fan
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fan
A device with rotating blades that creates an airflow in order to cool, ventilate, or dry something. It is used in computers, cars, or as a fan in rooms.
Der Lüfter meines Laptops ist in letzter Zeit sehr laut geworden.
The fan in my laptop has become very loud lately.
'Der Lüfter' (fan) belongs to the word family of 'die Luft' (air). It is derived from the verb 'lüften' (to air out, to ventilate). The ending '-er' here refers to the device that performs the action.
Bitte lüfte das Zimmer, es ist sehr stickig hier.
Please air out the room; it's very stuffy in here.
Common verbs used with 'Lüfter' (fan) are 'laufen' (to run), 'kühlen' (to cool), 'einbauen' (to install), and 'reinigen' (to clean). Typical adjectives that describe a fan are 'laut' (loud) and 'leise' (quiet).
Der Lüfter läuft auf höchster Stufe, um den Motor zu kühlen.
The fan is running at the highest setting to cool the engine.
'Lüfter' (fan) is often part of compound nouns that describe its function more precisely. Examples are 'CPU-Lüfter' (CPU fan, for the processor), 'Gehäuselüfter' (case fan, for the computer case), or 'Badlüfter' (bathroom fan).
Mein neuer CPU-Lüfter ist viel leiser als der alte.
My new CPU fan is much quieter than the old one.
fan
'Ventilator' and 'Lüfter' both refer to devices with rotating blades that move air. 'Ventilator' is usually used for a visible device in a room that cools people on hot days or circulates fresh air. 'Lüfter' is more general and more technical. The word often fits parts in a computer, car, or machine that cool something. The words can be confused because a 'Ventilator' is also a kind of 'Lüfter'. In everyday language for a room, 'Ventilator' sounds more natural; for technology and built-in parts, 'Lüfter' is more precise.
Der Lüfter im Laptop wird sehr laut, wenn ich viele Programme öffne.
The fan in the laptop gets very loud when I open many programs.
Wegen der Hitze stellte Anna einen Ventilator neben den Schreibtisch.
Because of the heat, Anna put a fan next to the desk.