A living space must possess a good ventilation system. A good ventilation system is all about guaranteed fresh air, frees the area from contaminants, while guaranteeing overall quality of the space. A good ventilation system can also combine both natural ways of ventilating the house like using windows and vents, alongside mechanical methods which includes installing fans. A good ventilation system must be centrally located, easy to operate, simple to clean and easy to maintain. Regardless of whether the house or apartment is big or small, a good air system is paramount.