Joybuy Insights

Choosing a window cleaner: how to buy a practical model for streak-free windows

A window cleaner can save you a great deal of time, but not every product suits every home or car. A compact window squeegee is handy for mirrors and small windows, while a window-cleaning robot is particularly useful for large or hard-to-reach glass surfaces. A good glass cleaner and microfibre cloth also have a major impact on the final result.

When buying, do not focus only on terms such as “streak-free” or “powerful suction”. Above all, check the product specifications, intended surfaces and safety instructions. This will help you avoid buying a window cleaner that turns out to be impractical, fragile or unsuitable in everyday use.

Common pitfalls when choosing a window cleaner

1. A battery that does not provide true cordless operation

Some automatic window cleaners mention a built-in battery. However, this battery is sometimes intended only as an emergency power supply in the event of a power cut. The window cleaner must then remain connected to the mains during use.

Therefore, check:

  • Whether the appliance can operate completely wirelessly.
  • How long the battery lasts.
  • Whether the battery only supports the fall-protection system.
  • How long the mains cable and safety line are.

This is particularly important with a window-cleaning robot if you want to clean outside windows or windows at height.

2. Suction power without enough attention to safety

A high pascal rating, such as 2,800 Pa or 5,500 Pa, tells you something about the stated suction power, but it is no substitute for safe use. A smooth, clean and undamaged pane is essential for a secure grip.

When using a robot window cleaner, always use the supplied safety line. Attach it to a sturdy anchor point indoors. Do not use a robot on cracked, loose, rough or porous surfaces. Stay nearby during use and follow the instructions.

3. A cloth or squeegee that moves dirt around

A window squeegee can leave streaks if the rubber blade is damaged, dry or dirty. A microfibre cloth for glass is also less effective if it has previously been washed with fabric softener or contains a lot of dust.

For streak-free window cleaning, follow this order:

  1. Remove sand and loose dirt with water.
  2. Apply a small amount of glass cleaner.
  3. Work with a clean cloth or window squeegee from top to bottom.
  4. Dry the edges with a lint-free cloth.
  5. Clean the squeegee blade after use.

Important specifications to compare

Manual window squeegee: width, reach and material

A window squeegee of around 20 cm is suitable for smaller windows, mirrors and shower screens. For larger panes, a 30 cm squeegee may be more efficient. An adjustable or telescopic handle is practical for high windows, but check that the locking mechanism feels sturdy enough.

A soft silicone or rubber blade is suitable for smooth glass, provided you remove coarse dirt first. Dry scraping can cause scratches if sand becomes trapped between the squeegee and the glass.

Microfibre cloth: fibre structure and care

Pay attention to the size, structure and care instructions. The Dunlop Microfiber Cloth for Glass measures 35 x 35 cm and, according to the product information, is made from 100% viscose. The cloth is intended for glass and car windows and can be rinsed with warm or cold water and reused.

We recommend washing microfibre cloths without fabric softener. Also check whether the cloth leaves lint on dark car windows or mirrors.

Glass cleaner: volume, application and warnings

A 750 ml glass-cleaning spray is practical for several cleaning sessions. Always check which surfaces the product can be used on. A product for windows and mirrors is not automatically suitable for untreated wood, natural stone or every type of plastic.

According to the product information, AJAX Glass Cleaner Spray Triple Action contains a formula designed to deliver a streak-free finish. The manufacturer states that the formula is 98% biodegradable and that the packaging is recyclable. These are brand and product claims; always follow the label and safety information before use. The product may cause skin and eye irritation and must be kept out of reach of children.

Which window cleaner suits your needs?

Suitable for: Budget-conscious beginners
Cleany Window Wiper 20cm

Cleany Window Wiper 20cm - Assorted Colours

Why it suits this profile: A simple window squeegee for small and medium-sized smooth surfaces, with no electrical components or complicated settings.

How this product avoids the pitfall

The specification states a working width of 20 cm, so you know in advance what the squeegee is designed for.

Key benefit & advantages

Compact size and suitable for windows and other smooth surfaces.

Suitable for: Buyers looking for premium quality
ECOVACS WINBOT W2 PRO Omni Window Cleaning Robot

ECOVACS WINBOT W2 PRO Omni Window Cleaning Robot

Why it suits this profile: An appealing option for households with lots of large windows, balcony doors, mirrors or other smooth glass surfaces.

How this product avoids the pitfall

The product information lists a safety line, edge detection and protection in the event of a power cut. Use these features only as described in the instructions.

Key benefit & advantages

6-in-1 station, three spray nozzles and control via the app or station, according to the product specifications.

Suitable for: Specific uses & intensive users
Alpina Window Cleaning Set 5 pcs

Alpina Window Cleaning Set - 5 pcs

Why it suits this profile: A practical choice if you want to tackle windows, frames and hard-to-reach areas with one cleaning set.

How this product avoids the pitfall

The contents are clearly specified: a telescopic handle, window squeegee, window cleaner and two microfibre cloths.

Key benefit & advantages

Handle adjustable from 57 to 130 cm, with interchangeable cleaner and squeegee.

Suitable for: Car and glass enthusiasts
Dunlop Microfiber Cloth for Glass Blue

Dunlop Microfiber Cloth for Glass - Blue, 35 x 35 cm

Why it suits this profile: Handy for car windows, mirrors and glass when you want to be able to quickly buff the surface without getting out a complete set.

How this product avoids the pitfall

The cloth is intended for glass and car windows and, according to the product information, can be rinsed with water and reused.

Key benefit & advantages

35 x 35 cm size and a texture that, according to the description, was developed for glass surfaces.

Looking for more options?

We have put together a complete, up-to-date list of products that fully meet these strict selection criteria and the applicable European safety regulations.

Frequently asked questions about window cleaners

Is a window-cleaning robot suitable for outside windows?

That depends on the model and the type of window. Check whether outdoor use is specified and whether it has a safety line, a sufficiently long cable and protection in the event of a power cut. Do not use the robot in the rain or on damaged glass if the instructions prohibit this. An outside window cleaner can be useful, but secure attachment remains essential.

How do you get windows clean without streaks?

First remove sand and loose dirt. Then use a small amount of glass cleaner and work with a clean window squeegee or microfibre cloth. Too much product can actually leave a film. Clean the squeegee blade after each stroke and dry the edges with a separate cloth.

How much does it cost to use an automatic window cleaner?

In addition to the purchase price, running costs may include cleaning solution, microfibre cloths and replacement pads. A mains-powered model uses electricity while cleaning. Also check whether accessories such as safety lines and cloths are available separately. For a few windows a month, a manual window squeegee is often sufficient; with a large amount of glass, automation can make cleaning more convenient.