HVAC - Ventilating a Building

Heating, ventilating and air conditioning are the three main aspects of HVAC systems. In some structures, this is sometimes combined with the additional refrigeration aspect if there is a need to freeze or keep frozen things or units which are integral to the function of the building. In many commercial or industrial buildings, only heating, ventilating and cooling are used. Contractors usually pattern the features of the unit to the needs of the building according to its size and area. 

For the People

Many HVAC installers and contractors rely on the design of the building when it comes to the capacity and the design of the heating, cooling and ventilating itself. Some buildings may not need as much ventilation as others if it is designed to be airy with less closed windows and doors. Lower types or smaller buildings may not need a large unit to provide ventilation as well as cooling and heat. Skyscrapers are usually good examples for buildings that need a reliable heating, cooling and ventilation system. 

The comfort of the occupants of the structure is usually foremost in the minds of installers or manufacturers of any HVAC unit or system. The geographical location and the nature of the work of the occupants are considered when it comes to it. The quality of indoor air is one of the priorities of this system along with reasonable cost and maintenance of the installed unit which controls it. There are many units that come with a filtration system that helps to eliminate or partially eliminate the occurrence of dust, bacteria and other elements which may potentially harm the people in the building.

Equipment and Supplies

HVAC also plays a vital role in keeping equipment and supplies in good condition. Some structures or establishments require a cooling or freezing system kept at a fixed temperature for the good of supplies such as food, medicines and other perishables which will need to be kept frozen to ensure freshness or at least that they will last longer. Refrigeration is necessary for these kinds of structures and they are usually smaller ones compared to the buildings that really need the three aspects of heating, ventilation and air conditioning. 
Some hospital and computer equipment also require certain coolness for them to function well or the absence of dust to ensure that they do not corrupt easily. Dust can emancipate computers if there is not enough maintenance or cleaning while its presence itself can exacerbate the corruption.