Polti RollySteam WD30C cordless steam floor cleaner, 450 W, up to 35 min

The WD30C runs on a battery, so there is no hunting for sockets and no untangling a cable from around the furniture while you wash. The manufacturer states up to 35 minutes of run time, which is usually enough to wash the hard floors of a flat or to do several quick rounds of the kitchen, hallway and bathroom. After use it goes onto the charging base, and a standard charger is included as well.

Rollers rotate in the cleaning head while steam is delivered at 5 grams per minute. The steam helps loosen the dirt and the rollers lift it off the floor. This is not a pad-type steam mop, so there is no dirty cloth to wash by hand. Two rollers are supplied, which means a spare is ready from the start and one can dry while the other is in use.

Warm-up takes 18 seconds, so you can grab the cleaner the moment something is spilled. The water tank holds 0.6 litres. During a pause the WD30C parks upright on its own and does not fall over when you go to answer the door. Maximum noise level is 71 dB. The unit measures 24 × 27 × 116 cm and weighs 4.20 kg.

After washing, an automatic self-cleaning cycle runs so that no dirt is left inside to start smelling. Air passes through a HEPA filter, which holds back fine dust so it does not return to the room. The cleaning brush in the box removes hair and debris from the head and rollers that the self-cleaning cycle does not shift.

Flats and houses where floors are washed often and in short bursts, without dragging a cable around; parents and pet owners who need to get the kitchen or hallway floor clean quickly; and anyone who prefers the freedom of a battery and finds 35 minutes of washing per charge enough.