Review on 🌬️ DuraBasics 13 HEPA Filters for HPA300 Honeywell Air Purifier and HPA300 - 3 HEPA Filters & 4 Pre-Cut Activated Carbon Pre Filters - Replacements for Honeywell Filter R and HPA300 Filter by Dan Cramer

I have a couple of HPA 300 units that I use for general dust reduction. (I have IQ Air and Austin Air units with large carbon filters for the neighbor's fire extinguisher and fireplace.) These Durabasics filters weren't a perfect match, but they came pretty close. I could swear the air purifier's performance has dropped a bit, but I have no other way to measure it than to raise my hand over the unit and see where I can feel the airflow. How well do HEPA filters work? People say they are amazing without even knowing it. The particles of most concern are too small to be seen. So unless you have a serious test instrument like Dylos, you won't be able to tell. Like any filter, it collects visible dust by letting in a lot of air, so they're certainly worth every penny. I like the fact that they are relatively cheap as I prefer to change them out when they are visibly dirty rather than trying to vacuum them which would not remove the smallest and most dangerous particles and even if it did, would dislodge them from the filter is the last thing you want to do.