TL;DR — Nvidia’s newest AI chips draw over 1,000 watts each, more heat than air cooling can handle. That single constraint pushed Vertiv’s liquid cooling backlog up 109% year over year.
Nvidia’s Blackwell GPUs draw up to 1,000 watts each — more than three times the heat output of chips from seven years ago. Rack density in AI data centers has climbed from roughly 15 kilowatts to as much as 130 kilowatts. Air, the cooling method that ran the internet for three decades, physically cannot move enough heat out of a rack that dense. That single engineering constraint has turned liquid cooling from a niche specialty into one of the fastest-growing infrastructure markets tied to the AI buildout — and it’s why Vertiv, a company most investors had never heard of three years ago, closed 2025 with a backlog up 109% year over year.
The Physics Problem Nobody Budgeted For
Nvidia’s H100 and H200 chips, rated around 700 watts, were already pushing air cooling to its limit. The newer B200 and B300 Blackwell chips exceed 1,000 watts per chip, and at that heat density, air simply doesn’t have the thermal capacity to keep the silicon in its operating range without throttling performance. Liquid cooling — running coolant directly to or near the chip — solves the physics problem directly. Independent testing comparing liquid-cooled and air-cooled Nvidia H100 systems found liquid cooling improved performance by roughly 17% while running at meaningfully lower temperatures. That performance gap is why liquid cooling has gone from optional to mandatory in any data center built around the current generation of AI accelerators.
A New Industry Rides the Heat Wave
Grand View Research puts the global data center liquid cooling market at $6.7 billion in 2025, growing to $29.5 billion by 2033 — a compound annual growth rate above 20% for most of the next decade. Vertiv, one of the sector’s largest suppliers, ended 2025 with a book-to-bill backlog of $15 billion, up 109% from the year before, and opened a new manufacturing facility in Malaysia specifically to keep up with demand. The company’s stock is up more than 60% year to date as of late July, outperforming the S&P 500 by a wide margin.
A Quarter That Proves the Point
Vertiv’s second-quarter 2026 results, reported in early August, show exactly what a demand-constrained, execution-constrained business looks like. Revenue came in at $3.274 billion, up 24% year over year but about $109 million short of the Street’s estimate — a miss management attributed to multiphase project execution and supply chain timing on large deployments, not softer demand. Every profitability line beat anyway: adjusted EBITDA of $780.5 million, adjusted EBIT up 51% year over year, and adjusted diluted EPS of $1.52, up 60%. Adjusted operating margin expanded 410 basis points to 22.6%, and adjusted free cash flow more than tripled to $925 million, pushing the balance sheet into a net cash position.
Management didn’t treat the revenue timing gap as a reason for caution. It raised full-year 2026 guidance across every metric: net sales guidance climbed to $14 billion at the midpoint, implying 37% growth for the year, and adjusted diluted EPS guidance rose to $6.70, up 60% from 2025. Third-quarter guidance calls for $3.75 billion in revenue, up 40% year over year — effectively betting that the delayed Q2 revenue shows up rather than disappears.
Why This Market Doesn’t Slow Down When Chip Orders Do
Liquid cooling isn’t tied to any single chipmaker’s order cycle the way GPU sales are. Whether Nvidia, AMD, or a hyperscaler’s own custom silicon ends up in the rack, the thermal problem is identical, and it gets worse with every chip generation, not better. Every new data center that installs a liquid cooling system also becomes a recurring maintenance customer, which is why Vertiv’s business looks less like a cyclical hardware supplier and more like a toll booth on the entire AI buildout, regardless of which chip vendor wins any given quarter.
Sources: Vertiv Holdings Co. second-quarter 2026 earnings release and call (reported early August 2026); Grand View Research data center liquid cooling market estimates; independent liquid-cooling versus air-cooling performance testing on Nvidia H100 systems. Third Pole Markets holds no position in Vertiv or Nvidia as of publication. This is not investment advice — see our About page for our full disclosure policy.
For more on the liquid-cooling shift, see Vertiv’s investor relations page and Data Center Dynamics‘ coverage of AI infrastructure cooling.
