isinlive 2 Pack FLT4825 True HEPA Filter B Replacement with Activated Carbon Pre-Filters
Activated Carbon Pre Filters, Charcoal Activated Carbon Pre Filter, True Hepa Filter, Guardian Air Purifier, 1 Pack Flt4825 True Hepa Filter, Fresh Air Guardian Air Purifiers
Results of our analysis:
We analyzed 209,584 reviews for 162 products in the Air Filters category.
We then analyzed 186 reviews for this product. Of these, 16 reviews were recent.
Around 87% of reviews were positive and about 11% were negative.
Final Score:

9.19 out of 10, based on these factors:
What buyers say about isinlive 2 Pack FLT4825 True HEPA Filter B Replacement with Activated Carbon Pre-Filters
I have a lot of allergies in my house, so I could probably have three more of these running in my house.
I had to blow out the original pre-filter with compressed air for a long time to help the main filter do its job.
The fan is supposed to be changed more often than the HEPA, but I usually forget, so it is time to change the filter.
After 2 months of use, everything seems to be working correctly, even though it takes a little bit to insert it into position, and I did not receive any error/warnings about air flow restriction that some users reported.
The replacement filters are not cheap, but they work just as well as the original and are also super quiet.
Common Questions
What is the quality of prefilters?
The only difference is that the fit may be a little tighter but they still fit and you can close the back plastic piece on it.
Do these hepa have a smell?
Even when first unpackaged. The smell of clean air after a new filter is all I can smell.
The red led replaced filters, but they still blink.
Try holding the power button a few seconds to see if it works, it may be a reset.
Please help by asking how the filters are shipped and packaged, are they wrapped in plastic or just loose in the box?
The individual box with the two filters and two over filter pads can be cleaned and vacuumed to extend the life of the HEPA filter.
Does this fit the germ guardian ac4825dxl?
Yes, that is the model we have. It is amazing how the black filter turns white with dust, pollen etc.