Better than aftermarket filters, for not much more money
I have an older Whispure 510 air purifier and I've used both aftermarket filters, sold via Filters-now through Amazon, as well as this filter, which is a Whirlpool branded filter. The aftermarket filters are certainly cheaper, by approximately $20, and seem to work fine, but are of significantly inferior construction. This filter has a sturdy plastic frame with a caulked edge, rather than a cardboard frame with no caulking. The filter media in the Whirlpool filter is also much stiffer than the aftermarket media and does not flex when installing the filter.
Does this ultimately matter? I suppose the true test would be to use some sort of complicated particle counter to test filter efficiency, but absent that, I can say that the additional $18 does seem to provide a better product. Air filters provide, among other things, piece of mind, and the sturdier construction factors into that. One final comment: the aftermarket carbon prefilters are fine - no need to spend additional...
Great HEPA Filter for a Great Air Purifier
I am allergic to pretty much everything that floats around in the air, so I rely heavily on my Whirlpool 450 Whispure Air Purifier to keep me breathing easy. It's hard to separate the function of this HEPA filter from the air purifier itself, but the filter must be doing a good job because I sleep better than I have in ages with it cleaning the air in my room 24 hours a day. True, this HEPA filter is a little pricey, but when you consider that you only have to change it once a year it comes out to a bargain at $6.58 a month! And I definitely recommend buying this HEPA filter on Amazon since you'll pay at least $99 for it anywhere else.
Whirlpool HEPA Filter
This is an original Whirlpool HEPA filter. Others on the market are not, and are made of lower quality materials. Price was the major factor in purchasing this filter, about $20 cheaper than I could find it locally. Great filter at a great price.
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