Natural ventilation, mechanical ventilation, and hybrid (mixed-mode) ventilation are the three types of ventilation that can be utilized in a building.
Partitions and furniture, for example, can affect how much air circulates through a given area of a structure. If exhaust vents are placed too close to air supply vents, polluted outdoor air will be sucked back inside the structure.
As part of routine maintenance, ventilation systems should be checked, cleaned, serviced, and any worn or broken parts replaced. Each of these routine checks can help forestall problems and identify developing ones before they require expensive, unforeseen fixes.
Typically, a balanced ventilation system will consist of two fans and two sets of ductwork. While it is possible to install a fresh air supply and exhaust vents in every room, a typical balanced ventilation system is created to give fresh air to bedrooms and living areas where people spend the most time.