Classrooms fill up fast. Ventilation without opening the windows in winter.
With many children in one room, CO₂ rises fast and the air gets heavy.
Opening the windows in winter chills the children sitting next to them.
Copper's natural antiseptic properties stop bacteria and microbes spreading from the unit.

Recommendation
The PRANA 200 C Premium Plus changes up to 140 m³/h, and its CO₂ sensor steps the ventilation up by itself as the class fills. A classroom usually needs two units or more.
up to92%
efficiency
Indicative advice. The exact number of units follows a site visit.
The ventilation adjusts itself to humidity, CO₂ and air quality (VOC), depending on the configuration. Mini-heating and Winter mode switch on and off by themselves.
InPremiumPremium Plus
Defrosts and warms the system after a stop and before the cold season, so frozen moisture can't damage the fans. Use it together with Mini-heating when it's below +4 °C outside.
InStandardPremiumPremium Plus
Protects the heat exchanger from freezing in the cold season and raises the incoming air by 3–4 °C in night mode.
InStandardPremiumPremium Plus
We'll propose the model and number of units, free of charge.