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

Noun
Desu Copula

The polite, past negative form of 温風暖房

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

Past/Perfective
Negative
Polite
Formal Register