[Skip to Content]

Under Floor Air Distribution


Under floor air distribution systems supply conditioned air to an occupied space via diffusers in a raised floor. This system effectively maintains thermal comfort and indoor air quality levels.


O+M Tips

  • HVAC diffusers have a removable bucket trap that captures dirt and spills before they enter the underfloor space. Empty traps during normal janitorial service.

End of Life Tips

  • Usually reused by future occupants. If the mechanics fail consider recycling metal and plastic components.

For alignment with LEED Standards

  • Optimize Energy: Install HVAC systems that comply with the efficiency requirements outlined in the New Building Institute's Advanced Buildings Core Performance Guide Sections 1.4: Mechanical System Design, 2.9: Mechanical Equipment efficiency and 3.10:Variable Speed Control. Appropriate zoning and controls. OR, reduce design energy costs compared with the energy cost budget for regulated energy components described in the requirements of ANSI/ASHRAE.IESNA Standard 90.1-2007 AND demonstrate that HVAC system component performance criteria used for tenant space are 15% better than a system in minimum compliance with ANSI/ASHRAE.IESNA Standard 90.1-2007.