It depends. If you haven’t been actively maintaining them, then chances are you need some sort of work done on your air ducts. If they’ve been neglected for too long, they should probably be replaced—or at least repaired. This guide will walk through the most common tell-tale signs that you need an air duct replacement. Then, we’ll go over what repair, replacement, and maintenance entails. Let’s get started! Signs You Might Need a New Air Duct Although air ducts play…