Our Picks for Best Furnace Filters for Allergies

By | April 7, 2022

Allergies are a nuisance that can affect some more than others, but there is a way to help reduce allergies in a home.

Some years are worse than others for allergies, with this being a bad year for allergies, at least for me. Locally where I live, the dust and pollen in the air seem to be worse than usual, making me sneeze constantly and a nose that won’t stop running.

Besides allergy medication, there is not much I can do about it at work, but while at home, there are things that can be done to help those like me that are sensitive to allergies.
Best Furnace Filters for Allergies Overview
One of the main things is to have a good air filter on your furnace or HVAC system.

All furnaces have a filter that is meant to keep the system clean from debris that can build up and block airflow.

Having good airflow in an HVAC system is important for it to regulate the temperature. If the airflow is blocked, the temperature inside a furnace will rise until a High Limit Switch shuts it off.

Most everyone knows that the filter needs to be replaced every 1-3 months depending on how much dust and other debris is in the air.

The right furnace filter can improve the air quality of a home and reduce allergies.

Cheap low-cost filters are commonly used and work well enough to keep debris from clogging up an HVAC system, but they do little in cleaning the air in a home.

What Makes a Good Furnace Air filter to Help Reduce Allergies?

Air filters are rated with a MERV or MPR rating that measures the particle size that can pass through.
When the size is smaller, it can capture more particles helping to keep the air free of toxins.

There are also electrostatic filters that build up an electrostatic charge that dust clings to and removes air toxins.

Allergy surfers should get a filter with a Merv filter rating of at least 9-12.
Merv rating can go higher for those who need cleaner air. A 13-16 Merv filter would be better for those who have very bad allergens.

How To Buy a Replacement Furnace Filter

Replacements filters are measured in width and length to fit into place.

Filters will have measurements on them, such as 20-X-25, which means 20 inches wide, and 25 inches in length.

A tape measure can also be used to measure width and length for a replacement.

Below is our picks for the best furnace filters for those who have allergies.

As always, be sure to read the reviews on Amazon or elsewhere to be sure one is a good fit for your home.

*This post contains affiliate links.
Our Picks for Best Furnace Filters for Allergies

  1. True Blue Allergen Protection
  2. True Blue Allergen Protection 16x25x1 Air Filter, MERV 11, 4-Pack

    True Blue makes filters for those who are prone to allergies.

    They have a MERV rating of 11, which is a very good rating that will pull out small particles from the air as it flows past the filter.

    This includes dust, smoke, or even mold particles that get caught into the filter as the air cycles through a home.

    They have different sizes to fit almost any furnace or return air filter along with multi-packs.

  3. Filtrete
  4. Filtrete 20x25x4, AC Furnace Air Filter, MPR 1550 DP, Healthy Living Ultra Allergen Deep Pleat, 4-Pack (actual dimensions 19.88 x 24.63 x 4.31)

    Filtrete makes good filters that can improve a home’s air quality.

    It has a good MPR rating of 1500, which is equivalent to a MERV rating of 12.
    This gives it 3-10 micron-sized holes to grab particles in the air or will catch 90 percent of dust mite debris, pollen, and mold spores flowing through it.

    If you have moderate allergies, then Filtrete is a good option.

  5. AllergyZone
  6. AllergyZone 20x25x1 MERV 12 Allergen Trapping HVAC Furnace 1″ Air Filter, 4 Pack

    AllergyZone makes filters specifically for those with allergies.

    They can remove up to 95% of airborne allergens, which in turn cleans up the air.

  7. Nordic Pure
  8. Nordic Pure 20x25x5 MERV 12 Pleated Honeywell Replacement AC Furnace Air Filters 2 Pack

    Nordic Pure makes many good filters with this electrostatic version.

    Electrostatic units build up a static electric charge as air flows through them. This helps in capturing and holding particles that other filters let through.

    Besides electrostatic disposable, there is also washable permanent electrostatic. Washable costs more initially but is cheaper in the long run since they can be used over and over again.

Having a quality furnace filter will significantly improve the air inside a home.

How often a filter is replaced depends on the environment. For example, those who live in a desert with a lot of dust will need to change it much more often than less debris in the air.

Units with good Merv ratings also have smaller particle sizes that capture more, which often need replacement much sooner than less effective units.

Pleated air filters are also a good option since they have more such areas and capture more airborne pollutants and allergens such as pollen, pet dander, spores, dust, and lint.

HEPA filters are also good to use as they have a very good rating for filtering the air inside a home or office.

While they are usually changed every 2-3 months, each home is different and may need changing more often for the best results.

Disposable units, while cheaper initially, can cost more after long-term use since they need to be thrown away once dirty.

Washable units are more expensive to buy but can be cheaper after long-term use since they can be used over and over again.

Outside your home, not much can be done, but a good filter can make a big difference inside your home.

Do you have a favorite brand for allergen air filters that clean the air in your home? Let us know your thoughts below.

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