Translation guide
A passage for air, such as in ventilation, HVAC, or industrial systems.
A duct for distributing air in a building or vehicle.
The most common and general term for an air duct, used in HVAC, ventilation, and industrial contexts.
エアコンのダクトを掃除してください。
Please clean the air conditioner duct.
Literally 'ventilation pipe', used in technical or architectural contexts.
この建物の通風管は定期的に点検が必要です。
The ventilation ducts in this building need regular inspection.
Explicitly 'air duct', used when distinction from other ducts is needed.
空気ダクトの設計を変更しました。
We changed the design of the air duct.
A flexible tube for air, such as in automotive or appliance contexts.
Common for flexible air hoses, e.g., in cars or pneumatic systems.
エアホースが外れている。
The air hose is disconnected.
Generic 'air pipe', less common in everyday speech.
Check the connection of the air pipe.