Is it true that the growth of debris on the filter and A/C evaporative coil contribute in a large way to the pollution indoors?
True. The filter & A/C coil are among the biggest sources of indoor contaminates due to the bionesting of germs and allergens that occurs. Indoor air is now more polluted than it was in the 1940s. In fact, the EPA ranks indoor pollution among the top four environmental risks to public heath. The dirty filter and AC coil are two of the largest reasons why indoor pollution have increased to such dangerous levels.
