What is one of the main benefits of regular HVAC maintenance?

Regular HVAC maintenance significantly improves system efficiency. This process involves routine checks and servicing, which help ensure that all components, such as filters, coils, and ductwork, are clean and functioning properly. When an HVAC system operates efficiently, it uses less energy to maintain the desired indoor climate, leading to improved performance.

This efficiency translates into a more comfortable environment and can extend the lifespan of the system by preventing undue stress on various components. Regular maintenance can identify potential issues before they become significant problems, thereby keeping the system running at its best.

While improved efficiency often leads to lower energy bills, it does not reduce energy costs to zero, as indicated in one of the other choices. Additionally, regular maintenance can help prevent the need for repairs but cannot completely eliminate them, as mechanical systems will eventually require repairs due to wear and tear over time. Lastly, maintenance does not increase the size of the system; rather, it optimizes the existing system's performance.