
Blueair - Classic 605
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Based on 1 year's data from Feb 24, 2026 How it works
Liked most:
25
0
"it’s majorly helped w allergies and dog smell"
"HEPASilent tech is real — gets dust, mold, pollen, pet funk, all of it"
"has substantially lessened my seasonal allergy symptoms while in the house"
23
0
"it’s majorly helped w allergies and dog smell"
"HEPASilent tech is real — gets dust, mold, pollen, pet funk, all of it"
"has substantially lessened my seasonal allergy symptoms while in the house"
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."
"Blue air. The prefilter is washable."
10
0
"Our favorite is the BlueAir in our bedroom - we keep it on auto mode 24/7. It’s super quiet and seems to work well."
"the BlueAirs are the only ones whose fans have stayed smooth and quiet."
"Dead silent on the first setting"
6
1
"have had mine for years and run it 24x7"
"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."
Disliked most:
3
2
"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."
"Maalikabok pa rin kahit super sealed yung unit."
1
4
"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."
0
1
"the auto setting barely did anything unless I literally blew smoke at them"
"Their sensors suck"
BlueAir. I have both the ones that use fabric as a pre-filter, and the old classic Model 600 ones that were on sale hundreds off. Check their website for sales. With the fabric ones, you simply slip off the fabric and wash in the washing machine.
I have one and think it is worth $50. I got it at Blueair and it was on sale for $300 or so off. It's a very expensive air purifier and three filters are need. If you want odor control, too, you must get the [Classic 500/600 Series DualProtection Filter](https://www.blueair.com/products/500-600-series-dualprotection), as opposed to the filters that just clean the room. They range from $120-150 for three, depending on where you buy them online. The Blueair website even has a subscription plan where you get a discount for subscribing. I'm using it in a foyer which is connected to a living room and dining room, and it works fine. The foyer is right off the breakfast nook and kitchen, and it does an excellent job eliminating cooking smells that drift into the foyer and can travel upstairs. The first two speeds are quiet, but the third highest speed is very, very loud. I also have the Blueair 211+ and 211 Auto in other rooms and really like them, too. If I need air purifiers in the future, I will always buy Blueair.
I have the Blueair 211 and Classic 605. Both are great air purifiers and make great noise on high, but they appear to be older models, so may not be easy to find. If you end up buying an air purifier that is too quiet, consider also getting LectroFan Classic White Noise Machine. It has lots of fan sound choices and is the only sound machine I have ever used that is loud enough for me.
Multi level approach works well. - Decent filter you change more regularly for your HVAC (agree with others that MERV shouldn't be too high) - Clean floors, if you have carpet get a deep carpet cleaning annually - Room air filters. I've had luck with Blue Air. Have one jig one for living room and some small ones for the bedrooms. - Have you tried using regular saline rinses for your nose? I use the powder saline mixes with the plastic applicator from NeilMed, but there are others out there. While my allergies are pretty mild, I haven't needed to take any allergy medicine at all since using these.
Used purifiers can be a good deal, but a new filter for this model is well over $100 so your cost of ownership is going to be expensive going forward. Need to make sure you’re ok with those costs BlueAir has almost exclusively switched to circular filters, so there’s always a chance they will stop producing replacement filters for this model at some point. Also, purifiers are not designed to eliminate odors even though they market them that way. They can help, but it’s not going to make a huge difference. Also you have a very large space at 800sq ft, so you will most likely need multiple units to properly clean your air
I love my Blueair. It’s either a 500 or 600 model and I usually get the smoke filters because they have carbon in them and it helps with pet odors. I really like it.
In practice they all work fine, usually getting more units is better than getting a higher end one. In my opinion: The best air filters are installed into a new air system such as Daikin, that allows net positive pressure to be inside as it pulls filtered air outside, preventing a leaky home from pollutants entering. But given it needs to pull outside air to get positive pressure inside, it can bring other pollutants unless you get the more expensive charcoal based filters. Most folks don’t have this unless they remodel their homes or it came with it. The second best I prefer is the largest blue air with their charcoal based smoke stop filter that can help clean up VOCs. They have good airflow with low sound, and their filters are quite effective at removing pollutants.
I have a giant blue air and I love it. Before we didn't have one in a smaller space and I feel some days I was dying. The cost of the filters is kind of pricy though.
Blueair has a small one that would fit that space for $99 on Amzn or other retailers. I have next size up and so far so good and noticeable decrease in dust. I like being able to control it and monitor its cleaning via the app. Not advocating for the company other than after doing some research I settled on them and so far am happy.
I have a Blueair for small room and can really sense a difference. I like the app as well to track purity and change settings. So many options out there though.
Made this small flowchart for a friend who kept sneezing through spring but wouldn’t commit to buying an air purifier Step 1: Identify the enemy Is it pollen? Dust? Pet dander? The ghost of springtime past? Yes, yes, and probably yes. Step 2: Must have criteria for air purifier \- can it actually trap allergens? \- won’t sound like a jet engine in baby’s room? \- easy on maintenance? \- doesn’t cost the soul of your firstborn? (ironic but important) Step 3: I went down the rabbit hole Compared Coway vs Levoit vs Dyson vs Honeywell vs one that looked like a spaceship BUT... nothing could compare to [blueair air purifier](https://rantsreviews.com/dp-B073WJL99W) \- Covers big spaces (so your nursery + more = chill) \- HEPASilent tech is real — gets dust, mold, pollen, pet funk, all of it \- Washable pre filter = less guilt about killing the planet \- Doesn’t wheeze like a dying robot at 2am \- Design lowkey slaps too Step 4: Baby sleeps better. You sneeze less. Partner doesn’t threaten to move to the forest. Life improves. You win!!!
I have tried and gotten rid of Bluair and levoit- just inadequate performance and louder than I like. I replaced them with Medify and have been very happy with the switch. If memory serves I have an ma-50 in the living room and ma-40 is each bedroom.
I have BlueAir in all my rooms. Makes a significant difference for me.
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