Blueair - Classic 501/503/505/510 Series
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Reddit Reviews:
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Based on 1 year's data from Feb 24, 2026 How it works
Liked most:
12
1
"it's fantastic in keeping the farm smell to a minimum."
"it’s majorly helped w allergies and dog smell"
"happy to hear from guests our house doesn’t have a dog smell."
20
0
"it’s majorly helped w allergies and dog smell"
"has substantially lessened my seasonal allergy symptoms while in the house"
"I have terrible allergies and use Blue Air on every level. Works amazing."
4
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."
5
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."
"Premium built, that's for sure."
9
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"
Disliked most:
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."
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."
1
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."
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
"the auto setting barely did anything unless I literally blew smoke at them"
"Their sensors suck"
Jet_Threat_ 1.0Do have the Coway 250 as an option? I got one for $250 open box or refurbished on Amazon. It’s amazing. The sound it makes is very pleasant and it’s easy to clean, and aesthetic. The Coway or 240 is also a good choice and comes in white. The Winix 5500-2 or C535/C545 is also a solid choice and a bit more affordable. I believe Costco has good deals on the C545. Lastly, you could check local marketplaces. I got some Winix, and Blue Air purifiers (the 203 slim, 403, and 503) for a great price.
ShivaSkunk777 1.0I 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.
Blowingleaves17 0.4I 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.
timesuck 0.4Used 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
MysterySkanker 0.0I 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.
9ine6ix5ive 0.0I have BlueAir in all my rooms. Makes a significant difference for me.
Acceptable-Basil4377 0.0It helps a lot. I bought it due to smoke but I’m happy to get rid of cooking and dog smells. I have one from Blueair.
accountaholic26 0.0We love our blueair also. Got a dog a month ago and happy to hear from guests our house doesn’t have a dog smell.
Adorable_Dust3799 0.0I love my blueair. It's highly rated for the price, and has a cloth sleeve you wrap around the outside and toss in the wash that prefilters out the husky fluff. If your pup is smelly it's probably oily, and needs either more roll in leaves and dirt time or more frequent bathing. A simple rub with a damp cloth frequently, like daily if you're not using soap, will work wonders.
Affectionate_Bus_884 0.0I’ve been using blueair purifier. I have 5 of them a few I’ve owned for over 4 years and I love them.
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