Final answer:
Vents for ventilation and air circulation systems must be strategically placed and cannot be located anywhere. It's true that vents should be cleaned and filters changed regularly to ensure good indoor air quality.
Step-by-step explanation:
The claim that 'vents for ventilation and air circulation systems can be located anywhere' in salons, spas, and barbershops is NOT true. Vents need to be strategically placed to ensure efficient air exchange and to prevent the buildup of pollutants such as dust, chemicals, and other allergens.
It is indeed true that these vents should be vacuumed and cleaned regularly to maintain air quality and prevent the dust that can accumulate on vents from causing allergic reactions. Also, the filters within these systems should be changed regularly to trap dust and other pollutants, maintaining the cleanliness and functionality of the ventilation system. While good indoor air quality is critical in such environments, the placement of vents is equally important to optimize air flow and to ensure that pollutants are effectively removed.