SPX Technologies paid $410 million in cash for FIS Water on September 15, and the bet is simple to state but harder to prove: that the companies keeping the internet cool will spend more money on cleaner, better-managed water, and that SPX can be the company selling it to them.

FIS Water makes filtration and flow-control products, the kind of equipment that removes particulates, maintains water quality, and regulates water movement inside large commercial and industrial cooling systems. Its biggest growth market is data centers, which run hot and require enormous amounts of water-based cooling infrastructure to stay operational.

What SPX is actually buying

SPX already sells cooling towers through its HVAC business. FIS Water slides in alongside that offering, giving the company a fuller catalog of products it can sell into the same cooling projects, to many of the same customers, through many of the same sales channels. The logic is straightforward: if you are already selling someone a cooling tower, selling them the filtration and valve hardware that keeps that tower running cleanly is easier than finding a new customer from scratch.

The company also recently acquired a controls business called Neptronic. FIS Water's valves and actuators are compatible with that product line too, so the pieces are at least designed to fit together on paper.

The revenue picture is modest relative to the price. FIS Water is expected to generate about $105 million in revenue for the full year 2026, which means SPX paid roughly 3.9 times annual revenue to acquire it. That is a meaningful premium, and it makes profitability the central question. SPX has not disclosed FIS Water's operating margins or how much cash the business actually generates. The $410 million price tag included "certain tax attributes," which could improve the after-tax economics, but their value was not quantified in the announcement.

Put plainly: we know what SPX paid, and we know roughly what FIS Water sells. We do not yet know how profitable it is.

Why data centers make this a live bet

The timing is not accidental. Demand for data center capacity has been growing sharply as artificial intelligence workloads require more and more computing power, and computing power generates heat. The cooling infrastructure required to manage that heat is a real and growing capital expenditure for the companies building these facilities.

Water-based cooling systems sit at the center of that buildout. Equipment that keeps those systems clean and reliable is not optional spending; it is maintenance that operators have a practical reason to buy from a vendor they already trust. That is the market SPX is positioning itself to serve more completely.

The part that is genuinely uncertain

Cross-selling sounds easy in an acquisition announcement. Making it happen requires retaining the engineers and salespeople who know FIS Water's products, preserving the customer relationships that came with the business, and convincing those customers to consolidate more of their purchasing under one supplier. All of that is executable in principle, and none of it is guaranteed.

The absence of disclosed profitability numbers means outside observers are working with incomplete information. If FIS Water carries strong margins, the 3.9-times revenue multiple starts to look reasonable. If it does not, SPX has paid a steep price for revenue alone.

The larger pattern here is familiar in industrial manufacturing: companies that serve a growing infrastructure market try to move from selling a single product to selling a system, capturing more dollars per project and making themselves harder to replace. SPX is making that move into cooling infrastructure at a moment when demand for that infrastructure is genuinely accelerating. Whether $410 million was the right price for that position is a question the next few years of earnings reports will answer.