Commercial HVAC systems are built to last quite a while, especially with proper care and maintenance. Of course, you know that no amount of maintenance is going to get your system to last forever. Sooner or later, you’re going to need to replace your current HVAC system with a new one. When exactly should you do that? Well, the best way to know for certain is to schedule an appointment with a technician and have them evaluate your system. Before you reach that step, though, keep an eye out for the following signs that your commercial HVAC system could probably use replacing.