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.

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.

Great timing, I'm also looking at some Levoit air purifiers on Amazon. It says in Google it will link to "Vesync" which is their smart app, but I don't have one to test out the Google home capabilities. I do have a Dyson HP04 and that is now usable in the GH app.

First, any premium item with that big of a discount is usually "worth it". Secondly. The Hot/Cool work great. Bought my first about 6 years ago when it was called the HP02 Link model one of the first to use wifi/app. The HP02 saved us during a freeze with no power for days...hooked it up to the portable generator to keep our room warm. Then we decided to add another Hot/Cool 4 years ago HP04. We also have a Pure Cool. No issues on any, just regular maintenance like changing filters. We are happy with them all and the app to control and review data. I think the AM models don't have wifi/app capability...I was researching them recently to add another hot/cool.

I did much research when i bought my dyson in 2020 during covid. What I love about dyson is all the extra info u get real time about air quality. Humidity, temp, voc, etc. it’s a great quality machine. Hp04 model w heat

I hate to let you know that CADR really only means how quickly a specific area can be purified. Since I run my Dyson 24/7 I don’t care if my area needs to be purified within a few minutes, it runs all the time. You’ve been under the guidance that it’s all about speedy air purification which is the total farce. It doesn’t make one iota of difference if your space can be purified in five minutes or 10 minutes it doesn’t matter as long as it does a good job and Dyson gives you so much other data that other machines don’t.

Loling at the smooth brain comments in here talking about it captures air pollution in a way that doesn’t clog the filter… just 🤣. For reference I own a HP04 but I understand it’s limitations.

Both, I have the hot and cool link, we like it for monitoring and purifying, plus single room heating. It works great in conjunction with our HVAC system so it’s basically providing a single room filter plus heating capability, and helps push around the well-filtered air from the HVAC. And we can see when the HVAC filters actually need to be changed because you can see the stats no longer sit at 0 the whole time. But let me be clear, it’s absolutely not worth the price

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!

I’ve been very happy with our Dyson hot/cold air purifier. It’s so satisfying hearing the dog fart and three seconds later it boosting up to remove the “environmental threat”.

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.

I’ve got both a breville (for a medium sized room, cost about $100) and a Dyson hot+cool with purification ($545 on sale at JB now) and both are great and non-wifi!

I second these. We made them for my pottery studio in the basement and for the area with the cat box first. We literally cannot smell the cat box at all now- until it’s time to change the filters! They work really well for their purpose and I’d recommend at least trying it since it’s going to be a lot cheaper. We also have two dysons- they’re heat and cool with an air purifier- and not only do they not seems to do much of anything to the air, they also have expensive filters and get mad when you use an off brand one. (They are absolutely awesome for temperature control in a 100 year old house, though.)

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!

Same, been brilliant so far.

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

I have a Dyson, BlueAir, and Levoit in various areas of the house. Levoit is near the litter box and is loud but does a good job - we never smell the litter box. 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 Dyson is our most expensive one and we would probably not buy again. We like that it’s also a fan when it’s warm, but it doesn’t perform any better than the BlueAir which was a fraction of the cost.