Are ductless fume hoods safe?
Sarah Oconnor
Updated on April 23, 2026
Advanced ductless carbon filtration technology offers a safe, high performance alternative to conventional ductless fume hoods for a broad range of applications. Environmental Benefits. Air Science ductless fume hoods isolate and trap chemical vapors to prevent ecological impact through release into the environment.
How much is a ductless fume hood?
Benchtop Ductless Fume Hoods
| Filters | Description | Price |
|---|---|---|
| A11-FI-H12 | HEPA Filter 99.97% @ .3µm Particles | $290 |
| A11-FI-U12 | ULPA Filter 99.99% @ .12µm Particles | $570 |
| A11-FI-C12 | Activated Charcoal Carbon Filter for General Purpose | $310 |
| A11-FI-C12* | Activated Carbon Filter for Acid Gasses | $410 |
What are ductless fume hoods used for?
Ductless fume hoods, sometimes called carbon-filtered enclosures or filtered fume hoods, are self-contained, filtered laboratory enclosures that remove hazardous fumes, vapors and particles from the laboratory. Unlike traditional fume hoods, installation costs are very low and no ductwork is required.
Do fume hoods suck air from the room?
Instead of ventilating harmful fumes through a duct, ductless fume hoods use filtration to remove harmful gases from the air. The air never leaves the building; instead, once it is filtered, it can be safely released back into the lab environment.
What is the difference between ducted and ductless fume hood?
Ducted fume hoods can be filtered or unfiltered depending on the design and application. Ductless fume hoods contain filters which clean contaminated air and recirculate it directly back into the laboratory. No additional ductwork is required to exhaust air to the outside.
What is a ductless fume hood?
Ductless Fume Hood is a viable alternative to conventional fume hoods. This type of fume hood utilizes carbon or HEPA filtration to protect laboratory personnel from toxic chemical fumes, odors, and particles. This cabinet is equipped with Nanocarb™ filters which removes chemical vapors from the workzone.
Why are fume hoods so expensive?
–Many factors are considered when pricing a fume hood. Special features and add-ons will drastically drive the price up or down. For instance, a fume hood that will experience explosions compared to one that is used for spill containment, pricing will differ.
Do fume hoods filter air?
The fume hood draws away harmful vapors so lab employees can work with chemicals without the risk of accidental exposure. The air is extracted from the fume hood and filtered to remove dangerous vapors, and then either exhausted outside of the building or recirculated back into the lab.
Do fume hoods vent outside?
Traditional “ducted” fume hoods are connected to existing facility ductwork and pull contaminated air through the hood and direct it outside the facility and into the atmosphere. No additional ductwork is required to exhaust air to the outside.
Why should you not open laboratory windows?
Exterior windows with movable sashes are not recommended in laboratories. Wind blowing through the windows and high-velocity vortices caused when doors open can strip contaminants out of the chemical hoods and interfere with laboratory static pressure controls.
What is the primary function of a fume hood sash?
The sash works as a blast shield to provide protection and containment in the event of a fire. In the case of an explosion, sashes are designed to “spiderweb” instead of shattering, keeping those in the area safe from glass and chemicals.
How much does it cost to install fume hood?
“How much should I expect to pay a contractor to install my range hood?” In general, plan on about $200 to $500 depending on the complexity of your installation. This includes the labor cost of installing a new vent hood and does not include parts, adding or modifying ductwork, or electrical work.
What is a ductless fume hood and how does it work?
Typically used in locations where outside ventilation isn’t possible or will be costly to install, the ductless fume hood produces a recirculating air pattern filtered through high efficiency air filters and requires no external ducting or venting. What is a Ductless Fume Hood?
What is the purair advanced series ductless fume hood?
The Purair Advanced Series ductless fume hoods are available in 7 standard sizes in metal or polypropylene construction. This Series of high-efficiency products is designed to protect the user and the environment from hazardous vapors generated on the work surface.
What is a Downflow fume hood?
DWS Downflow Workstations are ductless fume hoods designed to protect the user and the environment from hazardous vapors generated on the work surface. Unrestricted front and side access permits applications requiring complex user involvement. Downward airflow in the chamber protects the operator.
What are the benefits of a fume hood?
Ductless fume hoods by Air Science ® protect your personnel and the environment from toxic or volatile chemicals so that you can concentrate on what matters most: your work. Continuous airflow across the work surface draws contamination away from the user, recycling clean air back into your laboratory.
