Just how often should you change your ac air filter?
Let's be honest: figuring out exactly how often should you change your ac air filter is one of those household tasks that usually slips through the cracks until your energy bill spikes or you start sneezing the second the unit kicks on. We've all been there, staring at that rectangular slot in the wall or the ceiling, wondering if the filter inside is still doing its job or if it's currently holding onto five pounds of dust and pet hair. ...