When setting up openings for make-up air, what should you ensure?

When setting up openings for make-up air, ensuring that they are located far from exhaust air intakes is crucial for maintaining efficient airflow and preventing contamination of the incoming air. Proper placement minimizes the risk of exhausted air being drawn back into the supply line, which can compromise air quality and system efficiency. Additionally, if make-up air is mixed too closely with exhaust air, it can lead to poor indoor air quality and may undermine the performance of HVAC systems by causing them to work harder to maintain desired temperatures and humidity levels.

In contrast, having completely sealed openings may hinder airflow and result in negative pressure, while openings that are large enough to provide adequate flow are important, but not as vital as positioning. Lastly, not placing them directly above heating sources is also an important factor to consider in a different context, as it relates to the effects of temperature on airflow rather than the primary intent of ensure optimal make-up air placement.