Month: April 2020

HVAC Strategies To Reduce Contagion

Among the strategies to achieve a good CAI, we recommend natural ventilation, mainly, especially in homes where there is no mechanical ventilation, as it helps to dilute contaminants within a space, as well as to maintain a Relative Humidity (RH) between 30 and 60 percent.

We also comment that the use of HEPA filters is recommended in isolated places such as clinics and hospitals since it is in this type of space where its qualities would really be used to stop viruses; In addition, he said that they consume a lot of energy, which is why they are not convenient for homes. In offices and shopping malls, mechanical ventilation must also have filtration.

The use of UV rays in air conditioning (AA) systems is one of the most widely used methods of sanitizing. To ensure their efficiency, they must be placed in the air handling units and directed towards the coils or placed in the air ducts, “although if the UV ray is not correctly positioned, it will lose efficiency, since in these devices the air passes too much Quick.”

As for electrostatic filters, they ionize the particles and make the particles stick to some sheets, thus reducing the need for power in the engine. They are recommended in naturally ventilated spaces, where he also advised using operable openings to control flow.

In the case of air conditioning and refrigeration equipment, cleaning is essential, especially in divided equipment, whose coils must be cleaned with a specific disinfectant and constantly. Air handling units should also be checked frequently, and for now, MERV 6 or 8 filtration levels be brought down to a minimum of 11, for added safety.

Likewise, we urge service providers to use safety equipment (gloves, masks, and glasses), wash their hands at the end of their work, but also the glasses and protectors that have been used while, for the mask, follow the manufacturer’s recommendations is the indication.

Finally, specify that the best resource to safeguard people’s health is cleaning equipment, whether in the home, offices, shopping centers, and hospitals. The provisional spaces for treating patients with COVID-19, you must have “a supply of filtered fresh air and an extraction of filtered contaminated air before expelling it into the environment, in addition to the mini-split, since it is one thing to condition for comfort thermal and another is to ventilate to have air quality. Both aspects must necessarily be there”.

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