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51 of 54 people found the following review helpful
on May 22, 2012
There seems to be a lot of confusion with Activated carbon filters. I'll give the pro's and con's to both. DON'T buy the cheaper generics, you'll be sorry. There's two types, depending on your main concern. Smokers will definitely want the SECOND style, HRF-AP1 (A-Filter), NOT this, the HRF-APP1 (A-Plus Filter)

These are made with Activated Carbon made with Zeolite/Volcanic Rock....HRF-APP1 (A-Plus Filter)

Pro's
1 - Excellent for chemical fumes and odors (VOCs)

2 - Good for kitchen odors

3 - Good for pet odors

4 - Good for new car smells

5 - Can be re-activated and then re-used. Just Vacuum and then place in the sun for a day

Con's

1 - Hard to find in it's pure form

2 - Not available for most air purifiers

====================================================================

These are made with Activated Coal Carbon. Carbon made from COAL is the air purifier best odor absorber and smokers BEST friend.

Pro's
1 - Excellent for smoke of any kind

2 - Great for kitchen odors

3 - Great for pet odors

4 - Good for chemical fumes and odors

Con's

1 - Has to be replaced periodically. (3 Months on average)

2 - Most carbon filters are overpriced

Carbon made from COAL is the air purifier best odor absorber.

Honeywell Universal Carbon Air Purifier Replacement Pre-Filter, HRF-AP1 / Filter (A)

Don't pay attention to other reviewers, they don't know what they're talking about. Just make certain you're buying Honeywell.
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22 of 26 people found the following review helpful
on June 11, 2013
I do not recommend Honeywell brand HRF-AP1, HRF-APP1 or 38002 because :

(1) Prefilters HRF-AP1, HRF-APP1 or 38002 (all made in Mexico) are thinner and much lower quality than the original prefilter that comes with the air purifier or the generic ones made in US, Korea or China that I bought before. 38002 is basically the same quality, thickness and porosity as HRF-AP1 except for the higher price. I suspect HRF-AP1 and 38002 are the same exact items with a different box and price.

(2) The pores or holes are bigger, many 3 mm or bigger. They allow many air particles to bypass the prefilter and clog up the more expensive HEPA filter faster. The 50250 air purifier needs 3 HRF-F1 HEPA filters at $29 each, for a total of $87.

You can clearly see many big holes by holding the prefilter against the light. Fine black carbon dusts from the prefilter cover my hands and table.

(3) Prefilter HRF-APP1 ( suggested retail $ 17.99) has zeolite added.

(4) You get a better deal by buying prefilters from generic suppliers. Search "HRF-AP1" on google. The generic filters I have bought are less expensive, thicker and have much less loose black carbon dusts than ones from Kaz and Honeywell. Plus you get 2 filters for Honeywell 50250 instead of 1.

Important information :
The Honeywell air purifier division was sold to Kaz, which continues to use the "Honeywell" brand. When Lenovo bought IBM personal computer division, it continues to use the "IBM" brand for a few years.

It takes time to research these information. Please click "Yes" below this line if this review was helpful to you.
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8 of 8 people found the following review helpful
on February 10, 2013
Verified Purchase
I keep a Honeywell filter in my bedroom to help control allergens. I normally use HRF-AP1 pre-filters, which work fairly well. I tried these HRF-APP1 for cooking odors (which they eliminate fairly well over a bit of time), but was especially pleased that I don't wake up smelling the cat box in the master bath if I forget to clean it the night before.
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14 of 16 people found the following review helpful
on September 30, 2011
Verified Purchase
This pre-filter made me very pleased. Thank you. I used my old pre-filter as a template to cut the new one. The new one wasn't lacking quality at all, same thickness. It came in the Honeywell packaging that was pictured and included the cutting guide to cut your pre-filter to the required size.
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6 of 6 people found the following review helpful
Verified Purchase
I so appreciated the fact that no scissors were necessary to create the right size for my Honeywell filter. It is pre-cut in strips that are easy to tear...great quality even though slightly more pricey than others because it can handle odors more efficiently. I will continue to buy this type in the future.
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24 of 32 people found the following review helpful
on January 19, 2013
Verified Purchase
The 'zeolite carbon' filter simply has powdered zeolite on it. While zeolite is used orally for various medical purposes, and in purifiers of various sorts, it is toxic to inhale. The hapless customer will open this package and following the installation instructions, thus likely getting zeolite powder on the hands. From there to the nose and lungs is a short distance! Not a smart idea for a product sold to people who are conserned with air quality, presumably for the health of their lungs!

I quote from the Mesothelioma Cancer Alliance: "...exposure to zeolite dust is associated with an increased risk for developing malignant mesothelioma".

[...]
Me, I don't even want to think about "benign" meothelioma.

Sure, I have been called a hypochondriac. I have even diagnosed myself to be one! However, the health risks of inhaled zeolite does not depend on my character - it depends on scientific research. Read up on this and make up your own mind.

Honeywell makes a version of this filter without zeolite (or hopefully any other helpful additives). That is what I had been using for several decades.
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6 of 7 people found the following review helpful
on August 27, 2012
Verified Purchase
Purchased this for the activated filter to front end the HEPA filter. It is quite expensive and replaced a cheap $3.00 filter. The cheap filter worked well. I could not discern any advantage for the more expensive filter, even though te specs are much better. Possibly my air does not need much cleaning
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2 of 2 people found the following review helpful
on October 9, 2012
Verified Purchase
You're supposed to replace these every three months. Honestly, I don't think the odor absorption part of it lasts quite that long in my house - but we have two cats and a dog. So for average households that probably stands true, if not longer. We have to replace ours about every two and a half months. When these are fresh, though, man do they work. I walked into the house, which happens to be by the dog's pen, and it smelled so fresh. I was amazed. I like our air purifier (Honeywell 50250) and I would much rather this replacement filter(A Plus) over the regular A filter - need that extra odor absorption. We also have all wood flooring, save for the kitchen and bathrooms. The floors are from 1959 so you can imagine that in the humid summers, despite the AC, sometimes those like to smell like an old house. This definitely helps with that.

One more note, these are scored. Look very closely. It can be difficult to see them. Hold it up to the light and that may help you. You'll still need scissors for the stubborn spots, but it's a nice feature.
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8 of 11 people found the following review helpful
on September 1, 2012
Verified Purchase
These are absurd prices for what amounts to a "universal charcoal filter". They are not even scored and must be cut to the proper size! With Honeywell it seems obvious that prices are headed upwards - way up - as quality heads downwards. This filter also is not as effective at removing odors as the one that originally came with my expensive Honeywell air cleaner. In retrospect I would simply buy a universal charcoal pre-filter for half the price elsewhere.
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1 of 1 people found the following review helpful
on October 16, 2013
Verified Purchase
I don't know enough about the filters to know about the quality of these, but the initial "new-filter" odor was gone after a day or so. It works well, but not as well as the original pre-filter that came with my 50150-N.

My only major beef about this is that there is no way I can be certain these are official Honeywell filters and not an off-brand. These are bulk filters, came in a clear plastic bag and were labeled "replacement pre-filter for Honeywell air purifier." The reason why I purchased these was because based on reviews and a little research I didn't want to take my chances on a generic pre-filter. The product image and description shows (and I expected) the Honeywell packaging and information, which I didn't get. In addition, the image displays the "A PLUS" filter and the item title only lists "A." The reason I believe this is a generic filter instead of the branded one is that the rating was not indicated anywhere on the packaging. This could be an "A" or an "A PLUS", but could also be "B-" or "Z" rated for all I know. I don't mind bulk packaging, but that's not what I bought.

The quality is good for my needs, which is the 3 stars. However in the future I will spend the extra money to make certain I get what I paid for.
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