The answer to 'system upgrade vs' is that upgrading your HVAC system can provide significant benefits, but the costs and complexity need to be carefully considered. Upgrading to a newer, more efficient system can improve comfort, reduce energy bills, and increase the value of your home. However, the upfront costs can be substantial, and the installation process can be disruptive.
When deciding between upgrading your HVAC system or maintaining your current one, consider factors such as the age and condition of your existing system, your energy efficiency goals, and your budget. In some cases, simple maintenance or targeted repairs may be a more cost-effective solution, while in others, a full system upgrade may be the best choice.