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Indoor Air Quality

Healthy Climate Solutions.

On average, Canadians spend 90% of their time indoors. Indoor air quality is more important now more than ever. The 2 main sources of contaminants in your home can be classified as chemical or biological. Examples or chemical could be paint, chemical odours, second hand smoke etc. Biological examples could be dust, mold spores, bacteria and viruses.

Most homes typically have a 1” filter used to trap large debris from entering the furnace. Lennox offers filtration systems up to MERV 16 and can include filtration media and germicidal lights for extra protection.



MERV, or Minimum Efficiency Reporting Value, is a number from 1 to 16 that is relative to an air filter’s efficiency. The higher the MERV, the more efficient the air filter is at removing particles. At the lower end of the efficiency spectrum a fiberglass panel filter may have a MERV of 4 or 5. At the higher end, a MERV 14 filter is typically the filter of choice for critical areas of a hospital (to prevent transfer of bacteria and infectious diseases). Higher MERV filters are also capable of removing higher quantities of extremely small contaminant (particles as small as 1/300 the diameter of a human hair). A higher MERV creates more resistance to airflow because the filter media becomes denser as efficiency increases. For the cleanest air, a user should select the highest MERV filter that their unit is capable of forcing air through based on the limit of the unit’s fan power.


  • Healthy Climate 10

    The Healthy Climate® 10 filters out dust, pollen and other particles to make your home's air healthier.

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  • Carbon Clean 16

    The Carbon Clean 16® uses industry-leading MERV 16 filtration to remove allergy-aggravating particles from your home’s air.

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  • PureAir™ Air Purification System

    The PureAir™ system uses exclusive UVA-light technology to attack all three classes of indoor air contaminants–particles.

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