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Buying guide: how to choose your carpet cleaner

A carpet cleaner is selected according to three measurable criteria: motor power for deep cleaning, fresh water tank capacity to cover large areas in one go, and cord length to move freely without constraint. Comparing these values helps identify the appliance that matches your actual needs.

What to check

Motor power Motor power, expressed in watts, determines suction force and cleaning efficiency. On recent market listings, the median sits at four hundred watts, while the least powerful units start at three hundred and twenty-seven watts and the most capable reach two thousand watts. High power extracts more dirt and water from fibres, which speeds up drying and improves results. The score displayed on the site compares each model’s power to these benchmarks: the longer the bar, the more powerful the motor for deep cleaning carpets and upholstery. Market median: 400 W
Fresh water tank capacity Fresh water tank capacity, measured in litres, defines the area you can clean before needing to refill. Data collected shows a median of one point four litres, the smallest tanks holding half a litre and the largest four litres. A generous tank reduces interruptions and suits large surfaces, while a small volume suffices for spot cleaning. The site’s score places each appliance against these values: the longer the bar, the larger the tank for working without frequent refills. Market median: 1.4 L
Cord length Power cord length, expressed in metres, directly affects your freedom of movement. Recent listings show a median of four point six metres, the shortest cords measuring three point seven metres and the longest reaching eight metres. A long cord avoids changing sockets mid-clean, which makes treating large rooms or several adjacent spaces easier. The displayed score compares each model to these benchmarks: the longer the bar, the longer the cord to move freely around your home. Market median: 4.6 m
Maintenance after use After each use, empty the dirty water tank and rinse it with clean water to prevent deposits and bad odours. Also clean the rotating brush and filter if the appliance has one. Regular maintenance preserves suction power and extends the carpet cleaner’s lifespan. Let components dry before reassembling to prevent mould growth.

Benchmarks based on 30 recent market listings, collected on 4 October 2026.

What you get for each budget

Under €150

Appliances in this bracket generally offer modest power, a small tank and a short cord, suited to small areas or occasional use.

€150 to €300

This price level provides access to models with intermediate power, median tank capacity and standard cord length, suitable for regular use on medium-sized surfaces.

Over €300

The most expensive carpet cleaners combine high power, a large fresh water tank and a long cord, designed to clean large areas frequently and thoroughly.

Frequent mistakes

Choosing a tank too small for the area to clean multiplies trips back and forth and lengthens cleaning time.
Overlooking cord length leads to frequent socket changes or using an extension, which complicates use.
Confusing motor power with water flow: only power in watts guarantees effective suction after shampooing.
Forgetting to empty and clean the dirty water tank after each use encourages odours and reduces performance.
Underestimating the importance of power for thick carpets, which require vigorous extraction of water and dirt.