Dyson - Pure Hot+Cool HP04

Oh, fuck no. As an owner of four of these things, they’re some of my most regretted purchases. They have a laughably low CFM, are stupid loud on even medium speeds, develop squeaky bearings within months, the filters are expensive as shit, and the software sucks. Seriously, do not buy one of these. Edit: I have two TP07s, an HP04, and an HP09. They all suck equally.

I’ve been using Dyson (wifi) with Homebridge and it’s been reliable. Most of the parameters does sync and work with HomeKit automation.

Dyson customer service is crap. I bought the hot and cold one. From the box, it wouldn't track the pollutants in the air when i paired it to my app. I thought since it was a new pairing, i needed to give it a couple days for a reading. I forgot about it. A couple of weeks go by and my wife reminds me that there's still no reading. So I called customer support. We tried trouble shooting it. No go. Then we had a video call and did more trouble shooting. Nada. Then they said I could pay to send it in and they'd take a look at it. I said "over my dead body, it's 2 weeks old!" Then they said they'd pay for shipping. At this point, I was pissed. I said I wanted them to send me a new one and I would send it back. They said no can do. I ended up contacting Amazon and getting a full refund. Yeah, screw Dyson.

Dyson Pure Hot + Cool Link. I think it’s from 2016? The filters are a continuing cost but overall very happy with it.

Just don't... This is HP04 filter after several months of use, compared to a significantly cheaper competitor after just 1 week of use in the same apartment. Dyson air purifiers just aren't good... Not for particles or VOCs, and the humidifier wasn't doing anything about my humidity problems during winter either.

Both of them have an outer mesh. Most air purifiers have filters with an outer mesh, specifically for this reason... The biggest particles get cought there, smaller particles go in the HEPA filter, and then the VOCs go in the carbon filter. The fact that it has sucked up dust demonstrates that it's good at sucking up particles. That there is almost nothing on the Dysons outer mesh, shows that it hasn't really been sucking anything up.

Which is why I have it... For air purification. To suck up crap from the air in my house. If it's on the filter, it's not in the air I'm breathing. The Dyson didn't do that, and spending a minute every other week to remove that dust is much better than having it floating around in the air.

I have actually researched it, and I know why this is happening. The Dyson has a much lower clean air delivery rate, about a sixth of the cheaper machine, so it just handles a lot less air. The Dyson is able to clean the air in my room about 2 times per hour, vs 11 times on my new machine. Both machines use HEPA filters with a pre mesh, and a carbon filter, as most air purifiers do. With the exception of the Dyson Big + Quiet, Dysons air purifiers have the performance of a low midrange purifier, while priced top of the high end machines, and that's where the issue lies... Price vs performance.

Yes, you're correct, the dust on the Dyson filter is in small spots, due to the plastic cover, but the comparison is about those tiny spots being what Dyson has pulled in over months, vs what the other brand has pulled in over a week (which means instead of being on the filter, the dust will be in the air I'm breathing) ... But again you are right, this alone doesn't necessarily guarantee that it's bad at all aspects of cleaning air. I did look into it a bit deeper after making the post, though, and it turns out the Dyson only has a clean air delivery rate of around 160, which is extremely low for its price range (for the price they tend to be at around 400-600), and it only has 150 grams of carbon. These are the specs of a low end machine. Similar to what you will get with a machine that's about $100. The exception is the Dyson Big + Quiet, which is a pretty good machine. Clean air delivery at about 400, and I believe it had a carbon filter with around 1000 grams of carbon.

The real issue here is that the Dyson has a smaller and less powerful fan, smaller filter, and sirculates less air. It cleans the air in my room 5 times per hour, while the cheaper one cleans it 11 times per hour.

i splurged and got the dyson air purifier that also works as a fan and space heater. personally, it was well worth the investment. i'm able to monitor the air quality, humidify and temperature in my home through an app.

Yes I have two and sold a third. I also have a Molekule but prefer the Dyson especially since it’s easy to transport when I travel and the remote comes in handy to not have to use WiFi when traveling. The fact it has heat and cool too just make it a win win!

I have a hot/cold Dyson that runs daily. I got it in 2020 and if my house were on fire, I would save my fan!

Just never buy from blue air directly. They won’t help up if a package is lost. I’ve used a few other smart purifiers. The Dyson ones suck at dust and the smart part works with Alexa and google home only and it’s very buggy. It needs to be reconnected often. Just got a lg 360 and it’s good other than the wifi module in the unit. It loses connection frequently and also is limited to their app. It briefly worked in Alexa and google home but often non responsive. It does have built in air quality sensor though. We also had a blue air sense model several years ago. That was one of their first smart models. It had to get WiFi reset about once a year and didn’t support a lot of integrations. Eventually the WiFi module failed on it. We have business grade wifi (Cisco Meraki mr56 x 2 APs). so it’s not like budget consumer WiFi routers.

I feel for you, OP. I am an allergic-to-everything person to the point that I've needed to move homes to get away from paint, varnished wood, carpet, etc. The biggest trigger for me, though, and maybe for you is any centralized heating and cooling system. The systems' filters don't matter - the room's unfiltered air is also being blown in your face. I haven't found a purifier that can offset this problem. I don't use ACs and all my heat is water-based or electric. I experimented with Dyson - if it's the model that provides heating or cooling, there is a chemical in the device that can cause reactions. You can also be sensitive to the material in any carbon filter, like coal. The imperfect journey continues, but I ended up getting a custom purifer from Aller Air and I use it in the same room as a Coway HEPA. One for gas and chemicals, one for particulates. It still doesn't save me completely from my dusty old building, but I can now be confident that it's the only issue. Good luck!