Ventilating equipment can refer to a number of different things, though each share the common premise of being used for some sort of ventilation purpose. Ventilation is the process of replacing air in any space, in order to improve indoor air quality. Ventilation is used to control temperature, replenish oxygen, or remove moisture, odours, smoke, heat, dust, airborne bacteria, and carbon dioxide. Ventilation is also used to remove unpleasant smells and excessive moisture, to introduce outside air to circulate in a building’s interior, and to prevent stagnation of the air in a space.
Mechanical or forced ventilation occurs via an air handling unit or by direct injection to a space by a fan. A local exhaust fan can enhance infiltration or natural ventilation, thus increasing the ventilation air flow rate. Kitchens and bathrooms will typically have mechanical exhaust systems to control odours and to remove steam and reduce humidity. Other home areas may also benefit from ventilation systems, including laundries, living rooms and even bedrooms.
Industrial and commercial ventilating equipment and systems are much more specialised and will most often be significantly larger and stronger than domestic systems. Ventilating equipment and systems can include such items as fume hoods, biological safety cabinets, dilution ventilation systems, room air distribution systems and heat recovery ventilation systems.