Best Air Purifier for Pollen, Mold, Mildew and Spores (2017 EDITION)

The nature allergens as people would call it, pollen is a very fine powder produced by trees or plants which incidentally is one of the most common cause of allergies in United States. In this best list post, we will look into the cause of an allergy, the many symptoms, who is this for and what can be done. What is in our considering list is the air purifier pollen CADR figures (if available), its HEPA filter effectiveness against mold, pollen, mildew, spores and room size coverage that the air purifier can support. At the end of the day, there is bound to be one pollen/ mold air purifier that would assist in alleviating your long-term allergies troubles.

What is pollen allergies?

People that is allergic to pollen due to the body mistreated pollen as a harmful particle thus produce chemicals to counter it. Also known as disorder immune system, our body would react with common symptoms such as sneezing, stuffy nose, itchy skin, watery eyes, cough, scratchy throat to the more serious hay fever (Allergic Rhinitis) or triggering an asthma attack. Pollen allergies usually occurred on a seasonal basis (spring, summer, and fall) where microscopic particles are released from trees, weeds, and plants as part of the reproduction process. There are many ways to alleviate pollen allergy ranging from allergy shots, natural home remedies or simply by staying indoor. What we will be focusing on is the air purifier method that helps protect you from airborne pollen, mold, mildew and spores so you would not have to disrupt of your daily routine.

How do we measure?

Pollen CADR The higher CADR scores the better it is. Measured in CFM (cubic feet per minute) on the amount of clean air that flows out of the air purifier. While Pollen CADR is an industry standard measurement by AHAM (Association of Home Appliance Manufacturers), the test is conducted at the highest fanspeed and not all manufacturers participate in their machines. Nevertheless, we would greatly consider it as part of our evaluation plan IF is available.
HEPA filter Pollen, spore, mold and mildew are all microscopic particles that in single cell, is hard to be seen through our naked eyes. Only a true HEPA filter would have the capacity in capturing these micron size allergens and that is precisely what we are looking for. Not only the HEPA filter has to great against pollen and similar type allergens, it also must play well with other filters in order to maximize the filter efficiency and lifespan.
Room size/ Coverage Pollen is mostly airborne and cause by external environmental factor. A substantial purifying coverage air purifier would have no problem covering an entire room from pollen and other allergens intrusion. While the wider purifying coverage the bigger room size it can support, that cannot be the sole factor. We judge the air purifier based on its intended category thus size, airflow speed, pricing would also play a big part as well.

Who is this for?

First and foremost people that has been officially diagnosed with pollen allergies by a doctor or allergist. Secondly a person that is suspected to be allergic to pollen/ mold with seasonal symptoms as above mainly on runny nose. Staying close to nature or has lots of tree/ plant with open windows all the time. Asthmatic person especially on children or elderly people that is at higher risk in triggering an asthma attack. Lastly anyone that needs clean air throughout the day free from pesky pollen, mold, spores and mildew.
For specialize asthma air purifiers that is excellent against asthma triggered allergens, please visit Best Air Purifier for Asthma and Allergies list.

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Pollen CADR
Pollen CADR
HEPA filter
With
coverage
Coverage

As  any of the Blueair Pro air purifier would also work, let's stay focus on Blueair Pro XL instead. Bypassing the hefty price tag,  this is probably the ultimate pollen eliminator you can get your hands to. It has the highest Pollen CADR to date, super-wide purifying coverage for any room size and undisputed powerful patented filter that traps all micron size particles including pollen, mold and mildew. Together with  the excellent HEPASilent Technology , Blueair Pro XL HEPASilent will remove virtually all known airborne pollutants.

Blueair Pro XL does have it downside and its "gigantic" literally. The bulky and heavy size does not fit well in constraint spaces, pricing wise its not favorable either.  If the excessive filtration is not needed, downgrading your choice is arguably the more sensible way to model such as Blueair Pro L or even the smaller Blueair Pro M. Alternatively Blueair Classic model would also do a bang up job as the next item list below.
Retail suggested cost*
+-
Annual filter cost^
+-
Check price on Amazon
Pollen CADR
Pollen CADR
HEPA filter
With
coverage
Coverage

Blueair Classic 605 is the equivalent of iPhone 7 to Blueair Pro as iPhone 7 Plus. It loses out to Blueair Pro in terms of airflow  CADR but by no means its an inferior machine. What you will get from this classic machine or in fact any Blueair purifier is the same HEPA Silent Technology that works its charm even against the finest airborne particles. Pollen, spore and mold that has been absorbed by the air purifier would have to go through a series of filtration thus eliminating any chance of airborne pollutants from getting out. Adding the best room size purifying coverage in its classic series, Blueair Classic 605 is unquestionably a very capable air purifier.

As a premium selection air purifier, Blueair Classic 605 is also very expensive both in cost and filter replacement. Depending  on your purifying needs, you could opt for the smaller purifying range version in its series that in return comes with a reduced body size and price.
Retail suggested cost*
+-
Annual filter cost^
+-
Check price on Amazon
HEPA filter
With
HyperHEPA Filter H12/13 (L)
coverage
Coverage
1098 sq. ft. (102 m2)

While many site did not include IQAir HealthPro Plus  in their "Best list" as it is not an online hot-selling model (psst its expensive), that certainly does not justify IQAir HealthPro Plus capacity. The latest version comes with an improve 25% more clean air,  32% more silent operation and 38% longer filter lifespan. What's unchanged is the remarkable HyperHEPA filtration that effectively tackles micron size allergens as small as 0.003 microns let alone Pollen, mold and mildew. Top it off with a leading 6 fanspeed mode and one of the widest purifying coverage for any room size, you can never go wrong with IQAir HealthPro Plus.

That is of course if you have the budget for the machine and future filter replacement. One good thing is the cost of ownership is way less than Blueair Pro XL. Consider the next air purifier if you want an air purifier that is more feature oriented and cost much less.
Retail suggested cost*
+- 899
Annual filter cost^
+- 152
Check price on Amazon
Pollen CADR
Pollen CADR
300 cfm (510 m3/h)
HEPA filter
With
HEPA-Silver Filter
coverage
Coverage
1100 sq. ft. (102 m2)

Alen BreatheSmart air purifier is another popular one that has high pollen figures and cost much less than the above list models. While the basic HEPA- Pure filter is good enough to cover for standard allergens, you will have to  upgrade to at least HEPA-Silver to fully take advantage of the air purifier effectiveness against pollen, spores and mildew. With 3 different  BreatheSmart models to  go for, we reckon this highest trim model that has the best room size purifying coverage. Also in the feature list is the air quality sensor plus Auto mode where you will appreciate the convenience and practicality Alen BreathSmart brings.

As a pollen/ mold air purifier, nothing much negative could you associate with Alen BreatheSmart as it is a well-balanced air purifier in performance, spec and price. The closest alternate model that would give it a fight would probably be Winix HR1000 which is next in our list.
Retail suggested cost*
+- 599
Annual filter cost^
+- 46
Check price on Amazon
Pollen CADR
Pollen CADR
301 cfm (511 m3/h)
HEPA filter
With
True-HEPA filter
coverage
Coverage
400 sq. ft. (37 m2)

As the matter of fact, either Winix HR950 or Winix U450 would also do the job but lets stay with Winix HR1000. Its considerably cheap compare with above options, comes with respectable pollen CADR, strong airflow delivery rate and ideal for large room size and coverage. Protecting you from all pollen link  allergens is a 5-stage filtration that includes a highly dependable True-HEPA filter similar to Winix HR950. Adding PlasmaWave technology, sensor plus Auto mode and Wi-Fi enabled in the bag,  you have yourself a very well-equipped air purifier.

Its not the smallest, cheapest and most silent air purifier in the market however, unless you absolutely need the highest-end model for the ultimate pollen eradication, we reckon Winix HR1000 would  best fitted for most residential use as with Alen BreathSmart.
Retail suggested cost*
+- 379.99
Annual filter cost^
+- 100
Check price on Amazon
Pollen CADR
Pollen CADR
300 cfm (510 m3/h)
HEPA filter
With
True-HEPA filter
coverage
Coverage
465 sq. ft. (43 m2)

Need something a little bit more affordable? Again and again Honeywell HPA300 is your answer. It has great Pollen CADR return, remarkable purifying coverage, a reliable (3 to be exact) HEPA filter and all at a much smaller framework. Without being pull down by the price,  Honeywell HPA300 is as effective as above air purifier in removing pollen, spores, mold and mildew. Not to mention the 5 years manufacturer warranty and great after-service support, once again Honeywell HPA300 is picked as the most budget-friendly pollen air purifier.

What you will not get in Honeywell HPA300 is the best in class CADR, widest purifying coverage and all the bells and whistle features in above model. Filter replacement cost is not the cheapest either but that is expected given Honeywell HPA300 low starting price. 
Retail suggested cost*
+- 299.95
Annual filter cost^
+- 108
Check price on Amazon

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