Learn how duct systems can spread contaminants and why outside air intakes are important. You need to know how airflow affects a space and how the occupants' attitudes can make an HVAC system seem bad. IAQ is important to any HVAC worker.

About the Author

Leo A Meyer

Leo A. Meyer has been connected to the HVAC industry for over 50 as a sheet metal worker, instructor, dean of instruction, teacher trainer, consultant, and writer. He is currently Director of training for LAMA Books/Leo A. Meyer Associates Inc., a company dedicated to HVAC training.

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