Efficient Air Dehumidification Can Save 15%-50% of Cooling Energy in Commercial Buildings

Wale Odukomaiya, Alex Bulk, Eric Bonnema, Prateek Shrestha, Khan Cu, Paul Norton, Jim Meacham, Gregg Harrington

Research output: NRELPoster


Current approach to dehumidification in commercial buildings with chilled/hot water AHU systems is to overcool return + supply air to dewpoint, and then reheat before supply to zone. This is energy inefficient, with reheat often being gas-fired. To reduce energy consumption, building operators will often operate at little-to-no outside air, sacrificing IAQ. Decarbonizing commercial buildings requires solutions to reduce and fully electrify dehumidification energy consumption. The Altaire ADAPT and Conservant HEDS systems aim to solve this problem by decoupling humidity control from cooling reduces energy consumption while enabling improved IAQ management.
Original languageAmerican English
StatePublished - 2023

Publication series

NamePresented at the 2023 Department of Energy (DOE) Building Technologies Office (BTO) Peer Review, 24-28 April 2023, Arlington, Virginia

NREL Publication Number

  • NREL/PO-5500-85720


  • commercial buildings
  • dehumidification
  • field demonstration
  • separate sensible and latent cooling


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