Classic 680i

I recommend to stay away from Blueair. The company sold off to an investment firm in 2016 and it’s not the same company as it used to be. I bought a $900 (classic 680i) purifier from them in 2020 and the fan went bad after only -4 years of use on low setting. Blueair CS won’t sell replacement parts or offer a warranty repair (they say they don’t have spare parts). They offered me a small discount on a much smaller unit with a much smaller filter area. I was spending around $75 a month (over $4k) on filters directly from them on auto order. extremely disappointed.

I really liked the 680i unit. We live in a city and at the time lived in a large loft apartment with lots of neighbor issues. The filter helped with the air quality a bunch. I could notice it working even without the app telling me air quality was better. I would still be buying their filters and have it running in my bedroom to this day if they JUST SUPPLIED A REPLACEMENT part instead of trying to sell me a cheaper unit.

I have two Blueair purifiers that can get very loud on the highest setting--the 211+ Auto and the Classic 500/600. The latter one was discontinued and the 211+ can still be bought at Amazon, but not at Blueair. Finding OEM filters is no problem for either. You might also consider a sound machine that has fan noises and can get very loud. The loudest and best one I have found is the one below. It has 10 fan sounds and 10 white noise sounds, and the only machine loud enough for me. [https://www.lectrofan.com/collections/lectrofan](https://www.lectrofan.com/collections/lectrofan)

The Classic Blueair models with carbon filters work fabulously, yet I have only seen them priced as low as $300 when on clearance. You can still easily get filters for clearance models, though.

We use BlueAir Classic, they’re quite effective and are WiFi enabled. The companion app is sometimes frustrating to use but it’s outweighed by the fact that they have an API and can be automated. So I have the purifiers run a different speeds based on the values of our IKEA Vindstyrka.

Every house has a smell, coming home from travel you will notice your own. During Covid purchased an oversized for my space hepa air cleaner (blue air) with charcoal oder eliminator and since my house has no smell. Zero. Even when I run a scent diffuser it doesn’t smell beyond the room it’s in. I recommend all the cleaning suggestions, this is more long term. Mine runs 24x7 even when gone for a week or more. Some may be uncomfortable with that, but that’s for the insurance subreddit :-).

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.