The DeltaStream is an adiabatic cooling unit that provides natural cooling and ventilation. It works by drawing hot outside air across the wetted desorption medium within. Then, the water in the medium evaporates and removes sensible energy from the air passing through it. The cooled air is then introduced into the facility where it lowers the overall interior temperature. This ensures that fresh, cool air is consistently supplied to the facility in a cost-effective way. You can think of the DeltaStream as a self-cleaning, ultra-hygienic, technologically advanced evaporative cooler.

This natural cooling unit has exceptionally low operating costs, especially when compared to air conditioning. In fact, it can be up to seven times more efficient than conventional a/c while still lowering temperatures 10° to 30° F below outdoor ambient conditions. It is designed for commercial and industrial applications, moving up to 16,800 CFM throughout the building. Each unit uses a direct drive variable speed motor to reduce maintenance while maintaining efficiency and flexibility.

Learn more about Hybrid Ventilation in our blog post here.


Standard Features
  • Construction: Mill-Finish Aluminum
  • Motor: Direct drive variable speed motors
  • Medium: High efficiency cellulose medium
  • Tubing: Polypropylene tubing
  • Mounting: Roof or ground mounting available
  • Curb: Included
  • Weight: 520 lbs. dry, 740 lbs. operating


Optional Features
  • Ducting & fan package
  • E.C. Motor fitted on system fan
  • Maintenance packages available
  • Automated controls
  • Building management system integration

Product Catalog

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Additional Downloads

Product Testing and Certification
Computer Modeled, Factory Tested, & Field Tested
Product Mounting
Curb mounted via an integrated curb cap. Can be installed on the roof or at ground level.