Back to basics
Back in school, we learned about a delicate balance of nature: humans breathe in Oxygen and breathe out Carbon Dioxide (CO2). Plants take in that CO2 to thrive and give us fresh Oxygen back. Outdoors, this cycle works perfectly. Indoors, the balance can get disrupted within minutes.
CO2 is measured in parts per million (ppm). For your brain to thrive, it needs CO2 levels to remain below 1000 ppm. However, based on data we gathered in January 2026, we saw an average of 1500 to 2000 ppm CO2 indoors during cold weather, when ventilation was reduced to avoid heat loss.
Signs and risks
In home environments, more than 1000 ppm CO2 leads to that "stuffy, hot room" feeling, which is usually just a buildup of exhaled CO2 causing drowsiness, loss of focus and headaches.
In business environments, the increased use of pressurized CO2 storage tanks increases the likelihood of exposure to dangerously high levels of CO2. At 15.000 ppm CO2, people can start to experience accelerated respiratory rate. At 40.000 ppm, CO2 levels pose an immediate danger to life [1].
Measure and ventilate
You can't manage what you don't measure. Our goal is to give you the data you need to ventilate your space at the perfect time. Tip in the meantime: Form a habit of ventilating heavily used rooms throughout the day!