mold in HVAC systems

https://bluecircuitry.com/s/4zau2DkHGp1Phwz0zUEKT

Mold in HVAC systems is a common but often overlooked problem that can spread through the air you breathe. It grows in dark, damp places like drip pans and coil fins, and once it takes hold, it sends spores racing through vents. You might notice a musty smell when the heat or AC kicks on, or find yourself sneezing more indoors.