CleanAirKits - Exhalaron
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Reddit Reviews:
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Last updated: Jan 3, 2026 Scoring
Liked most:
183
16
"Last year there were wildfires nearby and the airmega kicked itself into high gear (I keep it on auto), so I do really trust that it’s actually doing something."
"We’ve also had terrible Smokey days from the Canadian wildfires in my area and when I last replaced my filter, it was almost black so it was working hard!"
"My family has been breathing easier, especially during allergy season"
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0
"PC fans and Box fans are made by dozens of different brands and can be purchased anywhere - Walmart, Amazon, Home Depot etc. ... HVAC filters are cheap, efficient, and abundant. ... These purifiers do not lock you into one brand and all parts are user replaceable. ... Since the whole system is made from replaceable parts, you won't ever have to throw it all away just because a model got discontinued or a brand went out of business."
"these filters are easy to get preordered to my local home improvement store."
"the filters will be cheaper because they're standard filters you can buy at any hardware store instead of proprietary filters you can only buy from one company ... by design CR boxes are super easy to maintain"
96
29
"The cats are finally not terrified of it ... I can set it to quiet mode where it is barely audible ... Even quiet mode picks everything up just fine."
"Noise on the 3i is next to zero."
"another plus for Alen is that they are insanely quiet. I have a 45i and 75i and they are excellent."
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"Efficiency - because the filters are more efficient, it requires less energy to pull air through them. ... PC fans use DC motors, which use 1/10 of the energy and are much quieter than AC motors. ... They're also are engineered to be virtually silent. ... To get the same amount of air cleaning power one unit achieved with my winix 5200-2 I'd have to run it at turbo mode and it's just way too loud. Plus the corsi rose thal box built with pc fans pulled 8 watts vs the winix pulling about 60 at turbo. My electricity rates in CA are super expensive and it saves hundreds of dollars a year in energy and filter costs to go with a Corsi Rosenthal box."
"I am able to cool of my Appartement to a nice 23 C without too much effort and almost no noise, with actually a quite low power use. It’s genius!"
"Verbraucht rund 70 prozent weniger Strom"
7
0
"The box fan was $20 and the filters are $40 every couple of months. ... They're inexpensive"
"the filters only need to be changed every 6 months or so ... we can get them for cheap when they go on sale"
"they're cheaper and more efficient than commercial air filters"
Disliked most:
1
1
"you need to be able to build and rebuild them"
My air purifier is a [diy one](https://en.wikipedia.org/wiki/Corsi%E2%80%93Rosenthal_Box) out of a box fan and merv 13 filters. So I'm just adding a smart plug to it. You could just get a dumb one with a smart plug? might be cheaper
r/homeassistant • Best Home Assistant Smart Air Purifiers? ->I have several air purifiers and my favourite is a PC fan air purifier from North Box. There are various ones on the market but [North Box is Canadian](https://aidankepo.wixsite.com/northboxsystems). It's available directly from their site or through [Donate A Mask](https://shop.evidencebased.ca/collections/cr-boxes-air-purification). What's nice about PC fan air purifiers is that they're really quiet, quite effective and don't rely on proprietary air filters.
r/ottawa • Please try to protect yourself from the smoky air ->As u/ZedZabeth mentioned, making a Corsi Rosenthal box is a good idea. If you can afford it, a PC fan air purifier uses very little energy, is quiet and takes up less space than a classic CR box. If money is really tight, a respirator mask is probably the easiest, most accessible and cheapest solution. I know the prospect of masking at home is unappealing, but even masking from time to time indoors will lower your exposure.
r/ottawa • Please try to protect yourself from the smoky air ->My wife built two of these for our house. She despises dust. They work pretty well.
r/garageporn • Air Filtration For the Shop Corsi-Rosenthal box 10/10 ->One is in the front door foyer to blow up the stairs. The other is in the living room. We have a dog that sheds a lot and that's where he spends much of his day.
r/garageporn • Air Filtration For the Shop Corsi-Rosenthal box 10/10 ->Look up corsi-rosenthal boxes. I just built one last week and I'm way happier with it than my levoit.
r/AirPurifiers • I’m lost ->Corsi-Rosenthal boxes are what they're called! I have a lot of allergies and I use one of those. They're great.
r/CleaningTips • How are we freshening the air in our homes? ->Corsi-Rosenthal box. Many people love them on this sub, if done right. They’re great! Although I believe you’ll want a MERV-13 at a minimum. :)
r/AirPurifiers • Just basic a** air purifier ->100% for smoke, dust and allergies. We use cleanairkits, best performance for the price
r/Sacramento • How many of us use air purifiers in the home? ->Cleanairkits is the most efficient and effective filter I have found
r/AirPurifiers • Best air purifier for dust and pets? ->This is true. Web-search for a "Corsi-Rosenthal box." Actually more effective than most commercial air purifiers because it moves much more air. It's simply several MIRV-13 furnace filters taped to a cheap fan.
r/AirPurifiers • Just tell me what air purifier to buy! ->OP, I’m copy-pasting this from a previous comment of mine. FYI: Jim Rosenthal developed and provided testing data for what he calls a “mini mini” Corsi -Rosenthal box. He came up with it for his rideshare-driving nephew. I made one for use when I was in a carpool and have purchased those and many other filters from him. Because it uses pc fans w/ USB connections, it can be plugged into your car’s USB port or powered by a basic charger. Here - https://www.texairfilters.com/enjoy-clean-air-while-you-drive-with-the-mini-mini-corsi-rosenthal-box/ ETA: There’s another one he calls the “mini” but it’s sized for a bedroom. Search his “Articles” tab for different versions w/ different fans. Here’s one with pc fans - https://www.texairfilters.com/a-mini-corsi-rosenthal-box-version-2/
r/AirPurifiers • Car air purifier recommendations ->Corsi-Rosenthal box. You can make one yourself, or buy the kits. The ones with computer fans are wood or metal and will last forever, and because it uses MERV-13 furnace fans you only have to replace them every few years.
r/BuyItForLife • The Best Air Purifier for Home now? Have you noticed a huge difference since you started using them? ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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