As part of the project, the forced ventilation system will be installed with waste heat recovery. This is a complementary project to the project "Reduction of energy performance of the building Spořilovská kindergarten, object Trenčínská 2770, Prague 4 – k.ú. Záběhlice", which was approved for financing under the 19th call of the OPE with the condition of implementation of forced ventilation (regeneration). A separate ventilation system is designed for each class, a total of four air handling units with a total power of 5000 m³/h will be installed.