warm air
Commonly used for heated air from appliances like heaters, hair dryers, or air conditioners.
Warm air is coming out of the heater.
spring breeze
Archaic literary sense for a warm spring wind; not used in modern everyday language.
In old waka poetry, 温風 can refer to a warm spring breeze.
warm-air heating
warm air heater
Compound of 温 (warm) and 風 (wind, air). The archaic sense 'spring breeze' is a classical Chinese-derived usage.