The right kind of filter depends on your health and indoor air quality needs. Filter ratings range from 1 to 16, with the higher numbers eliminating more from the air. If you feel that a standard filter isn’t meeting your needs, a media filter might be a good alternative. Media filters are made of pleated material that can catch debris and contaminants at a much higher rate than other types of filters. Keep in mind that the highest level of filtration can decrease HVAC efficiency because the filter is harder to push air through.