Data center cooling companies: air, chillers and liquid cooling

Cooling is chosen by rack density: air cooling with CRAC or CRAH units up to roughly 20–40 kW per rack, rear-door heat exchangers above that, and direct-to-chip or immersion liquid cooling for AI halls. Below: the technology map, cost drivers, a checklist and 7 vendors that state data center cooling products on their own sites.

Which cooling technology fits which rack density?

Air cooling with CRAC/CRAH units, hot/cold-aisle containment and free-cooling chillers handles most enterprise halls up to roughly 20–40 kW per rack. Rear-door heat exchangers extend air to around 50–70 kW. Direct-to-chip liquid cooling with coolant distribution units (CDUs) is the default for current AI accelerators at 80–130+ kW per rack, and immersion cooling is used for the densest or sealed deployments. The right answer depends on the servers you will actually install; vendors size the plant from the equipment list, not the other way round.

Technology map

Room and row air cooling: CRAC (direct expansion) and CRAH (chilled water) units, containment, variable-speed fans.
Heat rejection: chillers, dry coolers, evaporative and free-cooling economizers — where PUE is won or lost.
Rear-door heat exchangers: liquid to the rack door, air to the servers, a bridge for mixed halls.
Direct-to-chip: cold plates on CPUs/GPUs, rack manifolds, CDUs; needs a facility water loop.
Immersion: servers submerged in dielectric fluid in tanks or pods; highest density, most change to operations.

What drives the cost

Design density and the share of liquid-cooled load — CDUs, manifolds and cold plates are per-rack costs.
Climate: hours of free cooling per year decide the chiller size and the operating cost.
Water availability and the WUE target — evaporative systems trade water for electricity.
Redundancy of the mechanical plant (N+1, 2N) and the controls integration.

Buyer checklist

Start from the server list and the OEM's cooling requirements (inlet temperature, flow, fluid).
Ask vendors for reference installations at your density and climate.
Confirm service coverage and spare-parts lead times in your country.

Companies offering data center cooling

Recorded from each company's own website on 2026-09-26: what it states it does, where it operates and which certifications it names. Not a ranking; no company pays for inclusion. Missing companies were not yet checked.

Company	Headquarters	Regions	Stated services	Certifications named	Source
Vertiv	Westerville, USA	Global	Room, in-row and rack cooling, liquid cooling, heat rejection, free-cooling chillers, evaporative free cooling — the thermal chain from chip to heat reuse	not stated	Vertiv — Thermal management · 2026-09-26
STULZ	Hamburg, Germany	35 subsidiaries, 10 production sites in America, Africa, Asia, Europe and Oceania	Data center and server room cooling, chillers, liquid cooling, air handling units, monitoring	not stated	STULZ · 2026-09-26
Schneider Electric	Rueil-Malmaison, France	Global	Uniflair cooling systems for critical IT environments; liquid cooling architecture for high-compute workloads	not stated	Schneider Electric — Data centers and networks · 2026-09-26
Airedale by Modine	Leeds, UK	Global facilities	Chillers, liquid cooling, controls (IQity, Cooling AI) for data centers	not stated	Airedale by Modine · 2026-09-26
CoolIT Systems	Calgary, Canada	Manufacturing in North America and Asia; 300+ data centers worldwide	Direct-to-chip liquid cooling: cold plates, coldplate loops, rack manifolds, coolant distribution units, technology cooling systems, professional services	not stated	CoolIT Systems · 2026-09-26
LiquidStack	Carrollton, Texas, USA	Global, with manufacturing and service via Trane Technologies	Direct-to-chip liquid cooling: CDU-1MW and GigaModular CDU	not stated	LiquidStack · 2026-09-26
Submer	Barcelona, Spain	NA, EMEA and APAC; 3 R&D labs	Immersion and advanced liquid cooling: SmartPod EVO and EXO modular systems for high-density AI infrastructure	not stated	Submer · 2026-09-26

FAQ

Does Coloprice provide data center cooling?

No. Coloprice is an independent data portal. This page explains the service and lists companies recorded from their own websites; a brief submitted below is routed to matching providers under a disclosed referral arrangement. Rankings and the Coloprice Score are never for sale.

How were the data center cooling companies selected?

Each entry was recorded from the company's own website on the date shown, capturing what it states it does, where it operates and which certifications it names. The list grows as companies are checked; absence means not yet checked.

How do I get comparable quotes for data center cooling?

Send the same brief to several providers: scope, location, asset or rack count, timeline, compliance requirements and the deliverables you expect (certificates, validation reports). Ask for line-item pricing so you can compare like for like.

Get quotes for data center cooling

One brief, several providers, same terms. Coloprice routes it and stays independent — no company pays for position.