Every data center must solve the same fundamental challenge: removing the heat generated by computing at scale. How that heat is rejected to the environment is one of the most consequential design decisions a developer makes - for energy efficiency, for water consumption, and for the communities where these facilities operate. There are two broad approaches, and hybrid systems that combine attributes of both.
(1) Wet systems use evaporative cooling: water absorbs heat and is released into the atmosphere, delivering high efficiency, particularly in warm climates, but at the cost of water consumption.
(2) Dry systems rely entirely on air-cooled HVAC equipment, rejecting heat without consuming water at all, though typically with a larger land and energy footprint.
(3) Hybrid systems that dynamically adjusting cooling modes based on seasonal conditions and local environmental constraints.
Neither approach is universally superior. The right answer depends on the climate, the available infrastructure, and the resources most worth protecting in each location. CloudHQ designs to that reality, deploying dry systems where the environment allows, and using reclaimed or non-potable water sources where possible when evaporative cooling is the better trade-off for the community and the grid.
