With the installation complete, I turned on the power supply, ready to test the AC unit and its bio feature. The unit sprang to life, and I could feel the cool air spreading throughout the room. The bio feature also activated, silently working to filter and purify the air, providing a healthier and more comfortable environment. Satisfied with the successful installation, I took a moment to explain the AC unit's features and controls to the homeowner. I demonstrated how to operate the unit, including the bio feature, and emphasized the importance of regular maintenance to ensure optimal performance.