Such different models
Suction power
The suction power up to 300 W is quite enough for cleaning linoleum, parquet, carpet with a low pile. If you have to clean up after shedding animals, vacuum very dirty rooms, for example, after repairs, the power should be higher – from 300 to 450 watts.
Dust collection method
Aquafilter. There is a container inside the vacuum cleaner into which water is drawn. Air with dust and dirt enters the water, where all the “evil spirits” settle. And back into the apartment, clean, moist air rushes out. This cleaning method is suitable for allergy sufferers, asthmatics and those for whom any contact with dust is undesirable.
Dust collection compartment. Once inside, dust and dirt settle in the container, which must be emptied regularly: as it fills, the suction power decreases. Such vacuum cleaners are cheaper, but there is more fuss with them and contact with dust cannot be avoided.
Dust bag. It is better to use paper ones, since textiles collect only large particles of debris, and small ones either return to the air or remain in the filters, contaminating them. It is better to choose a model with a bag fullness indicator – in order to change them on time.
filters
Choose a vacuum cleaner that has a triple cleaning system: a dust collection filter; motor protection filter; a fine filter that retains allergens and microorganisms (for allergy sufferers, the best choice is HEPA filters of at least H12 class).
Nozzles
Standard set. Floor and carpet brush, for upholstered furniture, crevice. Additionally, you can purchase an electrostatic broom brush that removes dust from household appliances, plants, etc.
Turbo and electric brush. Effectively removes animal hair from carpets and sofas. The brushes in these attachments rotate due to the air flow or an additional electric motor. The attachment may have a built-in dust sensor. While dust enters the vacuum cleaner, the red indicator is on. If it goes out, then the surface is clean.
Cord
Automatic winding. It starts when you press a key or when you turn off the device from the outlet.
Auto reverse function. The cord will reel itself or unwind as you move.