Make the indoor climate visible so that children and adults thrive
With technology, behavioral design and documented effect in 75+ municipalities.
Læs hvordan vi hjælper vores kunder
Imagine if the air inside was as fresh as in the forest
With the campaign "OPEN nature inside" we focus on the invisible indoor climate and the huge importance it has for children's well-being, adults' energy and our common health.
It is time for the indoor climate to become an integrated part of our everyday lives.
See the campaign here
Hear what our customers say
Elementary schools
Hear how the elementary school's management, teachers and students welcome the SKY and what effect it has on teaching.
Office
Hear how Jakob Skov (Team leader for kKontaktcenteret and main number in Copenhagen Municipality) has benefited from a better indoor climate with the help of SKYEN
Politicians
Hear how Araz Khan can benefit from a better indoor climate with the help of SKYEN
Energy teams
Hear how Kenneth Bastholm Mortensen can benefit from a better indoor climate with the help of SKYEN
Cross-municipal solutions
Hear how Tanja (School Head, Raklev School) and Rune (Team Leader, Property Kalundborg Municipality) have benefited from a better indoor climate with the help of SKYEN
On a mission to create the best indoor climate
Open is created for workplaces and institutions that take health and well-being seriously, and we are deeply passionate about creating the best conditions for the next generation of Superhumans. With our visionary approach, we strive to take everyone along the whole way to increased health and well-being.
Our goal is clear: To ensure a healthy and pleasant indoor climate where people thrive - every day.
Indeklima kasser som gør det nemt fra starten
Det skal være enkelt at forbedre sit indeklima. Derfor har vi lavet nogen enkle kasser som læreren eller pædagogen kan åbne og igangsætte uden behov for teknisk hjælp.
Customer Testimonials






Expert knowledge within indoor climate
Hvad er indeklimamåling? Kompleks guide til skoler og arbejdspladser
What is Sick Building Syndrome?
Imagine you walk into a building. It could be your school, your office or your home and before long you start to feel tired, have a headache or dry eyes. When you leave the building, the symptoms disappear. Does this sound familiar? Then you may have experienced Sick Building Syndrome (SBS).
The challenge of indoor climate in schools and how to solve it
Why is the indoor climate bad? The primary schools in Denmark have been built from...
ÅBN launches SKYEN 2.0 – the indoor climate sensor of the future
Copenhagen, August 18, 2025 The Danish company ÅBN is now launching SKYEN 2.0 , a...
Can poor indoor air quality be measured?
Imagine walking into a classroom or office. The air feels heavy, your head feels a little heavy, and your concentration drops. These are classic signs of poor indoor air quality – but how do you really know if it’s a real problem and not just a bad day?
The answer is simple: Yes, you can measure it .
PARK opens September 1st – get help with the application and optimize the working environment with ÅBN
On September 1st, a new round of the working environment fund opens, giving municipalities and...
AT Order Indoor Climate: How ÅBN solves your challenges with temperature and CO2
Has your company or institution received a AT indoor climate regulations from the Danish Working Environment Authority?...
Indoor air quality meter: Your complete guide to a healthy indoor climate in 2025
A healthy indoor climate is essential for your well-being and productivity, and for the well-being and productivity of your employees. With an indoor air quality meter, you can monitor and optimize the air quality in your home, avoiding health problems and creating the perfect environment to work and live in.
EU regulations for monitoring indoor climate data: Consequences for Danish municipalities
The upcoming implementation of revised EU directives will require extensive changes in how Danish municipalities handle indoor climate monitoring and data logging in their buildings. New legal requirements are coming into force with significant consequences for both new and existing municipal facilities, where automated measurement and control systems will become mandatory within the next few years.
Working environment fund: How municipalities and regions can get support for better indoor climate and well-being
The Danish Working Environment Authority has opened its doors to municipalities and regions that want to strengthen the working environment – and improved indoor climate is an obvious initiative. With the Fund for Working Environment Initiatives in Municipalities and Regions, you can apply for support for specific initiatives that benefit employees and citizens.
What is an acceptable TVOC level?
How does SKYEN assess TVOC in the indoor climate?
The quality of the indoor climate is of great importance for both health and well-being.
One of the most important parameters for air quality is TVOC (Total Volatile Organic Compounds), which covers a wide range of volatile organic compounds from materials, furniture, cleaning products and human activity.
SKYEN from ÅBN helps users monitor and understand their TVOC levels in real time, enabling better control and optimization of the indoor climate.
Indoor climate too dry? How to solve the problem and create better air quality
A too dry indoor climate can lead to irritation of the eyes, nose and throat, increased risk of respiratory diseases and general discomfort. If you experience dry air in your home or workplace, it is important to find the cause and take the right steps to improve the indoor climate.
But why does an indoor climate become too dry, and how can you solve it? Read on!
SKYEN measures CO2 in ppm - what does that mean?
SKYEN monitors your indoor climate and ensures that you get accurate measurements of the CO2 level in the room. One of the most important parameters that SKYEN registers is the CO2 concentration, which is stated in ppm (parts per million). But what does it actually mean and why is it a good unit of measurement?
How does SKYEN assess CO2 in the indoor climate?
What is CO₂ and why is it important? CO₂ (carbon dioxide) is one of the...
Indoor climate in schools and offices: Trends 2022–2025 in Europe
The indoor climate in schools and offices has come into focus in recent years, especially after the COVID-19 pandemic. A good indoor climate is crucial for both health, learning and productivity. In the period 2022–2025, Europe has experienced a number of new trends in measuring and improving indoor climate. Below, the most important trends and developments in three main areas are reviewed: the use of IoT devices to measure indoor climate, improving indoor climate through behavioral changes, and technological solutions for a healthier indoor climate. Examples of initiatives and projects with a special focus on the school sector are given, and future development opportunities are outlined.
How to spot and improve invisible indoor climate problems in production environments
Indoor climate problems in production environments are often hidden – and that is precisely why they are overlooked. But even small fluctuations in air quality, temperature, humidity or noise can have a major impact on both employee well-being and production stability.
How ÅBN's sensor helps you achieve (and comply with) a DGNB gold requirement
Do you want to achieve DGNB Gold certification? The SKYEN indoor climate sensor from ÅBN measures the six most important parameters for a healthy indoor climate and helps you document and optimize the well-being of the building – both in relation to mandatory requirements and voluntary criteria in DGNB. At the same time, SKYEN equips you to live up to DGNB Heart – an even higher standard for health and comfort.
The four cornerstones of a good indoor climate
A good indoor climate is not just one thing – it is a balanced cocktail of temperature, sound, air and light. When we design or renovate buildings, it is crucial that we have an eye for all four areas, which together create the framework for health, well-being and learning. But what do the four indoor climate areas actually cover – and how are they interconnected?
Indoor climate consultant – Get professional advice for a healthy indoor climate
The indoor climate in your home or workplace has a direct impact on your health,...
Indoor climate and energy – How to find the perfect balance
A good indoor climate is not just about fresh air – it is also closely linked to energy consumption. Many people mistakenly believe that achieving a healthy indoor climate requires high energy costs, but the truth is that the two can go hand in hand. In this blog post, we delve into how you can optimize both indoor climate and energy, so you create a healthy environment without breaking the energy budget.
Plants for indoor climate – the best plants for a healthy and fresh office and home
A good indoor climate is not just about ventilation and temperature – plants also play...



















