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Product Description

The Filtrete Micro Allergen filter offers very high performance at a very reasonable price - and is probably the best bang-for-the-buck in disposable furnace filters. It removes allergens like Pollen, Mold Spores, Dust Mite Debris, Household Dust, Lint, Smoke, Pet Dander, and Smog. Like all 3M Filtrete filters, the Micro Allergen filter lasts for 3 months, and is electrostatically charged, which helps it to attract even the smallest particles without restricting the airflow in your system.

• Try the Advanced Allergen filter if you have allergies or pets
  My house uses forced air for heating. The disadvantage of such a system is that it distributes the dust in the air everywhere in the house. However, it is supposed to be possible to filter out the dust. Over the years, I have steadily increased the quality of the filter that I use for my forced air heating system. However, until now I have not noticed any obvious difference in my allergic reactions that seem to start with the heating season.
  
  There are two cats in my house. I have read that cat dander, tiny flakes of cat skin shed by the cats, is five times smaller than household dust particles. It stays in the air much longer than ordinary dust before it settles. Because of its small size it requires a more efficient filter to get it out of the air.
  
  Until this year, I have used of variety of filters with mixed results. However, this year, I started using the 3M Advanced Allergen Filters, the ones in the blue wrapper. These have a 3M Microparticle Performance Rating of 1500, but do not have a MERV rating listed. MERV stands for Minimum Efficiency Reporting Value and is a number from 1 to 12, produced from a test designed by the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE). A higher MERV rating indicates better filter performance. 3M uses particle data between 0.3 and 1.0 micron size to calculate a Microparticle Performance Rating or MPR. The higher the MPR, the better the filter. However, higher rated filters cost more.
  
  Here are some of the Filtrete filters offered by 3M:
  Dust & Pollen Filter, Microparticle Performance Rating 600,
  MERV rating of 8
  Micro Allergen Filter, Microparticle Performance Rating 1000,
  MERV rating of 11
  Ultra Allergen Filter, Microparticle Performance Rating 1250,
  MERV rating of 11
  Advanced Allegen Filter, Microparticle Performance Rating 1500,
  MERV rating not available
  
  The difference made by the Advanced filter was immediately obvious. My running nose stopped running. I assume that the new Advanced filters must be taking out more of the dust in the air including the cat dander. I have not noticed a change in the speed of the circulated air. The additional cost of the Advanced filter is worth it if you have allergies or pets. However, if you are happy with a lower-rated and lower-cost filter, then you can continue using that one I suggest that you check Amazon and vendors on the web to get the best price. ...more info
• they are great but man, I change them like crazy!
  Yes, these filters are amazing! I love them, there's no doubt. I have the pet dander and the occasional smoke (only in the winter-they go outside the rest of the year) and you would hardly know that someone smoked in the bathroom after 5 minutes.
  
  My issue is that I have to change them soooooo much. I have tried the 90 day plan, but WOW that was so not in the cards. My house is barely 1000 sq. ft. so I can't believe that there's that many prarticles and "Junk" running through the air. Actually it's gross to think you breathe that huh?
  
  I had my duct and furnace cleaned out at the tune of almost $200 and the gentleman told me it looked great and now it's even better. So the need to change my filter is now still down to inside a month!!! I just put this new one in around the 24th or so of January and you wouldn't know it. It's horrid!!! I'm going to need to go out and hunt one down until I can get my order for them in. Also, you can find them much cheaper than on Amazon p.s. Found them for about $[...] total cost with a rebate included on a site I randomly found while doing a goggle. It's called "IAQ Source".
  
  I'll still get them cause they they make dusting easier...thanks 3M...I think. ...more info
• air filters
  It was nice to find the size I needed on line. The stores that normally carried that size were all out. My supply was delivered promptly and it was a pleasure to have them when I needed them....more info
• Clean living at its best!
  I've used these Filtrete air filters for several years in different houses and I am very pleased with them. Yes, they are pricey but if you're prone to sneezing fits (as I am), they're worth every penny. Supposedly, the filter media is fine enough to capture even wee tiny particulate matter, including smoke and smog.
  
  In addition to breathing easier and filtering out nasty smells from your house (which are huge benefits), I've noticed that using these filters also helps keep the house and tabletops cleaner, and there's less need for that dreaded chore of periodic dusting.
  
  Another significant benefit is the benefit to your heating and cooling equipment. With a central air system costing thousands and thousands of dollars, this is not a small benefit! These high efficiency filters do a fine job of keeping dirt and dust out of the blower housing in your HVAC system. The traditional fiberglass filters (those cheap blue filters) keep small animals and yard waste from entering into your HVAC, but little else. Ever look at a 20-year-old blower housing? Usually they're caked with lots and lots of fine dust. In addition to being gross, that can't be good for an electrical appliance.
  
  I highly recommend these Filtrete filters and I change mine more often than the manufacturer's 90-day recommended interval. And I think they're worth every penny of their hefty price tag....more info