It is used to remove superfluous moisture from under the roof on the roofs without a ridge. Air Element creates changes in pressure under the roof resulting in moisture evaporating from the warmth-keeping jacket due to air motion. It is installed 0.5-0.8 m far from the ridge of a roof, and the air intake is provided on the overhangs. One aerator ventilates 5 m2 of a roof if the ventilated area under the roof isn't higher than 5 cm.