Quality
We deliver consistent quality with visible results. Our permanent specialists work according to clear agreements and ensure clean windows, time after time.
With the window cleaning of 1nergiek, we ensure clear windows and a well-kept appearance for your premises. In this way, we contribute to a pleasant working environment and a professional first impression for visitors.

1nergiek provides professional window cleaning for commercial buildings and locations. Our specialists choose the safe working method, technique, and planning that fit the building and its surroundings. In this way, we ensure clean windows, a well-kept appearance, and a professional first impression, with as little disruption as possible for employees, visitors, and other users of the building.
At 1nergiek, we believe that good window cleaning starts with real collaboration. Our own specialists do not work separately from your organization, but are part of it. They know the building, the people, and the daily use of the spaces. This creates a smooth collaboration between your colleagues and guests and our window cleaners.
We deliberately choose long-term partnerships, with clients and employees alike. That commitment ensures continuity and reliability, even during busy or changing periods. Together, we create clean and welcoming environments where everyone feels welcome.
Did you know that for window cleaning we use our own self-generated osmosis water? This ensures a perfect result without extra cleaning agents and with less impact on the environment. With that, we clean nearly 2,000 windows per day.
We deliver consistent quality with visible results. Our permanent specialists work according to clear agreements and ensure clean windows, time after time.
Our window cleaners make the difference. We invest in attention, guidance, and appreciation. Good employment practices are not just a promise to us, but daily practice.
We tailor the window cleaning to your organization. Even in special situations or with additional wishes, we work together to find a suitable solution.
We make conscious choices in materials and working methods. As an organization, we take responsibility for our impact on people, society, and the environment.
Window cleaning is skilled work and requires a careful and safe approach. At 1nergiek, we therefore work exclusively with well-trained specialists who hold a VCA* certification and the necessary professional qualifications. Our window cleaners work according to clear safety guidelines and know exactly which method can be used best and safest in each situation. Depending on the building and the circumstances, we use suspended platforms, aerial work platforms, ladders, or telescopic window cleaning. By always using the right equipment and the right technique, we can clean windows efficiently and safely at any height, with minimal disruption to the surroundings.
Safety is also central at the organizational level. 1nergiek is VCA**-certified, which means that our processes, working methods, and safety policy are structurally designed for safe and responsible work.

Find out whether we are a good match. We would be happy to talk with you, listen to the situation, and be honest about what our cleaning company can do for you in the field of window cleaning.
Do you have questions about window cleaning? Below we answer the most frequently asked questions. Is your question not listed? Feel free to contact us, we’ll be happy to help you further!
Window cleaning is the professional cleaning of windows and glass surfaces on the inside and outside of a building. Clean windows create a well-kept appearance and a pleasant working environment. Depending on the location and accessibility, we use different techniques to clean the glass safely and streak-free.
Clean windows contribute to the appearance of your organization. Employees, visitors, and guests immediately get a well-kept first impression. In addition, regular window cleaning prevents dirt, buildup, and other contamination from accumulating and damaging the glass. With periodic window cleaning, the glass stays clean, presentable, and in good condition.
The costs of window cleaning depend on the situation on site. We look at, among other things, the number of windows, the accessibility of the glass, the height of the building, and the desired frequency. That is why we always work with a tailor-made proposal. We assess what is needed, give honest advice, and make it clear in advance what you can expect. That way, there are no surprises.
How often window cleaning is needed depends on the location of the building and its surroundings. A property along a busy road or in an urban environment often gets dirty faster than a building in a quiet location. Together, we determine a suitable frequency that matches your wishes and the appearance you want to maintain. That way, the windows stay clean and presentable all year round.
Yes, we can also safely clean hard-to-reach windows. Depending on the situation, we use telescopic cleaning, an aerial work platform, or other suitable tools. For every location, we choose the method that fits best. This allows us to safely and thoroughly clean glass at greater heights or in hard-to-reach places as well.
Safe working is the top priority in every window cleaning job. That is why we work with well-trained specialists who hold a VCA* certification and the necessary professional qualifications. Beforehand, we assess which method best and safest suits the location. Depending on the building and the circumstances, we use suspended platforms, aerial work platforms, ladders, or telescopic window cleaning. 1nergiek itself is also VCA** certified. This means that our processes, working methods, and safety policy are designed for safe and responsible work.
Yes, it can. We tailor the window cleaning to the daily operations within your organization. Wherever possible, we carry out the work at times when employees, visitors, and guests experience as little inconvenience as possible. Our specialists work efficiently and ensure that the work is carried out with minimal disruption.
Window cleaning requires specialist knowledge. Not only to clean windows without streaks, but also to work safely at height and apply the right techniques. Every location requires a different approach. Our specialists have the right materials, resources, and experience to clean glass safely and thoroughly. This ensures a representative result and that the work is carried out responsibly.