Equipment works more efficiently, like HVAC units, and sizing mechanical systems are easier because building owners don't have to compensate for drafts.When conditioned air leaks out of a building and unconditioned air leaks into a building we must then use additional energy to then condition this air. Air leakage can result in an increased use in energy costs of up to 30-40% in heating climates and 10-15% in cooling costs. (Source Investigation of the Impact of Commercial Building Envelope Air Tightness on HVAC Energy Use).
Moisture laden air is also barred from entering the building which assists in reducing the corrosion of metals and mold growth.
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Air barriers, especially when used to separate two different environments within a building, can protect one occupant from another occupant's pollutants (such as second hand cigarette smoke), odors (such as cooking odors) and noise (sound delivered by air transport).
Contractors applying air barrier systems should be members of the Air Barrier Association of America which provides ABAA certification and continuing education. For more information, visit the ABAA website or visit us online.