Schools | Offices | Commercial Buildings

HEPA Filter Solutions 2021

MayAir Approaches for covid-19

HEPA Filter Solutions 2021: The World Health Organization (WHO) declared novel coronavirus disease 2019, COVID-19 as a global pandemic on 11th March 2020. By January 2021, there are over 90 million confirmed cases with more than 2 million reported deaths from it. Based on researches, coronavirus, SARS-CoV-2 is an infectious respiratory virus that could cause cells infection on the respiratory mucosa which will affect human health ranging from a common cold to severe pneumonia. Studies found that the coronavirus particle is as small as 0.06 μm up to 0.14 μm. 

These minute pathogens are transmitted primarily through aerosols generated by coughing, sneezing or even talking which can remain infectious in airborne typically for a few hours over long travelling range. Therefore, it is important to understand and learn how to control the transmission of airborne viruses especially in an enclosed space like offices and schools since we spend about 90% of our time indoor (according to the findings from EPA).

Size Comparison PM10 - Pm2.5

When used along with other best practices recommended by CDC and others, filtration can be part of a plan to reduce the potential for airborne transmission of COVID-19 indoors. American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) suggested filtration with HEPA or high-MERV rated filters as an effective and energy-saving way to indoor air cleaning. 

Viruses are typically ranged from about 0.01 μm to 0.2 μm in size, but they tend to be clustered or attached to larger particles which could eventually be captured by HEPA filters. Therefore, installing HEPA filters in a HVAC system can effectively reduce the airborne concentration of the virus and thus minimize the risk of its transmission through air.

Covid Particle Transmission
HEPA Filter

Engaging portable air purifier

Changes in configuration of existing HVAC ventilation systems might not be an option in some cases. Adding multiple-stage filtration HVAC systems could increase its pressure drop which results in poor system performance and excessive energy consumption. In this case where the modification of system is not feasible, it is recommended to engage a portable air purifier equipped with HEPA filter.

MayAir Proposes

Air Purifier with HEPA Filter

D-Guard 5

High Air Flow
Anti-Microbial Air Purifier

Negative Air Machine


Dual Mode Air Purifier
(with Negative Air Mode)

**All information and recommendations on these pages are provided as an advisory for informational purposes to the public only. Personnel that responsible for the safety of building occupants should evaluate and decide on the filtration solution based on their building space situation. It is recommended to consult a qualified HVAC specialists to review on all the aspects of the building ventilation.**

Upgrade existing HVAC systems with HEPA filters

The Centers of Disease Control and Prevention, CDC suggested to upgrade HVAC systems with HEPA filters that could reduce the spread of disease and lower the risk of exposure in an enclosed buildings with high number of occupants such as offices, schools, healthcare facilities, retail buildings and any other areas where higher risk protection is desired.2 ASHRAE recommends the use of at least MERV-13 or higher-MERV rated filter in a centralised HVAC system where modification of the system is feasible. 

MayAir has been introducing its HEPA filters with Argenzil Silver-ions antibacterial system, a composite filter media integrated with silver ionic technology, that is capable to disrupt the cell wall and protein synthesis of microorganisms which in turn, restraining their growth and reproduction.

MayAir Proposes

V-shaped HEPA Filter


High Efficiency Particulate
V-Shaped Mini-Pleated Air Filter

Minipleat HEPA Filter


High Efficiency Particulate
Mini-Pleated Air Filter

HEPA Filter with Separator


High Efficiency Particulate
Air Filter with Separator

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