We’ve posted about the importance of duct sealing on this blog before. Ducts may not seem like they need a lot of professional attention, but they can develop some serious issues if left alone for long enough. One of those serious issues is duct leaks. Duct testing serves as a way to identify any leaks in your ducts, so that they can then be sealed. Let’s take a closer look at what duct testing entails, and why you should have it done at least once a year.