Box Fan Hepa Filter Reddit

Hepa air purifier aeramax 300 set at 2 feet from particle counter.

Box fan hepa filter reddit.

The box fan is gonna be pretty shitty at generating the pressure delta you need to pull air through the filter theres just way too much slippage around the vanes. No pedants here yet so i ll say it. Further testing needs to be done with higher merv ratings and over longer periods of time. So it must be working.

Right now i have a small box fan that i have taped a furnace filter to the back. My top two tips are to put the filter on the intake side and then you don t need to secure it to the fan. Fan 20 x 20 box fan any model and manufacturer filters depends on your needs and research findings. The fan does sound like it s a bit under strain.

Merv 13 box fan set up at 2 feet from particle counter. Yes hepa will provide more filtration but if cost is an issue than the diy merv 13 box fan is a sensible choice. The filters sell for about 15. This article is based on the 3m merv 12 20 x 20 pleated filter and the web absorber cut to fit 20 x 25 filter.

These can be hard to find quickly with the conditions however. Also i use a cheaper filter on the outside of that to make the more expensive filter last longer. The suction from the fan should also make the filter stick to. I need to replace both filters now because it s amazing how dirty and gross they are.

The fan is also very loud i don t know if quieter box fans exist or if i should attempt to modify this to work with a circular vornado type fan i have one on hand that is much much quieter and seems to push more air. You re cleaning the same amount of air per minute the fan still pulls the same volume of air through it but the filters should last 4x as long. By the time you buy the correct fan and get the sealing figured out you might as well have spent the 300. My hepa filter companion cube box fan now cleans 4x the surface area.

I taped a 20 by 20 inch honeywell fpr 9 filter to a lasko 20 inch box fan and ran that combo through our standard 35 minute five match test in our 200 square foot new york test space with the. But a quick solution as posted by the university of michigan s medical center is to create your own filter using a box fan and a standard hepa filter both readily available in most hardware stores and costing about 25 for everything. Start off by unpacking the fan and making sure that it works.