I buy the blue fiberglass air conditioner vent filters. They usual come 4 in a pack for about $2.00. Instead of changing them and throwing them away every 4 months, I vacuum them, reuse them and they are as good as new. Also, I spray a little Lysol on them to keep mold and mildew to a minimum. It works great.
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Hubby has shown me how to re-use air cleaner filters by washing them out in the bathtub. Just let them dry and reuse! (Especially good for older cleaners with hard to replace filters.)
Do you buy those cheap cardboard furnace/ac filters and replace often throughout the year because they get dusty and dirty? Even though they are cheap, I find that I can vacuum the dust off the filters carefully and reuse them.
