Why is Replacing Stale Air with Fresh Important?

ventilationReplacing stale air with fresh air or ‘ventilation’, is crucial for removing dust, excess moisture, smells, bacteria, smoke and carbon dioxide. Indoor environments benefit from ventilation by having replenished oxygen levels. Fresh air circulates throughout the space and gets rid of stuffy, unpleasant atmospheres. Effective ventilation is even more important nowadays, when we are all trying to stay safe and avoid illness.

Natural ventilation occurs when doors, windows or vents are opened, allowing wind and fresh air to enter the building. The same effect can be obtained by letting warm air rise up through a building, drawing in colder air behind it. Homes where there is a condensation problem often use this method to air and dry out the rooms. There are some downsides to these natural solutions however, such as their dependency on wind speed and direction. This may not be an issue for homes or small offices, but larger areas need some form of mechanical air conditioning. Having windows and doors open is also not ideal for security reasons.

Ventilation in Hospitals & Clinics

The scenario where people admitted into hospital pick up other infections is all too common, and a major culprit is inadequate ventilation. Of course there is always the chance of transmission via droplets or direct contact to consider. Ventilation and air conditioning are extremely important in medical surroundings as part of an overall set of procedures.

Ventilation requirements for most environments require the expertise of HVAC engineers to assess the needs of the building in question. The function of the building, types of user and reason for visiting along with amount of time spent there should all be looked at.

The Need for Ventilation in the Office

Ventilation in an office environment is important for a number of reasons not just, as you might think, for the comfort of staff. Most offices have numerous pieces of electrical equipment, all of which can overheat. Many computers have built in fans to keep the inner workings cool, but long term use can still cause issues. Ventilation is an essential component of computer rooms where heat build up is a problem. Cool air helps to preserve these machines, and the data stored on them.

Dust and dirt ‘build up’ around computers, scanners etc can spell trouble, and when mixed with humidity it can only get worse! Again ventilation is the answer, and a range of options are possible including:-


  • Portable air conditioners [for smaller homes and apartments)
  • Air conditioning systems (ideal for larger homes and offices)
  • Precision cooling (for hospitals, IT companies or data centres)

Your computer room’s temperature should remain above 10 degrees Celsius and below 27 degrees Celsius. A good temperature range is around 18-21 degrees Celsius.

The Perils of Dust

Dust build up is bad news where computers are concerned, and unfortunately they seem to attract it. Cans of compressed air are very handy as a quick solution, along with keeping the general areas vacuumed and dust free [don’t vacuum the actual computer though]. Dust and debris isn’t always visible and can build up out of sight. Danger signs in a computer room include : –

  • Excessive heat in the computer room even with the A/C on
  • Loud noises emanating from the HVAC units being used for cooling
  • Significant temperature swings above or below the desired level
  • Heightened humidity levels despite cooling efforts

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