Air supply

Ventilation is provided by an Air Handling Unit (AHU) and is used to control indoor air quality. Excess humidity, odours, bacteria and contaminants can often be controlled via dilution or replacement with outside air.

The Health and Safety at Work Act etc 1974 and the Workplace regulations 1992 both require a “safe and clean working environment” which includes the air quality in your building, whether that be a multi-level office building or a warehouse.

The effect of poor or inadequate air supply can and often does lead to sick building syndrome (SBS) and the greater circulation of airborne viruses.
br The main symptoms associated with Sick Building Syndrome are:

  1. dry or itchy eyes, nose or throat, skin or skin rash
  2. headaches, lethargy, irritability, or poor concentration.
  3. stuffy or runny nose

Good ventilation reduces the concentration of the virus in the air and therefore reduces the risks from airborne transmission.

This happens when people breathe in small particles (aerosols) in the air after someone with the virus has occupied an enclosed area. (HSE Dec 2020).

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