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a) A drop in performance of just 2% is likely to exceed the
cost of providing good indoor air quality. (HEVAC Indoor Air
Quality Initiative 1996.)
b) Office workers concentration will decrease by between
30% and 50% as the temperature rises above 24°C. (HEVAC Indoor
Air Quality Initiative 1996.)
c) As the temperature rises above 35°C, staff become much
more vulnerable to accidents and their mental performance
declines accordingly, resulting in a reduction in quality
and output. (HEVAC Indoor Air Quality Initiative 1996.)
d) Indoor air quality problems are responsible for over $1
billion annually in the United States, in direct medical costs
(Enviros, April 1994). Lost productivity due to absenteeism
brought about by discomfort is $1-$10 billion per annum (Enviros,
April 1994).
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