6 of 6 people found the following review helpful.
not a HEPA filter, name deceptive
By Andrey G. revyakin
This is not a HEPA filter, since it does not meet HEPA standards in terms of particle filtration efficiency. Putting "HEPA" in the name is deceptive, and allows to sell a cheap item for several times the price.
I got this to test the filter media to see if it can be used for a true HEPA application in an electronics room. We have tested this filter at 60 CFM using an APC plus particle counter and got the following readings (presented as counts in the 0.3, 0.5, 1.0, and 5.0 micron ranges). Numbers are accurate to within 10%.
Ambient air:
20565, 1125, 254, 0
Hunter-Filtered air:
2102, 51, 32, 0
Positive control (true HEPA filter - we used a Whatman HEPA-CAP here to make sure the counter is accurate)
0, 0, 0, 0.
Thus, this filter is ~90% efficient - which should be enough for the most folks to achieve an allergy relief, but also could be achieved by a variety of much cheaper electrostatic filters rated above MERV10 one can get at HomeDepot.
The federal HEPA standard is 99.97% particle removal at 0.3 microns - and this filter is more than 2 orders of magnitude (factor of 100+) below this rating. The media appears to be polypropylene and has a surface area at least an order of magnitude smaller than a true HEPA filter - which is not surprising.
1 of 1 people found the following review helpful.
just as I expected
By ac charlotte
This was the cheapest place and one of the very few places to purchase the replacement filters. I have replaced the filters only once. they were pricey and I expected that when I realized I could not get them at the corner hardware store or bulk item store. I rated the filters with 3 stars for this reason only. The filters work fine.
0 of 0 people found the following review helpful.
Works Great
By Sherry Wilson
I have no complaints. This filter works great and I will be ordering more. The fast shipping was the icing on the cake.
Product Feature
- Aftermarket Hunter HEPAtech Replacement Filter Fits Hunter models 30027 and 30028.
- Filter 1 is a pre-filter that removes large dust particles, lint, and hair from the dirty air
- Filter 2 is the sub-micron filter that captures 99.7 % of all airbore particles as small as .1 microns from the air
- Filter 3 is the activated charcoal filter that absorbs and helps eliminate cooking odors, musty air, tobacco odors, and pet related odors as it freshens the air
Product Description
HEPAtech replacement filter fits model #30027
Product Detail
- Amazon Sales Rank: #33262 in Home
- Brand: Hunter Fan Company
- Model: 30917
- Released on: 2004-08-05
- Number of items: 1
- Dimensions: 1.70" h x4.50" w x11.70" l,.30 pounds
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