Occupancy-aware HVAC control can save energy and keep you comfortable by adjusting heating and cooling based on whether you're home. By using smart devices like connected thermostats, occupancy sensors can predict when you'll be home. A study in Colorado found that this system can save up to 5% on energy without making you feel too hot or cold. By balancing comfort and savings, you can adjust your HVAC system to save even more, up to 13.3%. This smart system makes your home's heating and cooling more efficient and tailored to your needs.