3.U, 3.0, 3.1 Heating, energy
Heating technology, pumps, renewable energies, sustainable energy supply, efficient use of energy, chimneys, fireplaces
3.2 Building site/equipment depot
Building services installations, fastening technology, tools
3.2 Building automation
Measurement and control technology, building automation
3.3 Ventilation, air conditioning, refrigeration
Ceiling-cooling systems, hygiene, ducts/pipes/hoods, air conditioning/refrigeration, air handling units, air filters, ventilation fittings, heat recovery, ventilation units for residential properties, ventilators
