Quote Originally Posted by Archerfish View Post
Right! One example is in a faculty room where the teachers are complaining that the said unit is no longer cooling the room unlike before. I asked my wife if the air filter is being cleaned every week and she said no.
in our case,
the aircon wouldn't cool well no more.
when we opened it to clean the filter...
"where's the filter!"
we were faced with a filter-less set of dirt-clogged heat exchange fins...