my friend is also trying to choose a vacuum cleaner, so she chooses between Karcher and Thomas, both with an aquafilter and a steam generator. I have Karcher SV-1802, with whom I am satisfied, I have read a little on the topic recently.
sensible article here
VACUUM CLEANERS WITH AQUAFILTER
Vacuum cleaners with an aquafilter (or, as they are often called, vacuum cleaners with a water filter) are one of the best in terms of the quality of cleaning (air purification as well) and are classified as dry vacuum cleaners (there are models with the functions of washing vacuum cleaners). Used in vacuum cleaners with aquafilter, the air purification technology can reduce dust emissions to 0.01-0.001%, which is a very good indicator (cleaning quality is on par with built-in vacuum cleaners). In addition to cleaning the premises, vacuum cleaners with an aquafilter additionally humidify and purify the air, which naturally has a beneficial effect on the overall ecology of the room. The suction power in vacuum cleaners with an aquafilter remains constant throughout the entire cleaning process, unlike dry vacuum cleaners with a dust bag, in which the suction power gradually decreases as the dust bag fills.
The cleaning method is as follows: dust and debris particles are sucked into the vacuum cleaner body, where the collected debris and dust pass through the water in the vacuum cleaner body. Heavy debris (sand, litter, etc.) immediately sinks and settles to the bottom. Light dust together with air bubbles "emerges" from the water, remaining dry as before. A separator located above the water removes this dust from the air (this cleaning method is used in the Rainbow, HYLA models). The separator is a hollow cylinder, the side surface of which is formed by longitudinal plates of a special shape (there are about 60 of them). Rotating at a high frequency (up to 25 thousand rpm), it creates an air-water whirlpool above the water surface, in which the smallest water droplets capture (wet) dispersed dust particles, pollen, spores, etc. is large, and the design of the blades is specific, all this suspension from water and mud does not pass further and gradually settles in the water. Air purified in this way from water and dust (with an efficiency of 99.9991%) is sucked into the separator and blown out of the vacuum cleaner. In some models, HEPA fine filters are used instead of a separator for air aftertreatment.
The price range of vacuum cleaners with an aquafilter is from $ 300 to $ 3000.
Expensive vacuum cleaners (price range from $ 1500 to $ 3000) Rainbow, HYLA, Pro-Aqua, Kirby are sold as a rule through salesmen-demonstrators who show all the advantages of this miracle technique in action on site. Such vacuum cleaners are multifunctional. They are able to perform not only "vacuuming" duties, but also to purify, aromatize the air in the room, spray essential oils for inhalation, and collect water spilled on the floor. They can be used as compressors for removing dust from electronic equipment, blowing out jets and radiators of cars, etc.You can find out about what tricks salesmen are trying to sell a vacuum cleaner worth $ 3000 in the article "Kirby's Paradox". Household vacuum cleaners with an aquafilter in the price range of $ 300-600 in Russia are represented by such companies as THOMAS, KARCHER, DE LONGI ...
Washing vacuum cleaners with aquafilter allow, in addition to dry cleaning, to perform wet cleaning of horizontal and vertical surfaces (smooth and fleecy), including parquet, tiles, linoleum, carpets, upholstered furniture, mattresses and car interiors. Such vacuum cleaners wash windows, remove dirt, collect liquid, and remove blockages in pipes.
The most common and well-known aquafilter washing vacuum cleaner is the Thomas TWIN Aquafilter model. This vacuum cleaner uses a water filtration system (cleaning phases: water wall, turbulent aqua filter, sponge filter, HEPA filter). For dry cleaning, the Thomas TWIN Aquafilter uses an aquafilter as a dust collector with a very high purity of 99.99%. At the same time, the suction power remains constant during the entire cleaning, since dust particles drowned in the water do not impede the passage of air. The water filtration system works as follows: first, a water wall is created from four opposing nozzles, which retains up to 96% of all dust particles, then, to wet the remaining dust, water and dust are intensively mixed with vortex flows; and at the last stage, the system of filters retains the moistened dust particles that have not settled to the bottom. A distinctive feature of the water filter is its ability to clean not only those surfaces, from which the dust is collected by the nozzle, but also the air in the room in general. This happens due to the fact that the air saturated with moisture released from the vacuum cleaner saturates the entire atmosphere in the room with it (which in itself is good for health), including the floating dust particles, as a result of which they become heavy and sink to the floor.
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but there is one thing. first, they show the diagrams and the principle of operation of expensive vacuum cleaners. From what I've seen live, the circuit is consistent with the Rainbow principle. But I have already spoken, despite the ideal cleaning, paying 3 thousand dollars for a vacuum cleaner is too much.
and then the vacuum cleaner Thomas appeared in some incomprehensible way. he did not even come close with the schemes of work that are described above.
Compared similar mine Karcher and appeared Thomas SYNTHO aquafilter. The principle of work is similar.
cleaning degree too.
This vacuum cleaner uses a water filtration system (cleaning phases: water wall, turbulent aqua filter, sponge filter, HEPA filter).
but Karcher is more convenient, fewer tubes, everything is monolithic and snaps into place in one motion. But in Karcher there is no possibility to wash something with detergents, but I do not use these functions of de-scaling foam and do not see the need.
I don’t know about Thomas, that filter, which is declared as HEPA, in Karcher is not removed during dry, not wet cleaning, it stands in one place and constantly, as they say, filters, the sponge filter is washed after each cleaning. For a year of work, she did not change the smell, which the owners of Thomas complain about on various sites.