• Bosch corporate

The quietest bagless vacuum
cleaner on the market.

View Model: BGS5SILSG


Experience the quietest bagless vacuum cleaner on the market in our film.

Play the film for the Relaxx’x ProSilence 66

The Relaxx’x ProSilence 66 combines impressive cleaning power with a pleasantly low operating noise — why not see for yourself?


Noise comparison

Compare typical noises from everyday life with
the Relaxx'x ProSilence 66 and be amazed at how quiet vacuuming can be.



Lawn mower






Group discussion


Relaxx’x ProSilence 66


SilenceSound System™

Thanks to the latest SilenceSound System™, the Relaxx'x ProSilence,
at just 66 dB (A), is the quietest bagless vacuum cleaner from Bosch.

Sound controlled motor:
minimal motor vibrations

The special motor suspension in the Relaxx’x ProSilence 66 vacuum cleaner ensures that considerably less motor noise escapes.

Innovative SilentClean premium nozzle:
perfect cleaning results

A double joint ensures permanent contact with the floor, as well as thorough dust retention and impressive results on any floor. The SilentClean premium nozzle - one of the quietest floor nozzles on the market.

Silent airflow with sound reducer:
reduced air noise

The aerodynamic airflow of the Relaxx’x and the multi-layer design of the appliance cover provide a lasting reduction in air noise from the vacuum cleaner.



The Relaxx’x ProSilence 66 makes vacuuming relaxed in every regard.

Unbelievably quiet: 66 dB(A)

Thanks to the latest SilenceSound System™, the Relaxx’x ProSilence Plus is the quietest bagless vacuum cleaner from Bosch.

Intelligent self-cleaning with SensorControl

The intelligent self-cleaning system is fully automatic, ensuring that you get the optimum performance level from your Relaxx’x for many years.



A clear advantage of bagless vacuum cleaners is that no bag means no follow-up costs.

No follow-up costs

In bagless vacuum cleaners, centrifugal forces separate the dirt from the air flow in a separator before it is fed into a dust container that can be emptied. The advantage: Annoying follow-up costs for filter bags are no longer an issue and the dust container can be emptied as often as required.

High-tech filter materials

The Relaxx’x ProSilence 66 scores points with its high-tech filter materials; these last for the entire life of the appliance and can be easily cleaned with water as necessary.



Not just quiet, but also extremely powerful - thanks to the innovative RobustAir™ System and perfect airflow.

RobustAir™ System: top cleaning performance

The secret behind the deep cleaning performance of the Relaxx’x is the RobustAir™ System from Bosch. All the components that determine the level of performance of the bagless vacuum cleaner system have been harmonised to perfection.


With the help of its aerodynamic fan wheels, the powerful compressor motor provides impressive air flow and reduced air resistance. Combined with the floor nozzle, these are the main requirements for thorough cleaning at a low level of power consumption. The fan wheels have been enlarged for use in the new Relaxx’x ProSilence 66, resulting in the same air flow with 11% fewer revolutions, thereby significantly reducing noise output.


SensorBagless™ range

Discover the future of bagless vacuuming:
our vacuum cleaners in the SensorBagless™ range.

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