| Have you heard about HVAC? "H-V-A-C" or | | | | it is the more preferred choice especially in |
| "H-VAK" is an acronym for Heating, Ventilation, | | | | workplaces. The heating system is made up of a |
| and Air-conditioning-which means the heating and | | | | furnace or a boiler, a heat pump and a radiator. |
| cooling systems of air found in homes, offices and | | | | Air movement is the next function of HVAC |
| other places. You need to have come across this | | | | which is well known as ventilation. Although there |
| term when talking to contractors, engineers, | | | | are many types of ventilation, they all have similar |
| colleagues and business partners or even the | | | | functions. To take in more oxygen and allow |
| maintenance guy from your office. Because we | | | | carbon dioxide ( CO2) to go out is what |
| need to control the climate of our interiors, | | | | ventilation is all about. People need to breath in |
| combining air comfort devices with air ventilating | | | | fresh air otherwise there are chances of air-borne |
| and air-filtering devices has led us to the | | | | illnesses spreading around due to stale air. |
| excogitation of HVAC. | | | | Ventilation is also required in the attics. If there |
| If the question is asked as to what exactly does | | | | isn't enough ventilation the humidity levels rise |
| the HVAC do? The answer is that it is responsible | | | | which in turn promotes the growth of bacteria |
| for monitoring the air temperature and air flow, | | | | and fungi such as molds. This can have a |
| maintaining the comfort level by heating or cooling | | | | damaging effect on the beams supporting the |
| and ventilating as well as filtering the air as and | | | | roof and the overlaying insulation because of |
| when required. The HVAC system is also called | | | | formation of tiny particles of condensed water |
| "climate control" because the above mentioned | | | | vapor. |
| three functions are crucial in maintaining comfort | | | | The next function of HVAC is air-conditioning |
| as far as everyday life is concerned. | | | | which comes in various sizes regulates the heat |
| If the HVAC can control the climate effectively, | | | | as well as the ventilation. Large air-ducts are the |
| then there is an obvious reduction in the number | | | | characteristic of most air conditions hence it is |
| of health-related risks. An increase in humidity | | | | advisable to check out the building first to confirm |
| levels can mar the body's ability to control body | | | | whether they can be properly installed or not. An |
| temperature. Sweat formed on the body does | | | | alternative is to use remote coils or the split |
| not evaporate easily and the person feels tired | | | | system. Regular maintenance of the air ducts is |
| and feeble. If the surrounding is not healthy, then | | | | necessary otherwise there is a risk of pathogenic |
| it can have a severe effect on the thinking power | | | | proliferation in dirty air ducts. And the most |
| of people. Illnesses like heat stroke, hypothermia, | | | | dangerous of them all are the return-air grill works |
| pyrexia, etc can also occur. | | | | which are at high risk of exposure to chemical, |
| Talking about the three functions of HVAC, | | | | microbiological and radiological elements. Hence, the |
| heating is substantial in maintaining adequate room | | | | return-air grill works of HVAC should be kept at a |
| temperature especially during winter conditions. | | | | height where access is denied but observation is |
| Heating can be classified into two types: local and | | | | possible as and when needed. |
| central. But as central heating is more economical | | | | |