Amazon Commits To New Moisture-Control Units That Could Cut Building Energy Use

Amazon has agreed to buy capacity in a novel ventilation module that its maker says strips far more humidity from outside air than conventional systems, a move the company expects will shrink energy demand across its facilities. The Seattle retailer has been running field trials in Houston for several months and recently reserved production over the next three years, the vendor said. The unit can extract roughly 100 pounds — about 45 kilograms — of water from incoming air every hour, reducing how hard air-conditioning systems must work and fitting into Amazon’s plan to reach net-zero carbon emissions by 2040.

Buildings in warm, humid regions often run their cooling systems colder than occupants find comfortable because removing moisture is a primary driver of air-conditioning settings. In other words, operators chill air to pull out water vapor, then sometimes have to warm it back up for comfort. That practice increases energy use and, in some cases, encourages microbial growth in poorly ventilated spaces. An independent HVAC analyst said the problem is widespread in commercial stock where ventilation and humidity control are treated as afterthoughts.

The device, a compact outdoor-air ventilation module that can replace legacy fresh-air equipment, relies on a wheel coated with a high-capacity drying material. As outside air flows through, the wheel captures moisture; the air then traverses a heat exchanger before entering the building. Exhausted stale air transfers heat back to the water-laden wheel, driving the release of the collected moisture so it can be vented outside and the desiccant regenerated. The company claims the design can be up to 2-to-1 more effective at moisture removal than many incumbent approaches.

The startup behind the product says the coating is related to a family of compounds recognized with a Nobel Prize in 2025. It won’t reveal the exact formula but is partnering with established HVAC manufacturers to make the modules fit into standard commercial systems, allowing one-for-one swaps of older units. The firm also reports a sales pipeline in the high eight-figure to low nine-figure range, driven by interest from large property owners seeking quick, plug-in improvements to energy use.

Energy experts welcomed the concept but urged caution about long-term costs and supply chains for the novel desiccant. "If the maintenance and replacement cycle proves manageable, this could materially lower cooling loads in humid climates," said a building-systems consultant who asked not to be named. Still, wider adoption will hinge on demonstrated durability and how easily the parts can be produced at scale.