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Heating, ventilation, and air conditioning

Heating is significant in maintaining adequate temperature, especially during colder weather conditions. Two classifications of heating exist: local and central. The latter is more commonly used because it is more economical. Furnace or boiler, heat pump, and radiator make up the heating system.

Ventilation, on the other hand, is associated with air movement. Ventilation is necessary to allow carbon dioxide to go out and oxygen to ge in, making sure that people are inhaling fresh air. Stagnant air causes the spread of sickness (through airborne pathogens) and allergies. But it is also essential to maintain an efficient venilation system. Insufficient ventilation usually promotes the growth of bacteria and fungi such as molds because of high humidity.

The air-conditioning system controls the heat as well as ventilation. Alternatively, the split system or remote coils can be used. However, air ducts must be properly cleaned as pathogens thrive there otherwise. Return-air grills are also vulnerable to chemical, microbiological, and radiological elements.