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Research
has shown that indoor air is often more polluted than outdoor.
The levels of some indoor pollutants can be as much as 20~
30 times higher than outdoors. These findings are even more
important when you realize that most people spend 75~ 90%
of their time indoors. A good quality Electronic Air Cleaner
filters out the air pollutants, giving occupants cleaner and
healthier air to breath. Now, let us enjoy Clean Healthy Air!
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WHY
YOU NEED CLEAN HEALTHY AIR?
Some
Common Indoor Air Contaminations
Carbon
Dioxide is present in the
polluted atmosphere at a concentration of about 0.03%. Since about
5% of the air we breath out is carbon dioxide, the level increase
in inadequately-ventilated occupied rooms.
The level of carbon dioxide is therefore often used to assess the
efficiency of ventilation. Outside sources include vehicle exhaust
fumes or other exhaust.
Carbon
Monoxide
Any process of combustion can produce carbon monoxide, including
cooking and tobacco smoking. A major source of carbon monoxide is
vehicle exhaust.
Formaldehyde
is a colourless gas with pungent odour. It is found in hundreds
of different products, including insulation material, ceiling tiles,
particle board, ply wood, office furniture, carpet glue, various
plastic synthetic fibre in rugs, upholstery and other textiles,
paint and paper. The level of emission increase with temperature.
Respirable
Suspended Particulate
Respirable particle, released from incomplete combustion, can deposit
in the respiratory tract or lungs depending upon the size of the
particle.Indoor sources, Respirable particulate (10 micro-meter
and smaller) are those that can penetrate into the lungs.
Biological
Contaminants
Biological contaminants include bacteria, fungi, viruses, algae,
insect parts and dust, which may result in allergenic or pathogenic
reactions. There are many sources for these pollutants: pollens
from outdoor, viruses and bacteria from humans, hair and skin flakes
from household, pets etc. Many biological pollutants can multiply
in stagnant water in cooling towers, in water damaged ceilings,
walls and carpets. Biological pollutants may be distributed through
the HVAC system.
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