- air exhaust
- air express
- air face
- air fan
- air feeder
- air film
- air filter
- air filtration
- air float
- air flooding
- air flow
- air flue
- air force
- air freezing
- air freight
- air friction
- air funnel
- air furnace
- air gage
- air gap
- air gas
- air gate
- air grating
- air grid
- air grille
- air guide
- air gun
- air handing
- air handler
- air handling
- air hardening
- air heater
- air heating
- air hoist
- air horn
- air hose
- air hostess
- air humidification
- air humidificator
- air humidifier
- air humidifying
- air impermeability
- air inductor
- air infiltration
- air inflow
- air ingress
- air injection
- air injector
- air inlet
- air intake
- air intakes
- air intel
- air ionization
- air ionizing
- air jack
- air jacket
- air jet
- air jig
- air knife
- air lance
- air lane
- air law
- air layer
- air leak
- air leakage
- air letter
- air level
- air lift
- air line
- air liquefaction
- air lock
- air mail
- air main
- air manifold
- air map
- air mass
- air mattress
- air meter
- air mile
- air mission
- air mixer
- air mixture
- air moistening
- air moisture
- air monitoring
- air motion
- air motor
- air movement
- air noise
- air nozzle
- air oasis
- air opening
- air outlet
- air output
- air oven
- air parcels
- air passage
- air patenting
- air path
- air permeability