IAQ: Psychrometrics and Why Ducts & Registers Sweat

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In this IAQ (Indoor Air Quality) course taught by HVAC School, the focus is on moisture control and removal. Observable problems are discussed along with potential solutions for issues like ducts sweating and registers sweating. Psychrometrics are introduced along with the importance of understanding dew point in the conditioned and non-conditioned spaces.

Hours Total

Mins Video

Knowledge Checks

Final Exam

Bryan Orr, HVAC School

We need to seek to solve problems at their source!

When you increase the airflow to try to warm a sweaty register, you are actually making the humidity in the home worse. Instead, seal leaks in the building structure and in the ductwork, set the airflow correctly, and check for any pressure imbalances within the building that may cause humid outdoor air to enter the building envelope.
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