Please air the room.
This tire needs some air.
This room is air-conditioned.
Don't you have an air conditioner?
When I travel, I prefer to travel by air.
I avoid traveling by air, if I can help it.
Everybody in the park looked up at the hot air balloon.
Which air conditioner do you think is the most efficient?
Open the window and let some fresh air into the room, please.
I'm accustomed to sleeping in a room without air conditioning.
The radio station came back on the air shortly after the storm.
It's so hot outside that I want to spend all day in my air conditioned house.