Shortage not established. 0 red, 0 green, 4 unknown. Confidence: low.
Liquid cooling is growing fast and suppliers are adding capacity. But no maker has published lead times, said demand exceeds what it can build, or given prices for cooling products specifically. The evidence doesn't tell us yet whether supply is balanced or constrained.
Outlook: what would settle it is a maker reporting lead times or a demand-versus-capacity gap for cold plates, CDUs or fittings, or product-level pricing. Vertiv's Q3 results on Oct 28 are the next chance.
New here? Skip to Background below for the basics. Coming back? Start with What changed.
This month
October 2026 · Updated Oct 5 · Next update after Vertiv's Q3 results
What changed since last month
First reading. From next month this section leads with what moved and why.
Scorecard
Warning sign | What we saw | Reading | Source |
Long waits | No primary data. Vertiv gave no lead times on its July call. Industry reports cite waits of a few months for some parts, but we don't score them. | ⚪ Unknown | |
Orders above supply | Not confirmed. Vertiv reports a "very strong backlog," and says some Q2 revenue shifted because of project timing and "temporary supply chain dynamics." It didn't say which products, or that demand exceeds what it can make. | ⚪ Unknown | |
Prices going up | Not measurable for cooling. Vertiv says "Pricing continues to be favorable" and expects positive price-cost in 2026, "including the current impact of tariffs and countermeasures." That covers the whole company, including power equipment and tariff recovery, not cooling products alone. | ⚪ Unknown | |
New capacity not enough | Not established. Vertiv: "Additional capacity is online globally," citing Malaysia, large Americas plant expansions and more chiller capacity in Europe. Expansion shows makers are responding, not whether it matches demand. | ⚪ Unknown |
Score: 0 red, 0 green, 0 mixed, 4 unknown = ⚪ Not established. Fewer than two signs are confirmed either way. Four unknowns, so confidence is low.
Dates to watch
Oct 27 (expected): Modine Q2 FY27 results. Data center cooling sales and capacity.
Oct 28 (expected): Vertiv Q3 results. Watch orders, backlog, any lead times, and whether the supply chain timing issues cleared.
Oct 30 (expected): nVent Q3 results. Liquid cooling orders.
Nov 3 (expected): Eaton Q3 results. First full read on Boyd Thermal under Eaton.
Ongoing: NVIDIA's next-generation rack ramp, which needs more cooling per rack.
"Expected" dates come from earnings calendars. The company hasn't announced them yet.
Status history
- Oct 2026: ⚪ Not established (4 unknown), low confidence. First reading.
Background
Reference. Updated when the facts change, not every month.
What it is
AI chips run so hot that air alone can't keep up. In the most common setup, direct-to-chip cooling, a metal cold plate sits on each chip and coolant flows through channels inside it, absorbing the heat.
A coolant distribution unit (CDU) pumps that coolant around a closed loop and controls its temperature. It keeps the liquid above the room's dew point (the temperature at which moisture would condense on pipes) and passes the heat on through a liquid-to-air or liquid-to-liquid heat exchanger. The building then rejects the heat outside with chillers, dry coolers or cooling towers.
Where it sits: Hot GPU → coolant flowing through the cold plate → quick-connect fittings and manifolds → CDU (pumps, temperature control, heat exchanger) → facility water loop → chillers, dry coolers or cooling towers outside
The alternative is immersion cooling, where whole servers sit in a non-conductive fluid. It is still a small share of the market.
The newest high-density AI racks are built for liquid cooling, so cooling demand rises with each generation of chips.
Where it could get tight
Each part has its own suppliers, so a shortage in one wouldn't mean a shortage in all. None of these is confirmed as a constraint by a maker.
Part | What could constrain it |
Cold plates | Precision-machined copper, often redesigned for each new chip. Industry reports cite lead times of a few months. |
CDUs | Larger units are needed for higher-power racks. Made by several suppliers, including Vertiv and nVent. |
Quick-connect fittings and manifolds | Must not leak, so they need very precise machining and qualification. Industry reports flag them as a possible pinch point. |
Facility heat rejection | Chillers, dry coolers and cooling towers are large equipment shared with the wider building and industrial market. |
Immersion and two-phase fluids | Specialty non-conductive fluids from a small number of chemical makers. Only matters for immersion and two-phase systems. |
How big is it?
- Vertiv (whole company, not just cooling) expects about $14.0B of 2026 sales, with about 31% organic growth.
- Big players have bought in. Eaton completed its $9.5B purchase of Boyd Thermal on Mar 12, 2026. When the deal was announced, Boyd's 2026 sales were forecast at $1.7B, of which $1.5B from liquid cooling. Ecolab completed its $4.75B purchase of CoolIT Systems in early July 2026.
Who wins, who waits
The effects below are our interpretation, not company statements.
Company | Likely effect | Why |
Wins | A leading data center cooling and power company. Raised 2026 guidance and reports favorable company-wide pricing. | |
Wins | Chillers, CDUs and liquid cooling hardware for data centers. | |
ETN, Ecolab (ECL), Trane (TT) | Wins | Eaton (via Boyd) and Ecolab (via CoolIT) bought their way in. Trane sells chillers. |
Auras (Taiwan: 3324), AVC (Taiwan: 3017), Delta Electronics (Taiwan: 2308) | Wins | Taiwanese makers of cold plates and cooling modules for AI servers. |
Mixed | Sells liquid-cooled servers, so demand helps. But it buys cooling parts, and higher part costs could squeeze its margins. | |
Data center builders | Mixed | Cooling adds cost per rack. We found no primary evidence on whether cooling supply is delaying projects. |
The takeaway: liquid cooling is growing rapidly and suppliers are expanding. The evidence so far doesn't show whether supply is keeping up or falling behind.
When does it end, and what could replace it?
- Already happening: capacity is expanding at Vertiv and across Asia, and large companies have bought cooling specialists.
- What would make it tight: next-generation chips pushing heat up faster than factories expand, or a single part such as fittings delaying rack shipments.
- Immersion cooling is an alternative design, but still niche.
How to read a change
Good easing
Makers report short or stable lead times while orders keep climbing.
Bad easing
Orders slow because data center building slowed. Vertiv's orders would show it first.
What would change our view
- Gets tighter: a maker reports long or rising lead times, says demand exceeds capacity, or a part such as fittings starts delaying rack shipments.
- Gets easier: makers report short lead times, or say capacity is ahead of orders.
- Price sign: product-level pricing for cooling, separate from tariffs and from power equipment.
Past scorecards
Each month the previous scorecard moves here, newest first.
- None yet. October 2026 is the first reading.
Evidence and sources
- Vertiv Q2 2026 call (Jul 29, 2026): "Pricing continues to be favorable. We expect positive price cost in 2026, including the current impact of tariffs and countermeasures"; "Additional capacity is online globally," with Johor (Malaysia), large Americas plant expansions and EMEA chiller capacity; "very strong backlog"; Q2 revenue timing shifts from project execution and "temporary supply chain dynamics"; no lead times given. Transcript
- Vertiv Q2 2026 release (Jul 29, 2026): 2026 net sales about $14.0B and about 31% organic growth at midpoint. Release
- How liquid cooling works (Vertiv white paper): a CDU "creates an isolated secondary loop"; keeps "liquid cooling supply temperature above the data center dew point to prevent condensation"; heat removal through "either a liquid-to-air or liquid-to-liquid heat exchanger within the CDU." White paper
- Eaton–Boyd Thermal: announced Nov 3, 2025 at $9.5B, with Boyd 2026 sales forecast at $1.7B, $1.5B from liquid cooling (announcement); completed Mar 12, 2026 (completion).
- Ecolab–CoolIT: $4.75B; completion announced Jul 2, 2026. CoolIT
- Not scored (industry reports): lead times of roughly 12–24 weeks for cold plates and CDUs, and possible pinch points in fittings and fluids. The Cooling Report, Mar 31
Words used on this page
- Liquid cooling: removing chip heat with circulating fluid instead of air.
- Direct-to-chip cooling: liquid cooling where coolant flows through a cold plate on each chip.
- Cold plate: a metal plate mounted on a chip, with channels inside that coolant flows through.
- CDU (coolant distribution unit): the unit that pumps coolant around the loop, controls its temperature and passes the heat to the building's cooling system.
- Dew point: the temperature at which moisture in the air condenses into water.
- Heat exchanger: a device that moves heat from one fluid to another without mixing them.
- Quick disconnect: a fitting that lets coolant pipes be connected and removed without leaks.
- Manifold: the piping inside a rack that splits coolant to each server.
- Chiller, dry cooler, cooling tower: outdoor equipment that releases the heat from the building.
- Immersion cooling: submerging whole servers in a non-conductive fluid.
- Two-phase cooling: cooling where the fluid boils as it absorbs heat.
- Price-cost: how much price increases outrun cost increases.
- Rack: a cabinet holding many servers.
Invest Deeper · Educational research, not investment advice.
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