How does Easi Breezi test its filtration?

In short: Easi Breezi is a filtered-airflow unit for scooter and motorbike riders. It mounts on the bike, runs off the bike's battery, and pushes air through a replaceable HEPA filter and a tube into your helmet, entering under the chin bar. The filter media is supplier-rated at 95.5% or better at the hardest-to-catch particle size, and the unit has passed an independent EMC test at an accredited laboratory (report QCT26FR-1717E-01).

  • Filter: HEPA media declared by the supplier as H11 to EN 1822, at least 95.5% capture at the most penetrating particle size (MPPS).
  • Our own bench test: filter media measured at 97.07% to 97.64% efficiency on a TSI 8130A tester (details below).
  • What it catches: particles such as PM2.5, soot and dust. It does not remove gases such as benzene or NO₂.
  • Electronics: passed EN 50498:2010 EMC testing at an accredited third-party lab.
  • The honest limit: the 95.5% figure is the media rating. What reaches you on the road also depends on airflow, speed and how your helmet fits.

How well does the filter capture fine particles?

Our filter supplier declares the media as H11 under the European filter standard EN 1822, with at least 95.5% capture at the most penetrating particle size. EN 1822 rates every filter at that hardest size, which is why the figure is honest: larger and smaller particles are caught more easily. In the current edition of the standard (EN 1822:2009), the class that captures at least 95% is named E11; H11 is the older name that the industry still widely uses.

Where the filter sits on the EN 1822 scale
E10 E11 E12 H13 H14 U15 100 10 1 0.1 0.01 0.001 0.0001 Particles passing through the filter (penetration %, log scale). Lower is better. Supplier declared: 4.5% passing (95.5% capture) Our bench test: 2.36% to 2.93% passing
Each step to the right is a tenfold drop in the share of particles getting through. The class names follow the current EN 1822:2009 edition.

What did our own filter testing show?

We put our filter media through a bench test on a TSI Model 8130A automated filter tester. The machine challenges each sample with its standard test aerosol, made of particles smaller than 2.5 microns, and measures how much gets through. We tested four samples, one pass each, at about 32 litres a minute.

Test method
Equipment TSI Model 8130A automated filter tester
Test aerosol The machine's standard aerosol, particles under 2.5 microns
Samples 4 flat filter-media samples, single pass each
Airflow 31.9 to 32.0 litres per minute
Result Efficiency = 100% minus penetration
Filter efficiency, four samples (TSI 8130A, single pass)
0% 25% 50% 75% 100% 97.07% 97.08% 97.64% 97.57% Sample 1 Sample 2 Sample 3 Sample 4 Mean of four samples: 97.34% (range 97.07% to 97.64%)
The vertical axis starts at zero, so the bars show the true scale. That is roughly 97 of every 100 test particles stopped in a single pass.

Watch the bench test on video, from the sample clamping to the printed result:

TSI 8130A automated filter tester running a single-pass efficiency test on a filter sample, then the printed results slip
The sample is clamped in the tester, then the machine prints the measured efficiency.

What do our smoke tests show?

We also ran smoke tests on real helmets so you can see the airflow for yourself. Watch them on our YouTube channel:

A regular helmet in smog, with no filtered airflow.
The same test with Easi Breezi running.
Smoke test in a half-face helmet.
Fog test: clearing a misted visor.

Why does the 0.3 micron size matter?

Filters are least efficient at roughly 0.3 microns. PM2.5 covers everything up to 2.5 microns, so a filter rated at its weakest point performs at least that well across the particles that matter most for your lungs.

Has the unit been independently tested?

Yes, for electromagnetic compatibility. Because the unit connects to your bike's electrical system, it was tested against EN 50498:2010, the European EMC standard for aftermarket electronics fitted to vehicles.

  • Laboratory: Shenzhen QC Testing Laboratory Co., Ltd (CNAS L8464, A2LA 6759.01)
  • Report: QCT26FR-1717E-01, 29 June 2026
  • Result: pass on all four test items, including ISO 7637-2 electrical transient tests at 13.5 V DC
  • Declaration of Conformity: EB-DoC-001, issued August 2026

Journalists and retail partners can request a copy of the EMC report or the filter media specification from solution@easibreezi.com.

How much air does it move?

The fan is a 12 V unit rated by its maker at 17.18 CFM (about 486 litres a minute) in free air. The filter and tube reduce that, so the air reaching your helmet is lower. In a factory end-of-line check we measured air leaving the tube at 2.4 m/s with the filter fitted.

Can I ride with it in the rain?

It is built for riding in the rain: the fan and the power button are IP67-rated components. We do not claim an IP rating for the whole unit.

What are the limits of a helmet air filter?

  • Airflow and fit matter. Filtered air enters under the chin bar and creates a steady flow of clean air in front of your face. A helmet is not a sealed mask, so some outside air still mixes in, especially at speed or with the visor open.
  • Gases are different from particles. HEPA captures particles (PM2.5, soot, dust). It does not remove gases like benzene or NO₂.
  • Ratings are lab figures. The 95.5% figure is the media rating, not a measurement inside your helmet on the road.

What has been tested so far?

Test Result
EMC test (EN 50498:2010) Pass
Filter media bench test (TSI 8130A, 4 samples) 97.07% to 97.64%
Filter media specification (H11 to EN 1822) On file, on request

Questions about any of these? Email solution@easibreezi.com.

The design is patent pending. See the product on the Easi Breezi unit page, or read the research on our rider air-quality blog.