Many condos have individual air handlers under each window where hot or cold
(depending on season) water is pumped through from a central plant. The
cover comes off and a foam time filter can been seen and either replaced or
washed. While you are there you might want to oil the fan motor.
Other condos have house type air handlers or furnaces. Just change the
It may be almost anywhere. I suggest asking a neighbor.
Note: changing the filter may not help you reduce the dust in your
condo, but it should go a long way towards protecting the heating - cooling
system from that dust.
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