2. Hire, charter, rent refer to paying money for the use of something. Hire is a general word, most commonly applied to paying money for labor or services, but is also used in reference to paying for the temporary use of automobiles (usually with a chauffeur), halls, etc.; in New England, it is used in speaking of borrowing money on which interest is to be paid (to distinguish from borrowing from a friend, who would not accept any interest): to hire a gardener, a delivery truck, a hall for a convention. Charter formerly meant to pay for the use of a vessel, but is now applied with increasing frequency to leasing any conveyance for the use of a group: to charter a boat, a bus, a plane. Rent is used in the latter sense, also, but is usually applied to paying a set sum once or at regular intervals for the use of a dwelling, room, personal effects, an automobile (which one drives oneself), etc.: to rent a business building.

Did you mean airing?