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• EBV - Building Ventilation
• Working - Office ventilation
• Learning - School ventilation
  • What makes a good indoor climate?
  • School ventilation
  • Principle means of control

What makes a good indoor climate?

A good indoor climate is a combination of temperature, draft, humidity, air quality, sound and light. Air quality can be an especially difficult condition to calculate, however frequently monitored CO₂ levels can be a good indicator of how heavily the air is being used.

Recommended exposure limits for CO₂ levels are placed at 1000 ppm and should be observed to obtain an optimal indoor climate for teaching.

High concentrations of CO₂ can cause discomfort such as headaches, fatigue and lack of concentration. CO₂ is carbon dioxide which is emitted by the air we exhale, so the more students in a classroom the more CO₂ is formed.

You could say that the higher the CO₂ concentration in the air, the less oxygen there is available, and oxygen is the fuel for the brain.

Calculate CO₂ levels and airflows in the classroom

Calculate CO₂ levels in the classroom with the Learning Calculator.

Which data should be used:

• Number of students in the classroom

• Duration of the lessons

• Indoor climate category/wanted CO₂ level (ppm)

For a general product selection program for calculating energy consumption etc. for all EXHAUSTO products please use EXselect from our Calculation programs page.

EXHAUSTO Learn-O-Meter

The EXHAUSTO Learn-O-Meter is a form of barometer that allows students and teachers to monitor the level of CO₂ in a classroom.

In some schools more students are present than intended when the ventilation was planned. The rooms in the schools are also unevenly loaded. In some situations more lessons are carried through without any breaks and in other cases the students in the class are divided into smaller groups. Therefore a varying CO₂ level is seen in the classroom, as shown by the figure. In a simple and clear way the "Learn-O-Meter" shows the connection between:

• Indoor climate categories according to EN15251:2006*

• CO₂ level in the indoor climate

• Visual indication showing the learning capacity of children

* Check local legislation or guidelines

EXHAUSTO documentation and guidance is designed to be used in every phase of a project - from planning and tendering through to installation, operation and servicing. As well as this project planning guide, more technical information is available in our individual product brochures or by contacting EXHAUSTO directly.