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The wool fiber air filter can be used as a replacement to the existing A/C air filter. Trim the wool air filter to the correct size for your unit. The air filter is constructed of wool fibers that are adhered to a reinforced mesh on the back.
It is to be oriented such that the wool fiber faces into the oncoming air flow and the mesh backing faces the A/C/ unit.
Advantages of the Wool Fiber Air Filter:
Absorption of Indoor Air Pollutants:
Indoor Air Quality (IAQ) is affected by many things including outdoor air quality, people and their activities, heating and ventilation, building materials, finishes, furnishings and floor coverings. Air contaminants, particularly VOC (Volatile Organic Compounds), can be generated by many indoor sources.
Wool is a natural protein made up of 18 amino acids. It has a complex physical and chemical structure, and 60% of the amino acids have reactive side chains. This complex chemistry provides wool with the ability to bind with several toxicants in air. Three important pollutants cited as health hazards in air are sulphur dioxide (SO ), formaldehyde and 2 nitrogen dioxide (NO ). Sulphur dioxide and nitrogen 2 dioxide are by-products of combustion processes involving fuels such as petroleum products and coal, and are produced by domestic appliances, open fires and vehicle exhausts.
Formaldehyde
Formaldehyde levels in indoor air can often exceed recommended levels, as formaldehyde is commonly used in resin-based wood products such as chipboard. The formaldehyde is slowly released as the resin hydrolyses, and emissions increase with temperature and humidity.
Formaldehyde has a high reactivity to proteins such as wool, it reacts irreversibly with reactive side chains on the protein chains and reemission does not occur. Wool is able to effectively and permanently remove formaldehyde from indoor air. If the temperature and humidity increase, and increase the rate of emission of formaldehyde, wool becomes more reactive and absorbs the formaldehyde even faster. Research has shown a rapid sorption of formaldehyde by wool at both high and low concentrations.
Practical trials involving the use of wool as indoor furnishings such as carpet or wall coverings in contaminated buildings have demonstrated the reduction of formaldehyde concentration to less than 0.05 ppm (lower than WHO, EPA and FEMA recommendations)
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