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As the COVID-19 global pandemic continues to remain severe, people tend to spend more time in an indoor dwelling and, much of the time in the summer, people choose to sit at air-conditioned homes, offices, or travel in air-conditioned vehicles. In order to reduce the occurrence of health-care-related diseases, cleaning and disinfecting of such environment is critical as polluted air posed threat to human wellbeing, reduces the life expectancy due to cardiovascular and respiratory diseases, including asthma and pulmonary disease. People are less aware of disease transmission through air circulation in the air-conditioned environment. In particular, in the current times, virus particles, in addition to the various technological advancements such as the use of HEPA filters, appear to pass through the air from a person to the other. The present work examines the indexed publications in this area. The authors in this report have attempted to collect reports and studies on the HVAC system and the virus in order to get its illustration. The air filtration devices i.e. High Efficiency Particulate Air (HEPA) filters were found to play an important role in damping the rate of transmission of viruses.

Nowadays human race which is strongest of all creatures on the planet is frightened to move out without precautions because of coronavirus. In the current article, a brief overview of the use of air-conditioners available in different designs is addressed in context to COVID-19. Since this virus is often transmitted by exhalations from infected airways, so Heating, Ventilation and Air-Conditioning (HVAC) systems may be important to enhance or mitigate the spread of the infection in indoor dwellings. The design of the building is directly related to the airflow through the structure of the building. One of the biggest problems that is mushrooming out of this crisis is the use of air-conditioners. The air-conditioners produce artificial built environment, which in some cases may not be good for human beings. But at home for attaining thermal comfort, it remains a question mark, whether building architecture using air-conditioner is safe or not. The paper herein tries to co-relate the literature available for providing a brief communication to these questions.

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