-ung die
Heizung
Always 99% of the 1,295 common nouns ending in -ung take die.
Every noun ending in -ung is feminine.
Exceptions der Sprung, der Schwung
die Heizung
It's die Heizung. Heizung is feminine, plural die Heizungen.
Die Heizung funktioniert nicht.
The heating isn't working.
Heizung
Always 99% of the 1,295 common nouns ending in -ung take die.
Every noun ending in -ung is feminine.
Exceptions der Sprung, der Schwung