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Digest

Understanding Ventilation in Hot Humid Climates

By Joseph Lstiburek

Building Science Digest 107: last updated 2009/04/22

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Adding outdoor air in hot humid climates causes moisture problems right? Sometimes. It depends on the condition of the house before you start to add outdoor air. Contrary to popular belief, most houses in hot, humid climates are over ventilated due to duct leakage and induced air change from internal air pressure effects due to unbalanced air flow and door closure.

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RR-0302: Roof and Attic Ventilation Issues in Hot-Humid Climates   RR-0302: Roof and Attic Ventilation Issues in Hot-Humid Climates
RR-0505: Residential Dehumidification Systems Research for Hot-Humid Climates   RR-0505: Residential Dehumidification Systems Research for Hot-Humid Climates
RR-0207: Residential Ventilation and Latent Loads   RR-0207: Residential Ventilation and Latent Loads
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