How often should I clean my filter? by Highlands | May 31, 2023 | 0 comments A How often should I clean my filter? Category: Air Purifiers To keep your air purifier running at max efficiency you should wipe down the top prefilter mesh weekly. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.