Key Implementations:

💡 Light-Activated Ventilation – Each restroom’s air extraction was triggered by its light switch. When a restroom light was turned on, one of the two blowers was activated, extracting air specifically from that floor. Once all lights on that floor were off, the blower was deactivated.

𖦹 Dynamic Speed Control with VFDs – An Arduino MEGA managed the system, integrating with ALTIVAR variable frequency drives (VFDs). These drives dynamically adjusted blower speed based on the number of active restrooms.

⚡ Energy Efficiency & Air Quality Improvement – By only operating when needed, the system minimized power consumption while ensuring a consistent airflow across all floors. This resulted in better air circulation and a more comfortable environment throughout the building.

Project Description

This project involved the automation of an air extraction system for 11 restrooms 🚽 in a three-story building.

The system was designed to activate two 1.5 HP blowers 𖣘 located on the rooftop, efficiently managing airflow through PVC ducting.