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KNOKOO FES150S, 200 m³/h, three-stage filter review

A bench fume extractor sold for soldering and 5 W laser engravers, moving 200 m³/h through a pre-filter, H13 HEPA and activated carbon, each replaceable separately, with an alarm that warns when a filter clogs.

The bottom line A well-described bench extractor: airflow, three replaceable stages, noise and a clog alarm. Its own title sets its scale at 5 W engravers, and it leaves out the hose diameter that decides how it connects.

The FES150S listing, bullet by bullet

Six bullets: soldering and lead fumes drawn through pre-filter cotton, HEPA and activated carbon, each replaceable separately; a 100 W brushless DC motor moving 200 m³/h, H13 HEPA and high-iodine carbon capturing PM0.3 particles at up to 99.97 %; FCC, CE, RoHS and MSDS listed, with use named for soldering, lasers, 3D printing and nail studios; about 50 dB, 24-hour continuous operation and a motor life up to 70,000 hours; pressure monitoring with an audible clog alarm; and a fuse box beside the power switch with two 3 A fuses.

Airflow sized by KNOKOO’s own title

200 m³/h, named for 5 W laser engravers. The maker sets the scale itself. A larger diode or a CO2 cabinet produces more smoke over a larger area, and the listing gives nothing to judge the extractor against those.

What 99.97 % leaves unsaid

The figure is attached to PM0.3 particles and the H13 HEPA stage. The conditions behind it are not described, and the page does not rate how well the unit protects anyone breathing near a job; that is read in the maker’s documentation.

Filters as a running cost

Three stages replaceable separately and an alarm that says when: that is a practical design. Their prices are not on the page, and they are the cost that continues after purchase.

Availability

At the last look-up, the German, French, Italian and Spanish Amazon stores were asking 199 € to 258 €.

It is sold in the American and British Amazon stores as well, in their own currency, which the euro figures above leave out on purpose.

Every figure here is Keepa’s reading on the date this page was last updated. Stock and prices can change at any time.

Prices quoted in this text were read on 15 September 2026. The live price is at the top of the page.

Where it earns its place, and where it falls short

Strengths

  • Three filter stages that can each be replaced on their own, as the first bullet states
  • A pressure-based alarm that sounds when a filter clogs
  • A published noise level, about 50 dB, and continuous 24-hour operation stated

Compromises

  • Sized in the title for 5 W laser engravers, well below the larger machines in this catalogue
  • No hose diameter, pressure figure or filter prices
  • 99.97 % is stated without the conditions under which it was reached

Specifications

Airflow200 m³/h, title and second bullet
PressureAbsent from the listing — internal air pressure is monitored for filter life, and no figure is given
Filter stagesThree: pre-filter cotton, H13 HEPA and activated carbon, each replaceable separately, first and second bullets
Replacement costAbsent from the listing
Hose diameterAbsent from the listing
NoiseAbout 50 dB, fourth bullet
Named materialsSoldering fumes and lead fumes, with use named for soldering, lasers, 3D printing and nail studios; the title names 5 W laser engravers
Amazon referenceB0923MXXTS (same reference on 6 Amazon marketplaces)
EAN0608410795693

Questions makers ask before buying

Which lasers is it sized for?

The title names 5 W laser engravers and bench soldering. The listing gives no figure for larger machines.

How do I know when to change the filters?

The fifth bullet describes a system that tracks internal air pressure and sounds an alarm when a filter clogs; the maker asks for the blocked filter to be replaced promptly.