Making sure air filters are clean decreases the amount of dust in your home. You know what that means - less time cleaning and more time drinking martinis! EXTRA TIP: When installing it make sure you put the date it was installed on it! You should also check to see if your air conditioning or heating unit needs a thorough cleaning. If you or someone in your home is sensitive to dust - or you just moved into a new home - you may want to go the extra mile and call a professional duct cleaning service. This can often be done for $75- $300, depending on the size of home, but it can be well worth the cost to get the dust mites, irritants, and general house grime out of your duct system. Its especially beneficial if you've recently completed renovations in your home which has created excess dust. (One Jane had this done recently, and was amazed - or should we say repulsed - when she saw the amount of filth in her air ducts!).