I've never tried reusing the filters. They are some synthetic material with a paper like consistency, and over time build up mildew. Iwash with soap weekly and change every 4-6 weeks. In bulk they run maybe $8 each. A season worth cost less than one month phone bill.
I leave it set to no more than 45% humidity. Enough to prevent dry throat but not enough to cause condensation problems.
I leave it set to no more than 45% humidity. Enough to prevent dry throat but not enough to cause condensation problems.