Belgium
boiler
Meaning
a hot water tank
Elsewhere
chauffe-eau
Explanation
The French heat their water in a chauffe-eau. Belgians and the Swiss have a boiler.
Example
Le boiler est en panne, on n’a plus d’eau chaude depuis ce matin.
The hot water tank's broken, we've had no hot water since this morning.
Origin
Borrowed straight from the English boiler.
Where
Belgium
Switzerland
Source