Trane commercial expanded its Horizon Outdoor Air Units (OAU) product line. The Horizon OAU series uses a technology, addressing the occupant health, property damage and energy efficiency problems associated with using untreated outside air to supply building ventilation needs.

Trane has completely redesigned the 10- to 30-ton platform to deliver 100-percent outdoor air without associated humidity issues.

Trane says high occupancy spaces pose a particular challenge, because sensible and latent loads do not peak at the same time. In most climates, the result is elevated indoor humidity at part-load conditions.

By dehumidifying outdoor supply air before it is delivered to the interior space, latent loads are greatly reduced, providing optimal comfort and promoting energy efficient operation, says Trane.