WeavAir offers a sensors array network and predictive analytics solution that will fundamentally change the way we manage buildings, saving energy while reducing the health impacts of poor indoor air pollution. It is the first system to combine physical, chemical and biological metrics in a small module that can be added to any HVAC system, providing comprehensive insights on indoor environment, in which we spend more than 80% of our day. The data is shared securely with building managers, contractors and occupants via a blockchainbased digital ledger. Our algorithms provide a way to not just detect issues early, but also provide a way to fix them. The system will prevent contamination issues, helping save over $45 B per year and will reduce building energy consumption by 11 Billion BTU each month. It will also help improve our comfort and health, saving organizations over $6.5K/person/year.