温風 おんぷう暖房 だんぼう ではありませんでした
ompūdambōkidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 温風暖房機

1. Was not a warm-air heater.; Was not a hot-air heater.

Past/Perfective
Negative
Polite
Formal Register