Redefining zero water cooling for next-generation data centers with Endeavour

In the data center industry, speed and efficiency are essential. As workloads scale rapidly — driven by AI and high-density computing — operators are under increasing pressure to deliver performance while reducing energy use and environmental impact.

Endeavour, together with its subsidiary ThermalWorks, is meeting that challenge head-on. 
Their goal is to help data centers achieve industry-leading PUE — without relying on evaporative cooling or significant water consumption.

“Our ambition is that data centers become major community assets that are water positive, carbon neutral, and provide stability for the grid,” says James Feasy, Senior Director of AI Infrastructure, Endeavour.

Delivering on this vision requires more than incremental gains. It demands a fundamentally different approach to cooling — one that eliminates water use while maintaining performance, scalability, and reliability.

“We are able to provide industry-leading PUE without the requirement to directly evaporate any water,” says Feasy.

To engineer this solution, Endeavour partnered with Danfoss. 

With Endeavour, we built a close, engineering-led collaboration focused on end-to-end system optimization.

By combining Endeavour’s system designs with our broad data center portfolio and solutions expertise, our teams co-developed a zero-water cooling approach designed for high-density and AI-driven environments.

Working side by side — from early design through deployment — our teams continuously refine performance, efficiency, and reliability.

This collaborative model enables:

• System-level optimization across components and architecture.
• Faster innovation cycles and deployment readiness.
• Solutions tailored to hyperscale, colocation, and enterprise requirements. 

Through ongoing co-creation, Endeavour and Danfoss are pushing the boundaries of data center cooling performance.

Joint engineering sessions — including technical workshops and innovation sprints — have led to new ways of designing hybrid cooling systems.

One outcome our teams identified was a significant efficiency opportunity: the zone chiller concept.

“By optimizing primarily for liquid cooled loads and developing a new product to cool the remaining air sections, we could deliver over a 30% reduction in energy usage,” says Feasy.

Our collaborative approach delivers:

• Reduced energy consumption.
• Zero ongoing water use operation at scale.
• High-performance cooling for AI-driven workload. 

Together, Endeavour, ThermalWorks, and Danfoss are establishing a new benchmark for water-free cooling — combining performance, efficiency, and scalability for next-generation data centers.