To help keep the air Harmless indoors, new out of doors air is needed to dilute these indoor pollutants and minimize humidity. Exhaust Vents: These vents expel stale or polluted air through the building. They are commonly located in locations like kitchens and bogs in which moisture and odors accumulate. https://edwinnmidx.blogaritma.com/35652217/the-greatest-guide-to-ventilation-installation