2 Sets Replacement Air400 Filter for Bissell Air400 air purifier, HEPA Activated Carbon Pack 3365, Include 2521 True Hepa Filters and Pre-Filters, 2520 Active Carbon Filters

Perfect!!

If you’re looking for quality replacement filters for your bissel air400, these are the ones.They fit great and the carbon content is awesome. It gets rid of any smells inside my home. You can tell the hepa filter catches a lot as well by seeing how dirty it looks after a few months compared to a new filter.In my home, the carbon filter seems to last about 3 months or so before I notice it may be saturated. You can tell by smelling the air coming out of the purifier. If it smells like it has a slight burnt toast smell, the carbon is saturated. Swap it out and smell again and you’ll immediately notice the new fresh smelling air again.

Excellent replacements

At the time of this review, this filter set is priced slightly less than the non-brand name filters I have been using. I can't do a direct Bissell Brand comparison, because it has been a long time, but from what I recall, the brand I use is comparable.The hepa filter material from this set seems comparable, but the boarder/framing is less rigid, so filter seems cheaper. An obvious difference is the carbon filter. This filter set has solid pellets that sit in the bottom of the cells. My other filter has smaller pieces that stick to the edges throughout the cell giving better exposure to the air passing through which should make it more effective. The construction of the filter and the volume of carbon seems the same, so as a practical matter, I'm not convinced that as a user you'd notice a difference.The 6 pack of pre-filters with this set is a is a plus, given my usual brand only supplies one. (Tip, when you clean the sensor on the unit, vacuum the pre-filter to extend the life, but it is still nice to have extras.)Going 4 stars. They are not the highest quality available, but If you are shopping for replacement filters, I'd rate these worth it to try them as an economy option.

Upon installing, it appears to be very similar to OEM. Can't speak on the filter quality yet. Something that stood out (whether it's good or bad), is the carbon filter is much thicker as seen in photo. The unit cover still closes and operates fine.

3rd time to purchase. Ideal and effective.

Smells clean carbon filter is 2x thicker and closes better the original the hepa filter looks just as good seals good 4x pre filters i will buy again i have to check if they sell other air filters

I brought this product for my Air400 purifier for the second time and it fits and works perfectly. It keeps the air clean and fresh. Great product!