DIY & Tools · Review

Kärcher NT 22/1 Ap Review

4.5 out of 5 stars· 368 reviews

Intro

Whether you are renovating a room, running a busy workshop, or cleaning up after a weekend project, ordinary vacuum cleaners quickly reach their limits. Sawdust, plaster dust, small stones, and even spilled liquids can clog filters and damage motors that were never built for heavy-duty work. What you need is a machine designed to handle the rough stuff — one that can switch from picking up fine, choking dust to sucking up a puddle of water without missing a beat. The right wet-and-dry vacuum cleaner does not just save you time and frustration; it protects your health by trapping dangerous particles that a standard household vacuum would simply blow back into the air. For professionals and serious DIYers alike, investing in a capable wet-and-dry shop vacuum means fewer interruptions, a cleaner workspace, and the confidence that whatever the job throws at you, your vacuum can handle it.

Generalities

When shopping for a wet-and-dry vacuum cleaner, a few key factors make the difference between a tool you reach for every day and one that gathers dust in the corner. Tank capacity matters — too small and you will be emptying it constantly; too large and it becomes awkward to move around. Suction power and airflow determine how effectively it picks up everything from fine plaster dust to heavier debris. Filter type is equally important: a quality cartridge filter that handles both wet and dry messes without needing to be swapped out saves enormous time on the job. Then there is build quality — a shatterproof tank, sturdy castors, and well-designed hose connections all contribute to years of reliable service. Kärcher has been a leading name in professional cleaning equipment for decades, and their entry-level professional wet-and-dry vacuum brings many of the features found on higher-end models into a compact, accessible package.

In this review, we take a close look at what this vacuum offers in real-world use. We cover its motor power and suction performance, the design and build quality of the tank and chassis, how easy it is to manoeuvre around a busy workspace, and which accessories come in the box. We also examine the semi-automatic filter cleaning system, noise levels, and how well it handles both wet spills and fine dust. By the end, you will have a clear picture of whether this machine is the right fit for your cleaning needs.

Description

At the heart of this machine is a 1300-watt motor that delivers strong, consistent suction for both wet and dry cleaning tasks. The 22-litre tank — made from shatterproof plastic — provides enough capacity for extended work sessions without frequent emptying, yet remains light enough at just 7.1 kg to carry one-handed using the integrated top handle. The vacuum is rated to dust class L, meaning it safely captures common workplace dusts including household dust, lime, and plaster particles. Maximum suction reaches 24.9 kPa, giving it the power to pull debris through the 1.9-metre hose with ease. The PES cartridge filter is moisture-resistant, so you can switch from dry dust to wet spills without pausing to change filters.

The design focuses on practical, everyday durability. The 22-litre tank sits on a stable base with four castors that let you pull the vacuum smoothly across workshop floors and around obstacles. The suction hose connects directly into the head of the unit rather than the side of the tank, which optimises the usable capacity — you get the full 22 litres before needing to empty. Two large, glove-friendly push-switches on top control the vacuum and the optional power-tool outlet separately. The head of the unit is secured by two sturdy side clips; releasing them gives you quick access to the tank for emptying or filter maintenance. The power cable and hose can both be clipped to the head for tidy storage when the vacuum is not in use.

Day-to-day usability is where this vacuum really shines. The semi-automatic filter cleaning system — Kärcher calls it filter dedusting — keeps suction power high by pulsing air back through the cartridge filter at the press of a button, knocking trapped dust loose into the tank below. This means you spend less time stopping to clean the filter and more time getting the job done. When vacuuming fine, dry dust, the included fleece filter bag acts as a pre-filter, keeping the cartridge filter cleaner for longer. For wet pick-up, simply remove the filter bag and carry on — the PES cartridge handles moisture without damage and does not need to be dried before you switch back to dry vacuuming. The floor nozzle features brush strips that glide over hard surfaces without scratching.

Out of the box, the vacuum comes well-equipped. In addition to the main unit, you get a 1.9-metre suction hose with elbow connector, two 0.5-metre metal suction tubes, a 300 mm wet-and-dry floor crevice tool, a slot nozzle for tight gaps, a non-woven fleece filter bag, and the PES cartridge filter. The hose length combined with the two extension tubes gives you a comfortable reach of just under 3 metres, letting you clean floors and workbenches without constantly repositioning the vacuum. The slot nozzle is particularly useful for getting between machinery, into corners, and along skirting boards. While this model does not include the automatic power-tool start function found on some higher-tier Kärcher vacuums, the manual switches are simple and reliable.

The vacuum measures approximately 380 × 380 × 525 mm (length × width × height), giving it a compact footprint that tucks neatly under a workbench or into a storage cupboard. It carries a 2-year manufacturer warranty and is made in Germany. Customer feedback is strong: the vacuum holds a rating of 4.5 out of 5 stars based on 368 reviews, and ranks as the number 18 best-seller in the Wet-Dry Shop Vacuums category on Amazon. At 71 dB, the noise level is reasonable for a 1300-watt professional vacuum — noticeably quieter than many bulkier shop vacs while still being loud enough that ear protection is recommended during extended use.

Pros and cons

Pros

  • The 22-litre shatterproof plastic tank strikes an excellent balance — large enough for extended work sessions without frequent emptying, yet the whole unit remains portable at only 7.1 kg.
  • The PES cartridge filter handles both wet and dry messes without needing to be swapped or dried between tasks — switch from vacuuming sawdust to sucking up a spill in seconds.
  • Semi-automatic filter cleaning (filter dedusting) restores suction power with a simple button press, dramatically reducing downtime spent manually cleaning the filter.
  • Dust class L certification means it safely captures common workplace particles including plaster dust and lime — protecting your lungs on renovation and construction jobs.
  • The top-mounted hose connection maximises the usable tank capacity to the full 22 litres, unlike side-entry designs that waste volume and trigger earlier emptying.
  • Four smooth-rolling castors and the integrated carry handle make it easy to pull around a busy workshop or carry up stairs one-handed.
  • Generous included accessory set — 1.9 m hose, two 0.5 m metal tubes, floor crevice tool (300 mm), slot nozzle, fleece filter bag, and PES cartridge filter — means you can start cleaning right out of the box.
  • Compact footprint of roughly 380 × 380 × 525 mm lets it slide under workbenches and into tight storage spaces with ease, and the cable and hose clip onto the head for tidy storage.

Cons

  • The 1.9-metre suction hose is on the shorter side for a professional vacuum — you may find yourself repositioning the unit more often than with vacuums offering 3-metre or longer hoses.
  • This model lacks the automatic on/off switch for power tools found on pricier Kärcher NT variants — if you frequently use the vacuum with a sander or saw, you will need to turn it on and off manually.
  • At 71 dB, it is not whisper-quiet — prolonged use in enclosed spaces calls for hearing protection, though this is typical for a 1300-watt professional vacuum.
  • The vacuum is corded-only with no battery option — you are limited by the length of the power cable and proximity to a 230-volt mains socket.
  • The single power level (no variable suction control) means you cannot dial down the suction for delicate surfaces like curtains or lightweight rugs without partially blocking the airflow manually.

Use cases

This wet-and-dry vacuum is ideal for professional tradespeople, serious DIYers, and anyone managing a workshop, garage, or renovation site who needs a portable yet powerful machine that handles both dust and liquids without fuss.

Workshop and Garage Cleanup

Sawdust, metal shavings, and general debris build up fast in any workshop. The 22-litre tank handles a full day of woodworking or metalwork without needing to be emptied. The semi-automatic filter cleaning keeps suction strong even as the filter loads up with fine dust, and the compact footprint means it does not dominate your floor space when not in use.

Renovation and Building Work

Plaster dust, brick fragments, and mixed rubble are no problem for this class L vacuum. It captures the fine airborne particles that renovation projects generate, protecting your lungs and keeping the rest of the house cleaner. When a pipe leaks or rain gets in through an unfinished roof, simply switch to wet mode and vacuum up the water.

Commercial and Office Cleaning

For cleaning teams maintaining offices, shops, or public spaces, the ability to handle wet spills — coffee, tracked-in rain, or mopped-over areas — without stopping to change equipment is a genuine time-saver. The lightweight build and carry handle make it easy to transport between sites and up staircases.

Vehicle Interior Cleaning

The slot nozzle reaches deep between car seats and into footwells, while the floor tool handles wider carpeted and hard-floor areas. The wet-pick-up capability means shampoo extraction from upholstery is on the table, and the moderate noise level means you can use it in a residential driveway without causing a disturbance.

Emergency Water Spills and Flooding

When a washing machine overflows or a basement takes on water after heavy rain, this vacuum switches instantly to wet mode and begins extracting litres of water fast. The 22-litre capacity means you can remove a meaningful amount of water before needing to empty, and the moisture-resistant filter means no damage from accidental wet use.