Is your whole house air conditioning system not removing the moisture and humidity from the air like it used to? Make sure you have your fan set to AUTO and not ON. If you run your HVAC fan constantly it evaporates the moisture that your AC unit collects on the coils, not allowing it to run off into the drip pan and be removed from your house. Instead it is evaporated, putting the moisture right back into the air again.
So, give this a shot. Worked for me!