rating on Ecolab following the announcement but acknowledged the deal would likely be materially dilutive to first-year earnings per share due to the associated debt financing burden. BofA described the acquisition as the price to pay for quality assets in the data center space and viewed it as an attractive growth addition to Ecolab's high-tech business segment, while noting that pro forma leverage would approach manageable but elevated levels.

Some analysts also flagged that Ecolab's stock already trades at a premium valuation relative to its fair value estimates, raising questions about whether the company is paying top dollar for an asset at the peak of an AI investment cycle.

KKR's Lucrative Exit

The deal also represents a remarkable return for KKR. The private equity firm, along with Abu Dhabi sovereign wealth fund Mubadala Investment Co., acquired CoolIT in mid-2023 at a fraction of the current price. The surge in valuation since then reflects the extraordinary pace at which the market for AI infrastructure has expanded. Technology companies worldwide have been ramping up spending on the compute, power, and cooling systems that underpin large language models and other AI applications.

CoolIT was founded in 2001 in Calgary, Canada, and has built its business around modular direct liquid cooling products. The company operates research and development centers in Calgary and Taipei, with manufacturing operations spanning Canada, China, and Vietnam. It provides on-site support in more than 80 countries.

A Pattern of Data Center Acquisitions

The CoolIT deal does not exist in isolation. In December, Ecolab closed a separate $1.7 billion acquisition of Ovivo Inc., a Switzerland-based company that provides ultrapure water technologies for data centers and semiconductor manufacturing. That deal, combined with the CoolIT purchase, signals that Ecolab is pursuing a systematic strategy to assemble a vertically integrated offering for the data center industry.

Ecolab, which reported approximately $16 billion in annual revenue in 2025 across 170 countries and 40 industries, has framed its pivot around a three-part thesis: it can serve the semiconductor fabrication plants that manufacture chips, the power plants that fuel them, and the data centers that deploy them.

The company is not alone in spotting the opportunity. Other Minnesota-based industrial firms have also been expanding their data center businesses. Industry estimates suggest the broader data center cooling market represents a multibillion-dollar opportunity that is growing at a strong double-digit annual rate.

What the Critics Are Watching

Not everyone is convinced the timing is right. The deal arrives amid broader uncertainty in financial markets, with the ongoing conflict in the Middle East driving up energy costs and complicating corporate investment decisions. Ecolab itself announced in March that it would implement a significant energy surcharge on all products and services globally starting April 1, 2026, citing energy market volatility.

Skeptics point to the risk that the current wave of AI investment could prove cyclical rather than structural. If hyperscaler capital spending slows — whether due to a recession, shifts in AI development approaches, or simple budget exhaustion — companies that paid premium prices for AI-adjacent assets could find themselves holding overvalued businesses.

Defenders of the deal argue that liquid cooling is not optional. As chip power densities continue to rise, air cooling simply cannot dissipate heat fast enough. This makes the transition from air to liquid cooling a structural shift rather than a speculative bet, and positions companies like CoolIT as providers of mission-critical infrastructure regardless of how the broader AI narrative evolves.

Financial Outlook

Separately from the acquisition, Ecolab provided updated earnings guidance on Friday. The company forecast first-quarter 2026 adjusted earnings per share of $1.69 to $1.71, up from $1.50 a year earlier Ecolab to buy KKR-backed CoolIT for $4.75 billion amid AI data center boomchannelnewsasia.com·SecondaryArtificial Intelligence words are seen in this illustration taken March 31, 2023. REUTERS/Dado Ruvic/Illustration March 20 : Ecolab said on Friday it would acquire CoolIT Systems from KKR for about $4.75 billion in cash, as the water solutions firm seeks to capitalize on surging demand for liquid cooling in artificial intelligence-driven data centers. Shares of the water management company were down 1 per cent in premarket trading.. For the full year 2026, excluding the impact of the CoolIT transaction, Ecolab continues to expect adjusted diluted earnings per share in the $8.43 to $8.63 range Ecolab to buy KKR-backed CoolIT for $4.75 billion amid AI data center boomchannelnewsasia.com·SecondaryArtificial Intelligence words are seen in this illustration taken March 31, 2023. REUTERS/Dado Ruvic/Illustration March 20 : Ecolab said on Friday it would acquire CoolIT Systems from KKR for about $4.75 billion in cash, as the water solutions firm seeks to capitalize on surging demand for liquid cooling in artificial intelligence-driven data centers. Shares of the water management company were down 1 per cent in premarket trading..

The company plans to finance the acquisition with new transaction debt, which will temporarily push its leverage ratio to elevated levels. Management has indicated it expects to return to lower leverage within two years of closing.

Ecolab has scheduled a webcast to review the CoolIT acquisition on Monday, March 23, at 8 a.m. Eastern time. Investors and analysts will be watching for additional details on integration plans, cost synergies, and the company's medium-term growth targets for its rapidly expanding data center business.