The Impact of Air Filters on Allergies and Asthma

Asthma and allergies are common respiratory diseases that impact millions of individuals globally. Indoor air quality is crucial because airborne allergens and contaminants can cause these diseases. Using HVAC air filters is one practical way to lessen the effects of these triggers. By absorbing and eliminating hazardous particles from the air, air filters significantly enhance the quality of the air indoors and lower the likelihood of allergic responses and asthma attacks.

Understanding Air Filters:

Dust, pollen, pet dander, and other airborne particles are among the pollutants that residential HVAC filters are intended to capture. They are usually used in HVAC systems (heating, ventilation, and air conditioning) to ensure that the air that circulates throughout the interior is cleaned and filtered. Different types and ratings of air filters like 14×17.5×1 or 16x19x1 are available, each of which is intended to catch particular particle sizes and concentrations.

How Air Filters Benefit Allergies and Asthma:

Removing Allergens: Eliminating allergies from indoor air is one of the main advantages of air filters. Pollen, dust mites, and pet dander are examples of allergens that can cause allergic reactions, which can result in symptoms including sneezing, itchy eyes, and respiratory distress. By efficiently capturing these allergens, high-efficiency air filters lower the chance of allergic flare-ups by keeping them from recirculating in the air.

Improving Air Quality: In addition to eliminating allergens, furnace filters also collect other airborne contaminants such as smoke, chemical vapors, and volatile organic compounds (VOCs). These contaminants have the potential to worsen respiratory ailments, especially in those who have asthma. Air filters contribute to a healthier home or workplace by enhancing indoor air quality and lowering the risk of asthma attacks and other respiratory problems.

Reducing Asthma Triggers: The long-term respiratory ailment known as asthma is typified by airway constriction and inflammation. Allergens, smoking, and pollution are a few factors that can make asthma symptoms worse. Residential HVAC filters are essential in removing these triggers from indoor air to relieve asthma sufferers and lessen their need for medication or hospital stays.

Choosing the Right Air Filter:

The rating and capacity of an air filter to hold particular particle HVAC filter sizes determines how effective it is. When assessing the performance of air filters, the Minimum Efficiency Reporting Value (MERV) rating method is frequently employed.

MERV 8: MERV 8 filters are appropriate for light business and household settings. Dust, lint, and some pollen are among the bigger particles that they can efficiently collect. They might not be as successful in getting rid of tiny particles like smoke or specific allergies.

MERV 11: MERV 11 Filters are thought to be a suitable option for people having asthma or allergies. Smaller particles, such as mold spores, certain bacteria, and the majority of pollen, can be captured by them. These filters are appropriate for the majority of household and commercial HVAC systems because they strike a balance between efficiency and airflow.

MERV 13: Smoke, germs, and viruses are among the even smaller particles that MERV 13 filters are capable of capturing with remarkable efficiency. People with severe allergies or asthma and those who reside in high-pollution areas are advised to use them. However, these filters can need to be changed more frequently and can also restrict airflow, which could have an impact on how well an HVAC system works.

Maintenance and Replacement Requirements:

Regular upkeep and replacement are necessary to guarantee that air filters remain functional. Filters that are unclean or clogged can restrict airflow, put stress on HVAC systems, and lower the quality of air indoors. It is advised to replace filters according to the manufacturer’s recommendations, which call for doing so more frequently in commercial or industrial settings and every three to six months for domestic uses.


The first line of protection against allergies is limiting exposure to allergens. The removal of allergens from the indoor environment and air cleaning can be achieved by installing an air filtration system in conjunction with a heating and cooling system by Custom Filters Direct. Particles are caught in filter screens using best-in-class filters.

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