# domains_identified: [no_match] Ventilation systems (ventilyacionnye sistemy) are generally categorized into three main types depending on how air is moved:
A mechanical system where fans actively pump fresh air in and pull old air out. These often use recuperators to save energy by heating incoming cold air with the warmth of the outgoing air. shemy ventiljacionnye sistemy
Specific units like kitchen hoods or bathroom fans that remove air from "wet" or high-odor areas. Typical Ventilation Diagrams shemy ventiljacionnye sistemy
Relies on pressure differences and wind. Fresh air enters through gaps or window valves , while stale air leaves through exhaust shafts. shemy ventiljacionnye sistemy