Blueair - DustMagnet 5210i
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Reddit Reviews:
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Last updated: Dec 8, 2025 Scoring
Liked most:
11
0
"the only ones whose fans have stayed smooth and quiet. ... i have owned 8 over 5-6 years at least without one single issue."
"the BlueAirs are the only ones whose fans have stayed smooth and quiet."
"Dead silent on the first setting"
14
0
"it’s majorly helped w allergies and dog smell"
"it's fantastic in keeping the farm smell to a minimum."
"I personally have 2 blueair they work great I have 2 cats and my thanksgiving guests couldn’t smell them or their litterbox at all!"
5
0
"They're incredible and the best thing is that they have this washable cloth sleeve (pre filter) that goes over the entire intake which happens to wrap all the way around. ... It does such a good job that the actual internal filter stays significantly cleaner and doesn't need to be cleaned or changed as often. ... It's a game changer."
"Blueair imo because they have washable prefilters, and pet hair and dander is large and honestly doesn't need HEPA filters to clear it out the way, say, smoke does."
"The outer pre-filters do put up a lot of dust and I can throw them in the wash."
28
0
"it’s majorly helped w allergies and dog smell"
"I have terrible allergies and use Blue Air on every level. Works amazing."
"We are a household full of asthmatics with allergies. We have 4 BlueAir purifiers and I cannot recommend them enough."
9
1
"the only ones whose fans have stayed smooth and quiet. ... i have owned 8 over 5-6 years at least without one single issue."
"have had mine for years and run it 24x7"
"I’ve had two BlueAir for five years now. Love them."
Disliked most:
0
1
"the auto setting barely did anything unless I literally blew smoke at them"
"Their sensors suck"
2
3
"the larger sizes have significantly more expensive filters"
"Those filters are crazy expensive, so that purchase turned into quite the "investment"."
"BlueAir is ok but the filters are small and replace more often."
0
1
"I don’t like they have an ionizer that you can’t disable. ... Ionizers create ozone, and when ozone reacts with different molecules it creates all kinds of new compounds that can’t be predicted."
2
4
"OTOH, the two Blueair purifiers are on all the time and we have ***not*** noticed a decrease in the rate at which dust accumulates on the woodwork in the house."
"the auto setting barely did anything unless I literally blew smoke at them"
"Maalikabok pa rin kahit super sealed yung unit."
2
2
"Blue air is the best of the three, also isn’t HEPA but has a static generator which bothers some people."
"Although you'll find complaints it doesn't use a "real" HEPA filter"
"Blue air is the best of the three, also isn’t HEPA but has a static generator which bothers some people."
I believe there is ozone generation with the Blueair. But it’s CARB certified so must be under 50 PPB. You can decide if that’s within your acceptable level or now. Many here prefer mechanical purifiers. Coway is a good brand but IIRC the AP-1008CH is no longer being produced. Coway, Winix, Filtrete or Alen are often recommended mechanical filters. Alen is worth checking out. Their filters seem to have a longer lifespan and if you buy only their filters (subscription every year) you get a lifetime warranty.
r/AirPurifiers • Need dust Air purifier. Recomendations? Coway? ->Personally, yes I’d return the Blueair if you can. I prefer mechanical. You won’t be disappointed with the airmega!
r/AirPurifiers • Need dust Air purifier. Recomendations? Coway? ->Yes IMO the airmega would be better for your room size. The CADR and ACH for dust on the airmega is double that of the Blueair. (284cfm vs 133cfm). Honestly the Blueair is slightly underpowered for your room, but the airmega is slightly overpowered for your room. When it comes to airpurifiers always go with overpowered!
r/AirPurifiers • Need dust Air purifier. Recomendations? Coway? ->We run 3 in our house, one in the main living area (diy pc fan with hvac filters), and one in each bedroom (blue air brand or something, I think). Also consider plastic on leaky windows (cheap sliders).
r/saskatoon • Air purifier ->I have a few Levoit the same size as this one. I don’t really care for them compared to the Winix and Blue Air ones I have.
r/AirPurifiers • Is this worth the money ? ->Love mine too. We got 3 and they’re holding up better than the Blue Air’s I got.
r/HomeKit • Best HomeKit air purifier? ->I have terrible allergies and use Blue Air on every level. Works amazing.
r/BuyItForLife • The Best Air Purifiers? ->You say costs don't matter, but what does that mean? There are devices for thousands of dollars out there, and you'd need multiple in a home. My general suggestion is to find a balance between *total cost* (initial, plus ongoing filters, plus electricity) so you can maximize the benefit and not feel pinched. Wirecutter previously did some studies on total costs - you can try to find them online, but it's been some years. If you really have no cost, just get the largest air purifier you can fit for each room and run it at the highest speed. Your home may feel like a wind tunnel, and that means it's working. For most people, Blue Air is a good balance in these various aspects. They are affordable up front, filters from the OEM aren't too bad (and generics are available on Amazon), and they have an outer washable filter (so you don't waste the expensive inner one on say, pet hair, etc.). If it were me, I'd get a large one for the room I sleep in, and at least one or two others. Ignore any automatic sensor based setting they offer. At night, or when you're in the room, you want it on the highest setting possible, and during the day, turn it down just one notch. You want the air flow to circulate and air to essentially be "scrubbed" by the filters. Remember this is only a secondary or tertiary method of cleaning in terms of priorities. Your best bang for your buck is washing your bedding weekly (including the comforter) in unscented detergent, vacuuming or sweeping, and having good airflow in your home to prevent dust and mold build up (leave bathroom and closet doors open). Use your A/C generously to keep humidity levels down in the humid months and for the sake of your sinuses, use a humidifier in the dry cold winter months if your climate has them.
r/Allergies • Whats the best hepa filter air purifier? ->BluAir (Swedish) is what we used in the middle east.
r/BuyCanadian • Canadian-made or Non-American Air purifier? ->I have a Blue Air and it works great. It definitely cut down on the dust in our bedroom. My kids have the Levoit purifiers in their college apartments. They must work because one daughter just asked if she could order some new filters because hers is dirty. The other said that something smells awful in the main room (that she shares with roommates), but she can’t smell anything in her room.
r/CleaningTips • What air purifier do you swear by? Trying to cut through the hype. ->We have multiple Blue Air and a Coway. Happy with all of them. Frequently available on sale.
r/BuyItForLife • The Best Air Purifiers? ->Second the Blue Air ones It’s been great to have going the last few weeks
r/CleaningTips • What air purifier do you swear by? Trying to cut through the hype. ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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