Most fiberglass filters are 5% filters, this means that they stop only 5% of the particles which pass through them. For better indoor air quality, and increase furnace system longevity use an electrostatic filter. High efficiency filters can stop from 95% to 97% of the particles passing through them. These contaminants circulate throughout the house and you breathe these particles. Allergy suffers can find relief with better filtration and regular air duct cleaning. Service life and cost of operation of your furnace can be improved by having less particles passing through the system.
The moral of the story is buy a good filter and clean your ducts regularly for health and increased service life and efficiency of your furnace. This advice can improve your life and save you money in the long run.
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