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Glass Fiber from HVAC System Through the Microscope

Glass Fiber from HVAC System Under the Microscope

The glass fiber becomes coated with small particles in the air stream of the HVAC system. Soot is a common component and tends to dominate the deposit. The beaded resin droplets can be seen on this fiber. The spider silk below the glass fiber has also collected some soot particles. This is from an environmental tapelift collected in a home.

Transmitted Off Cross Polarized Light Illumination


Significance in the Environment:

Characteristic Features:

The glass fiber becomes coated with soot, small minerals, and other particles small enough to pass through any filtration on the incoming air stream.

Associated Particles: