Breathe Naturally Universal Cut To Fit Activated Carbon Air Filter - Replacement Charcoal Air Filters - Carbon Filter Sheet for Air Purifier, Vent Filters & More - Made in USA (Pack of 2, 16x48)

I have an LG high efficiency window A/C. It has a washable filter over the evaporator coils and an electronic reminder to tell us when the filter should be cleaned. All well and good, EXCEPT that the filter is thin and cheaply made. It doesn't prevent a fairly rapid buildup of gunk on the internal evaporator coil, the fan, and the internal ductwork. Once all those components have a layer of dust and gunk all over them, the heat exchange suffers from the insular properties of the crud on the coils and the airflow is further reduced by the build-up on the fan. In short, the efficiency I paid extra for is lost until the unit is uninstalled, deep cleaned and put back in the window. What a pain!Breathe Naturally cut-to-fit filter material and some adhesive Velcro strips solved the problem almost completely. I put the Velcro "hook" half of the adhesive Velcro kit around the perimeter of the evaporator coil intake and some more around the two side and one bottom air intake vents molded into the case. (Search Amazon for adhesive velcro and you'll find what you need.) Then I installed Breathe Naturally filter material over all of these places - using the velcro to hold the Breathe Naturally material in place and make a good seal around the edges. The 1st set of Breathe Naturally filters over the intake vents pre-filter the air. The 2nd filter over the condenser coil inside the hinged front cover provide a secondary filtration stage. Lastly, the A/C's flimsy little factory filter - sitting between the cut-to-fit filter and the condenser - gets a third chance to stop particulates. In addition, the carbon in the Breathe Naturally filter material also does a great job of keeping the air coming out of the A/C smelling fresh and clean.I replace the Breathe Naturally materials about once every three months - and vacuum the surface dust off of them each time the "clean the built in filter" reminder light comes on. I also wash the factory filter at that time. I really love the performance and lack of odor and have yet to notice any visible buildup of crud on the A/C internals. Now I always have the high efficiency performance I paid extra for!All you need for this project is a measuring tape or ruler and a pair of scissors. A very easy and very effective DIY enhancement!

Trying to control the musty odor from the crawl space until we can FIX the problem. This is working very well. It is easy to cut to fit the vents. It has helped more than I thought. Dust is less of a problem. For the price it has been worth the effort.

This is my second month using this filter. They work really well in my air vents. I live where there are a lot of particles in the air and these filter out all of that from entering my house.

I have been using these filters for years. The last three orders the manufacturer has made them thicker ....I love this new version ! Really have noticed better smell and lasting longer. Oh with some scissor work I can make 2 changes as a pre filter for a 24" x 30 air intake..

Nice material! Price is good too

Works great for fridge filters, ROI was exactly one expensive filter replacement and now I have enough for 4 years of filters... replacing these twice as often keeps everything smelling pretty fresh.

I needed these because we live in a downstairs apartment and share vents with cigarette smokers. If you don’t smoke then you know how bad it can smell and they start smoking at 5am. I took the vents down and cut the filter to size and just put them back up. There’s plenty left to change them out in 3 months.Results: they kinda work. I still smell the awful cigarettes through the vents but it’s not as powerful as it is without them . There’s plenty of air flow out of the filter but I’m slightly disappointed there is still a smell.

I am currently using these filters for my soldering station. So far, it definitely seems like it is working and filtering out the fumes with a MERV 8 filter behind it.The quality also seems on par with what came with my Winix air filters, so I may also try these filters in there when I need to do a swap. It is easy enough to cut these to any size needed.