| Luftfilter | air filter |
| Zuluftfilter | fresh air filter supply air filter supply filter |
| Hüfthalter | girdle |
| Luftholen | gasp |
| Lufthunger | shortness of breath |
| Luftlager | air bearing |
| Luftmine | blockbuster |
| Abluftgitter | exhaust air grille return air grille |
| Luftbild | air photograph |
| Luftlinie | as the crow flies beeline |
| Luftnummer | flop washout |
| Lüfter | fan blower |
| Zuluftgitter | inlet grille supply air grille |
| Huftier | ungulate |
| Tüftler | handyman tinkerer |
| aufteilen | portion |
| Ultrafilter | ultrafilter |
| Biofilter | biofilter |
| Filter | filter |
| Netzfilter | line filter |