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Comparison Bosch Cleann n BGS 05A225 vs Bosch Cleann n BGS 05A221

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Bosch Cleann n BGS 05A225
Bosch Cleann n BGS 05A221
Bosch Cleann n BGS 05A225Bosch Cleann n BGS 05A221
Outdated ProductOutdated Product
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Typeconventionalconventional
Cleaning typedrydry
Dust collectorcyclone (bagless)cyclone (bagless)
Specs
Motor power700 W700 W
Dust collector capacity1.5 L1.5 L
Fine filterHEPA 12HEPA
Nozzles included
Nozzle functions
combined (floor/carpet)
crevice
dust brush
combined (floor/carpet)
crevice
dust brush
Power source
Source of powermainsmains
More specs
Noise level78 dB78 dB
Tube typetelescopictelescopic
Power cord rewind
Dimensions (HxWxD)31.4x26.8x38.1 cm38x31x27 cm
Weight4.4 kg4.4 kg
Color
Added to E-Catalogfebruary 2019may 2018

Fine filter

The presence of a HEPA fine filter in the vacuum cleaner; also in this paragraph, the specific class of this filter is often specified.

HEPA (High Efficiency Particulate Absorbing) filters are designed to purify the air from the smallest mechanical contaminants — up to tenths of a micron in size. It allows you to trap not only fine dust but even bacteria. For comparison: the size of most bacteria starts at 0.5 microns, and the effectiveness of HEPA filters is evaluated by the ability to retain particles with a size of 0.1 – 0.3 microns. The most advanced such filters ( class 13 and above) are able to remove more than 99.9% of these particles from the air. Here is a more detailed description of the different classes:

— HEPA 10 – traps at least 85% of particles with a size of 0.1 – 0.3 microns;
— HEPA 11 – at least 95% of such particles;
— HEPA 12 – not less than 99.5%;
— HEPA 13 – not less than 99.95%;
— HEPA 14 – not less than 99.995%;

Note that pollution with a size of 0.1 – 0.3 microns is the worst-kept by HEPA filters, so with particles of other sizes (both larger and smaller), the efficiency of such elements will be even higher.

Regarding the choice for this parameter, it is worth noting that, in fact, it does not always make sense to pursue a high filtration class. For example, during wet cleaning with a washing vacuum cleaner (see abov...e), the HEPA filter, in fact, is not needed at all (in many models, it is recommended to remove it altogether for such cases). So if you plan to use such a vacuum cleaner mainly for washing, you can ignore this parameter. Another specific case is industrial units (see "Type"): they are often used for rough cleaning of large debris, where thorough air filtration is not required.
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