What Are the Difference Between Fiberglass, Pleated, and Reusable Air Filters? For clean, breathable air quality at home, we consulted a home appliance expert. This tends to be the most budget ...

Question from Anne: Which air filters are best, paper or fiberglass? The person who installed my air conditioner said to only use the cheapie filters because the papers ones don't allow airflow.

Filters were originally conceived to protect heating and cooling equipment, for example to prevent large particles from clogging the air passages of coils. The old, familiar fiberglass filters do a ...