700+ safety validated chemicals
Multiple 3rd-party certifications
$3,900–$6,700 annual savings per replaced hood
Trusted since 1968
Installed in 5000+ institutions worldwide
Up to 94% lower cost to operate
GREENFUMEHOOD®3 FILTRATION TECHNOLOGY
The filter that changed laboratory design
Neutrodine®Unisorb technology captures solvents, acids, and bases simultaneously. Conventional activated carbon can’t do that. Over 700 validated chemicals. Zero emissions. The most advanced molecular filtration ever built for fume hoods. Available for your facility.
700+ validated chemicals
Handles acids, bases & solvents together
Up to 48-month filter life
AFNOR NF X 15-211 certified
<1% TLV at exhaust
96% energy savings vs. ducted
99.995%
Particulate efficiency (HEPA H14)
500+
Global installations
25%
Smaller HVAC system burden
DUCTLESS FUME HOODS
CHEMICAL CONTAINMENT anywhere
Stop venting your budget. Ductless fume hoods protect staff from 700+ chemicals, including formalin, powders, acids, and small-volume solvents. Filtered, monitored, safe, responsible
Save thousands of budget dollars annually vs. ducted
Install in hours, not days
ANSI/ASSP Z9.5-2022 compliant
700+ chemicals validated
Real-time safety monitoring
Move and reconfigure anytime
94%
Lower operating cost
2–4 yr
Typical payback via savings
< 50 dB
Operating noise (like your fridge at home)
Get the answers you need in under a minute.
Most manufacturers force you to dig through generic product pages with incomplete information before contacting a sales rep who isn’t an expert, isn’t experienced in your application, and sells at you.
Our goal is always to help first and make your job less challenging. If we have to sell at you, you shouldn’t be investing budget with us.
The AI chatbot in the bottom right corner of every page on our website is trained on tens of thousands of applications, complex chemistry, and every piece of technical information on our equipment and filters.
Ask it your questions, get everything you need the instant you need it, and the chatbot will connect you with your local Erlab rep only when you ask.
Trusted by leading labs in the USA and beyond
INDUSTRIES
Built for the people who live in these labs.
Every industry has its own chemistry, its own compliance requirements, and its own reasons for caring about what’s in the air. Find the labs that look like yours and follow their lead.
Universities
Teaching labs, research benches, and campus buildings that weren’t designed for modern HVAC loads, or have maxed out HVAC capacity.
Clinical labs
Formalin, xylene, and PCR work that needs contamination control and documentation your CAP or CLIA surveyor can see.
Biotech & Pharma
QC stations, compounding rooms, and GMP spaces where documented performance matters more than airflow alone.
Industrial QC / R&D
Repetitive chemistry, solvent handling, and materials testing where predictable equipment beats custom builds.
Forensics
Evidence handling, fingerprint development, and DNA work that protect chain of custody from contamination.
Food and Beverage
Sensory analysis, quality control, and process lab work that keeps cross-contamination out of your results.
Don’t see your industry? Talk to a Specialist
We probably already have an install base in your industry and can help find the right solution
FOR YOU
Documentation for your department
For EH&S or Sustainability departments, the info you need to approve a transition to ductless is available right now.
SUSTAINABILITY
Got a Shut the Sash program? Replacing ducted with Captair is the next move.
Ducted hoods cost $4,600 to $9,300 per year to operate. Captair ductless hoods cost $700 to $2,600. That’s $3,900 to $6,700 in annual savings per replaced hood, a 2 to 4 year payback, and a measurable Scope 2 reduction in your reporting.
$136kAnnual savings · Rochester
EH&S
Ductless doesn’t always replace ducted, but it’s safe in far more applications than you think.
Current ductless standards (NFPA 45:2024, ANSI/ASSP Z9.5-2022, ASHRAE 110, AFNOR NF X 15-211) are built into every Erlab installation. Chemical validation, containment test results, and monitoring logs come standard, before your review even starts.
700+Chemicals validated
THE PRODUCT UNIVERSE
Chemical and particulate filtration equipment for labs.
Many product categories, one philosophy. Every piece of equipment is designed to protect operators without demanding ductwork, roof penetrations, or HVAC modifications. If filtration isn’t the right fit, we’ll tell you before you buy.
Ductless Fume Hoods
- Histology and pathology formalin work.
- Powder weighing with HEPA balance enclosures.
- Teaching labs and QC benches.
- Leased buildings and historic spaces where roof penetrations aren’t an option.
- Any lab where chemistry is known and consistent.
Secure Weighing Stations
- API powder handling in pharma QC.
- Nanomaterials and hazardous dust work.
- Compounding pharmacies and materials testing.
- Any balance application where operator protection and analytical stability both matter.
Chemical storage cabinets
- Acid storage in teaching labs.
- Solvent segregation in pharma QC.
- Formalin storage in pathology.
- Ammonia storage in industrial R&D.
- Any inventory where vapors leak, corrode, or trigger inspection questions.
PCR Workstations
- DNA and RNA extraction.
- Clinical diagnostics and pathogen screening.
- Forensic sample preparation.
- University molecular biology teaching.
- Any workflow where false positives from contamination
- are unacceptable.
HALO Air Purification
- Classrooms, offices, clinics, labs, and occupied spaces where HVAC moves air but doesn’t clean it.
- Real-time air quality monitoring included.
- Ceiling-mounted H14 HEPA with Carbon AX for VOCs.
- Installs flat on ceiling or in tile squares.
YOUR COLLEAGUES TRUST DUCTLESS
What labs say after the install.
Service from the representative was fantastic. I received the complete analysis of my experimental work and needed approval from the scientific team prior to purchasing the hood. So I feel safe using the hood for the applications in my research lab. When I received the hood, it was easy to set up. The hood is also very easy to use. I would recommend purchasing the stand to support the hood.
Jessica Fortin
Assistant Professor
Purdue University
Before getting the units, our exposure levels for formalin and xylene were over the short term exposure rate and the smell was awful causing staff to have headaches. We have had them in place now for 9 months and are extremely happy with them. There is no smell of formalin or xylene in the air. We retested our exposure rates and they were almost ZERO! These units are working beyond my expectations!
Kaycee McCoy
Cytotechnologist
University of Virginia Health System
For a ductless laboratory, it works really well. The customer service on this equipment exceeds all expectations. We were assisted from initial set up to adjustments and frequent monitoring to ensure our equipment is up to standard.
Irvin Vides
Lab Staff
Central Coast Agriculture
The Captair 321 Smart is a great hood which meets and exceeds our every need. Very easy to install ourselves and sufficient space for a new and emerging compounding practice. The ability to monitor the hood remotely is great and easy-to-use. We’ve been using the hood for 3 weeks now and no issues at all.
Bhavik Mistry
Pharmacist
Queenston Pharmacy
SERVICE FOR YOUR DUCTLESS EQUIPMENT
Proactive service is better than reactive. But we help with both.
The U.S. Department of Energy has found that reactive maintenance costs 3 to 5 times more per event than scheduled service. Erlab’s proactive service options plus lifetime warranty keep your operating costs predictable. Take the risk out of your equipment investment.
FOR THE LABS THAT WANT TO STOP PAYING EMERGENCY RATES
Erlab Service Plans
Installation, filter replacement, preventative maintenance, on-call repair, and full-coverage extended warranties. Service plans cover every Erlab model sold in the United States. Proper maintenance extends equipment life by up to 40 percent and scheduled service catches worn gaskets and sash tension issues before they become shutdowns.
FOR THE LABS WITH A DUCTED HOOD THAT JUST FAILED
Fume hood repair
When a ducted fume hood repair quote involves ductwork, roof penetrations, or HVAC rebalancing, a new Captair ductless hood often costs less than the repair itself. You end up with new equipment that costs up to 94 percent less to operate, predictable filter costs, and no aging infrastructure to maintain. We’ll tell you directly when a ductless replacement makes sense and when it doesn’t.
01
Reactive maintenance costs 3–5x more per event
02
Planned maintenance saves 12–18% in total costs
03
Scheduled maintenance extends equipment life 20–40%
04
Facilities relying on reactive service spend 51.8% more
FOR ARCHITECTS AND DESIGNERS
Designing a lab? Captair Ductless Fume Hoods change what’s possible and help you win more bids.
Ductless fume hood filtration removes ductwork from the critical path of laboratory design. No roof penetrations. No make-up air systems. 25% smaller mechanical rooms. Faster project timelines. And case studies on real projects where these numbers translated into real results.
Wellesley College
Wellesley, MA
- Renovation, 213,000 sq ft, 39 filtered fume hoods
- $4 million+ projected 20-year net present value
- 25,000+ CFM of make-up air eliminated
- Supports campus carbon neutrality by 2040
ARCHITECT: Skidmore, Owings & Merrill
ENGINEER: BR+A Consulting Engineers
University of Rochester
Rochester, NY
- Organic chemistry lab renovation, 2,400 sq ft, 13 filtered fume hoods, older building
- $136,100 annual operating savings realized
- $36,000 NYSERDA rebate approved
- 32,727 kWh/year electricity savings
ARCHITECT: In-house
ENGINEER: DGA Builders
Lafayette College
Easton, PA
- Rockwell Integrated Science Center, 103,000 GSF, 11 filtered fume hoods
- LEED Platinum certification
- American Institute of Architects COTE Top 10 sustainable architecture award winner
- 73% energy reduction vs. 2030 baseline
ARCHITECT: Payette
ENGINEER: BR+A Engineers
Framingham State University
Framingham, MA
- New construction, 68,000 GSF, 49 filtered fume hoods
- 25 percent smaller mechanical systems
- $330,000 net capex savings
- $24,500 annual net opex savings
ARCHITECT: Ellenzweig
ENGINEER: BR+A Consulting Engineers
Butler University
Indianapolis, IN
- Chemistry lab renovation, 14,500 sq ft, 30 GFH3 + 12 Captair + 1 HALO
- $50,000+ annual operating savings
- $66,000 net construction savings (10 percent reduction)
- 3 months faster timeline (27 percent reduction)
ARCHITECT & ENGINEER: BSA LifeStructures
Bristol Community College
Fall River, MA
- New construction, 50,600 GSF, 13 filtered fume hoods
- Positive net energy (-13 EUI)
- Zero Net Energy certified
- LEED Platinum, American Institute of Architects COTE Top 10 award winner
ARCHITECT: Sasaki Associates
ENGINEER: BR+A Consulting Engineers
Designing a lab right now?
Send us floorplans and we’ll model the savings before you spec.
STILL NOT SURE WHERE TO START?
Send us your chemical list.
We’ll run it against our validated filtration database of 700+ chemicals and tell you whether ductless fits your work. If it doesn’t, we’ll say so.
