AHRI has announced a new certification program  for DX-Dedicated Outdoor Air System Units, which condition outdoor ventilation  air independently from the building system, allowing for improved humidity  levels and greater energy savings. The scope of the program applies to 60 Hz  production models of dedicated outdoor air system units. The equipment in the  program is rated and tested in accordance with AHRI Standard 920, Performance Rating of DX-Dedicated Outdoor Air System  Units. The following ratings  are verified by this standard:
  • Moisture removal capacity (lbs of moisture/h)
  • Moisture removal efficiency (lbs of  moisture/kWh)
  As with all AHRI Certified products, performance  data will be available in the AHRI Directory of Certified Product Performance (www.ahridirectory.org). (Source: AHRI Update, October 2, 2014)