ASHRAE, American Society of Heating, Refrigerating and Air-Conditioning Engineers; Airborne viral transmission; CIBSE, Chartered Institution of Building Services Engineers; COP, Coefficient of performance; COVID-19; COVID-19, Coronavirus disease 19; CaCl2, Calcium chloride; Economic analysis; HCO2K, Potassium formate; HEPA, High-efficiency particulate air filter; HVAC energy consumption; HVAC, Heating, ventilation and air-conditioning; Humidity control; IAQ, Indoor air quality; IBV, Infectious bronchitis virus; IL, Ionic liquid; LiBr, Lithium bromide; LiCl, Lithium chloride; Liquid desiccant; MERS-CoV, Middle East respiratory syndrome coronavirus; MERV, Minimum efficiency reporting value; PRRSV, Porcine reproductive and respiratory syndrome virus; REHVA, Federation of European Heating, Ventilation and Air Conditioning Associations; SARS-CoV-1, Severe acute respiratory syndrome coronavirus 1; SARS-CoV-2, Severe acute respiratory syndrome coronavirus 2; TEG, Triethylene glycol; TGEV, Transmissible gastroenteritis virus; UVA, Long-wave ultraviolet light; UVB, Middle-wave ultraviolet light; UVC, Short-wave ultraviolet light; UVGI, Ultraviolet germicidal irradiation; WHO, World Health Organization