Employing the newest filter construction and fume hood monitoring technology, Ductless Fume Hoods provide an eco-friendly fume hood solution that will save your laboratory $5,000 to $6,000 in energy savings annually. These Ductless Fume Hoods provide protection from fumes, odors, and particulates. No ductwork is required, which is ideal for temporary applications or where mobility or shared use is required. They feature digital display of face velocity and filter saturation levels, postless corner construction for better viewing, and are equipped with secondary safety filters and removable plastic spill tray for easy cleanup. These units exceed the requirements of OSHA, Z9.5, and ASHRAE performance standards.
Ductless hoods are primarily used for light use and low risk laboratory jobs. They work by passing the contaminated air through a filter and then redistributing it back into the lab. Because it is redistributed back into the lab, there is no need to exhaust the air outside requiring an additional air supply. Ductless fume hoods typically utilize charcoal-based filters to absorb the fumes and prevent them from dispersing back in the laboratory air.
These newer generation of ductless hoods operate on the same premise of filtering the contaminated air and dispersing it back into the lab. What makes them different is the technology and chemistry they use to filter the contaminated air. The newer styles can handle more chemicals and hazardous fumes than their predecessors. Both ductless and filtered fumehoods do not require mechanical ductwork making both popular choices for energy efficiency.