Managing allergies usually entails balancing two things:
- Control of the allergy symptoms
- Keeping away from the substances to which we are allergic!
Air filters fall in the second category.
Keeping your air "clean" is a significant issue, whether you have allergies or not. But the issue is compounded by allergies and the need to remove allergens. The American College of Allergists says, "50% of all illness is aggravated or caused by polluted indoor air." This is a significant factor for people with inhalant allergy. Further, the EPA, in a report to Congress stated, "Indoor air represents one of the most important problems based on an estimated population risk."
With this in mind, air filters can be an invaluable addition to your other strategies for managing your allergies.
Air filters do not necessarily give you the same result that you would get with an air purifier. Air purifiers often remove a more significant percentage of particles in the air. If you are allergic to substances, which come in very small particle form, air filters would be a draw back for you. However, some filters (with better filtering capacity) may be sufficient in combination with other measures like frequent cleaning of your home.
Also keep in mind, filter systems require more attention to be used correctly. Filters will usually require changing and this means maintenance for you. It will also usually entail ongoing costs.
Some air filter systems will address the air inside your whole home. Others will deal with air quality in a room or a limited area. Some will handle mold and other "living" allergens. Some focus on the removal of particles. Depending on the severity of your allergies and the limits of your budget, you will have to decide what level of air filtration will work best for you.
If you have severe inhalant allergies, be sure to use allergy-friendly cleaners and vacuum cleaners to supplement any air filtration approach.