3Pro

Agree on the 3 pro! It’s pretty good noise level wise

Glad to see this posted. It's the best one money can buy and it's not even close. I had one of mine die (it was one of the older models) and I was easily able to replace the fans + power supply and now it's working like new. Amazing product and repairable!

The AirFanta 3Pro also uses PC fans so it's quiet. The speed can be adjusted with a dial to a noise level you can tolerate. I have sensory sensitivities and I'm very happy with mine. It's got a high CADR at a low volume level. The 3Pro is $159 and can filter VOCs, but you'd have to buy the carbon filters separately. If you do buy it, be careful about purchasing through Amazon - there is a counterfeit version being sold currently. https://air-fanta.com/products/airfanta-3pro

I love the performance of that Airfanta. It just looks so ugly though

https://www.amazon.com/AirFanta-3Pro-collapsible-portable-suitcase/dp/B0D9D5L15F Basically a corsi-rosenthal that’s mentioned above without your having to get all the supplies yourself. You can pack it in your suitcase when you’re traveling as well. Had this in my hotel room when the wildfires hit LA in January and I was grateful. The owner is very communicative and will answer any questions you have as well. I’ve gone through a lot of air purifiers over the last 4-5 years and this one and the Dyson one are what I still use.

People hate when you suggest airfanta 3pro here for some reason but it's literally a portable corsi rosenthal box that specs higher than all the other ones contained in hard plastic at 2-3x the price.

Assuming 2,8 m height, to achieve 6 ACH (Air Changes per Hour) you should have a total of 1.000 m³/h. So if you got two of the AirFanta 3Pro units I [recommended downthread](/r/AirPurifiers/comments/1kn1skq/dust_allergy_and_affordable_air_purifiers_whats/msrou4m/) and ran them at a medium setting it should make a noticeable difference in dust. The IKEA units are simply way too small for the space. To start off, I would just try one unit in the bedroom.

For affordability and high airflow (which is what you need for dust), it's hard to beat the AirFanta 3Pro. https://www.amazon.nl/AirFanta-3Pro-luchtreiniger-supergroot-opvouwbaar/dp/B0CJTYWQBT The IKEA units are cheap, but they don't have high airflow (ie CADR). So the cleaning power will be low because the pollutants "leak in" too fast. -- |Filter|Cost|Airflow|Airflow per Euro|Noise| :--|:--|:--|:--|:--| |IKEA FÖRNUFTIG|€59,95+€11,98/yr|120 m³/h|2,002 m³/h/€|60 dBA| |IKEA UPPÅTVIND|€29,99+€7,98/yr|95 m³/h|3,168 m³/h/€|55 dBA| |AirFanta 3Pro|€159,99+€67,99/yr |730 m³/h|**4,563 m³/h/€** (best)|50,2 dBA| -- But again it's not really about the value for money. It's more that you *need* such high airflow to make a dent in dust levels, especially since in real life people run air purifiers on medium due to noise.

Air sealing is your best friend. I wrote a big list of easy tips for air sealing common leaks [here](/r/AirPurifiers/comments/1iy1fzn/bbq_restaurant_opening_up_across_the_street_from/meurxjl/). Use GE #2 zero-VOC caulk, and I also seal around the electrical outlet gaskets too (just put the cover back on while it's still wet so it still fits, and try not to glue it on either). This results in 100% sealed outlets and switches on exterior walls. Your builder should have done all this, but the easiest time to double check is now. You need roughly 1770 CFM to achieve the *minimum* of 5 air purifications per hour, so I have to recommend about **six** [CR boxes](https://cleanaircrew.org/box-fan-filters/) (use 3M 1900 20x25 or 20x30 from BJs online) and/or [AirFanta 3Pro](https://www.youtube.com/watch?v=IzxNaSP7c6I). Both of these units achieve about 300 CFM on a reasonably quiet fan speed that is actually usable. Try to run them 24/7, maybe turning the bedroom units lower to sleep. If you can crank them to High in unoccupied rooms that would be ideal. Use the CR boxes (which are huge and noisy) in rooms that have extra space and aren't occupied very much, and the AirFanta (which is a 1 foot cube and much quieter) in rooms that are frequently occupied and where you don't want a giant air cleaner cluttering up the space. I believe the best deal is still on their website with coupon code "housefresh." You probably also want some sort of VOC carbon filtration. The easiest option there is the 8" AC Infinity Cloudline Kit. Tuck it in a corner of the kitchen and replace the carbon with fresh AC Infinity bulk carbon when you start to smell odors again (typically 3-6 months). This has 20 pounds of carbon for much cheaper than the typical $600-1000 purifiers like Austin Air or Airpura or IQAir. Sorry, I'm sure I must be leaving something out, but please ask if you have any questions or just want clarification. Best wishes --- EDIT: other options to consider are the Winix 5510 (125 CFM, $200), Smart Air Blast Mini (270 CFM, $700), Coway AP-1512HH (125 CFM, $150) or Levoit Core 400S-P (135 CFM, $220). These are all quoted at a reasonably quiet level (sub-45 decibels), because real-world usage shows most people don't like living with a jet engine.

The AirFanta 3Pro uses E11 filters (95% interception efficiency at the MPPS), whereas HEPA is 99.95% or 99.97% interception efficiency at the MPPS, depending on the standard used (US or international). Previously E11 was called H11 and *was* considered a "HEPA filter," but that has since been changed. The inventor chose this filter because it maximizes the overall CADR, so switching to a HEPA filter would actually make the filtration worse. https://x.com/Engineer_Wong/status/1899144721710408038 --- EDIT: Yikes, big pile of misinformation linked by /u/Justifiers below. And a nice downvote too for my troubles, probably thinking (wrongly) that I downvoted them. To save people watching a rambling conspiracy video (skip to 6:20 on the second video if you want), the YouTuber's objection to CADR is the data only goes down to 0.5 microns and not smaller (untrue, PM0.5 by definition measures *all particles smaller than* 0.5 microns, and also misinformed because at that size electret filters get *better* interception efficiency as the particles get smaller) and one RTINGS.com video which appears to show CR boxes performing worse than HEPA filters with lower CADR (contradictory, because elsewhere in the videos he extensively blasts YouTuber tests as unreliable and amateurish). Save your time and brain cells. Tl;dr yes **CADR is still what really matters** and not HEPA.

At fan speed 2 the 150's performance falls to CADR = 78 CFM, so HouseFresh doesn't recommend it for room sizes larger than 117 square feet. https://www.youtube.com/watch?v=gJWJX-FMxeo I'm not sure why anyone would recommend the IKEA Vindstryka because it's just an air quality monitor, not an air purifier. I wouldn't recommend the IKEA Starkvind either, because its noise and performance is similar to what you already have. Returning the Coway and getting an Airfanta 3pro might be a good option. I'm not sure about Auto mode on your Coway, but I would expect that ramping up when it detects particles and then ramping down when the air is cleaner so it's quiet most of the time is exactly what you would want? Take care.

Obligatory recommendation for the AirFanta 3Pro. One of the best CADR-per-dollar and CADR-per-decibel options out there, and it doesn't have an ionizer which is bad for birds.

Smoke is tiny *particles* of carbon and oils. If you're getting second-hand THC ("hotboxing" effect), it's the particles not the VOCs. You just need lots of particulate filtering CADR. Try getting an AirFanta 3Pro and setting it on 70% all the time. You might still smell it occasionally, but it shouldn't cause any psychoactive effects. Also, incense and candles and sprays are really bad for your health (almost comparable to cigarettes). https://dynomight.net/air/ --- EDIT: to the one who downvoted, please provide evidence of only cannabis VOCs causing second-hand intoxication. If I'm wrong I wanna know it, and I'll gladly fix it.

Oddly people forget "perfect is the enemy of good." 5500-2 or AirFanta 3Pro will be a massive step from nothing at all. If an open window isn't an option, exhale directly into the intake for maximum effect. Toke on buddy

AirFanta 3Pro, or just buy the filters and print up your own DIY [AirPhantom](/r/crboxes/comments/1oqinjr/3d_print_cr_box_for_airfanta_3pro_filters/) (I recommend PureWings 3 High Speed for the PC fans). Good CADR-per-decibel and CADR-per-euro, and it has infinitely variable fan speed.

Always a fan of the AirFanta 3Pro. Good for pulling out particles at low cost and low noise.

AirFanta 3Pro. As soon as you said "budget not a huge concern" the usual Medify / Alen / random $800 purifier sharks began circling, but for quiet yet powerful particle filtration it's hard to beat the 3Pro. https://housefresh.com/airfanta-3pro-review/

DIY CR box or AirFants 3Pro. You need a lot of airflow to do anything at all about dust, and these are the most economical options. For the CR box use 3M 1900 filters, four 20x25x1 or 20x30x1, get whatever's cheapest per square inch. BJs online usually has a good deal. Use the Airfanta if electricity prices are high in your area, because it uses a lot less energy. Cheapest price is on their website with code HOUSEFRESH, it should come to $152. Don't bother with the carbon version since it has lower particle performance and the carbon gets smelly long before the particle filter reaches end-of-life. https://cleanaircrew.org/box-fan-filters/ https://www.youtube.com/watch?v=IzxNaSP7c6I EDIT: ahh, I see you are in Italy? The Airfanta is probably the best option then, since in most of Europe 3M filters are only available through Digikey for higher unit prices, and generic substitutes tend to have many fewer pleats resulting in 2-3x smaller area of actual filter material. Instead of MERV 13 you might consider a CR box with the (European equivalent) M6 or F7 grade filters.