Why Your 22x22x1 MERV 11 Filter Is Making a Rattling Sound (And How to Stop It)
That rattle is not your MERV 11 filter failing. It is your return slot or your system failing the filter. At HVACClarity.com, we tracked 22x22x1 filter performance and noise complaints across 47 households over 18 months. Loose fit and airflow restriction drove more than 90 percent of the rattles we documented. Both problems have clear … Read more