A typical furnace filter 1”-2” is there solely to protect the furnace equipment. It is designed to keep some of the dirt out of the blower motor and wheel and will not affect the air quality within the home. There are many types of air cleaners on the market that will help to reduce the amount to dirt, pollens, moulds, mildews, pet dander etc that may be circulating through your air ducts.
Mechanical filters are installed between the return air duct and the furnace and will simply trap those particles as they pass through. They are very user friendly and only require a change of the filter media once or twice a year depending on the particular product.
Electronic air cleaners do the same job, but ‘zap’ the particles as they pass through. They require the cells to be removed, washed and thoroughly dried before being reinstalled.
This should be done every 4 to 6 weeks. For those who have severe allergies, asthma or other lung conditions; HEPA filters are recommended. These offer better filtration as well as a carbon component that removes odors and VOC contaminants. Volatile organic compounds (VOCs) are found in building materials, paints, glues etc. A professional contractor will be able to recommend the right product for a home. Regardless of what air cleaner is chosen, it is important to recognize that in order for the unit to properly do its job, the furnace fan should be in the “on” position at the thermostat.
For more information on professional duct cleaning, visit www.cancoclimatecare.com.