Dyson

Purifier Humidify+Cool PH2 De-NOx

Dyson Purifier Humidify+Cool PH2 De-NOx

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Overall

#143 in

Air Purifiers

according to Reddit Icon Reddit

Sentiment score57% positive
4
2
1
Last updated: Aug 25, 2026

Reddit Reviews

Reddit Icon11LyRa
11 months ago

I have Dyson PH2 and I think it has every control in the Google Home app that is present in the Dyson app, but you don't get any info like temperature, humidity, air quality, etc. https://imgur.com/a/UNRzmlg

Reddit IconMiksu22
7 months ago

u/Qballmjk I received my unit today and happily I can announce that they have done some changes. Although the changes are nothing ground breaking, the duct tape is still there and the lid is already smiling at you when you remove the duct tape. But they have sink all the wire connections from outside of the compartment to hot glue or epoxy resin as well as everything below the circuit board inside the compartment is also sub merged into that same stuff. Therefore making the unit absolutely non repairable in any way or form, but also making it probably first time ever water tight if you have little oopsie at some point. I don't see the water could get inside the circuit board compartment anymore, except from the smiling compartment lid if the duct tape is not holding. Therefore I am going to glue the compartment door shut with epoxy glue, since there is nothing to see or repair at any point anyway. And therefore making sure the water doesn't find its way in there no matter what. I couldn't remove the actual pump unit (grey plastic) from the top cover (white plastic) since couple of the screws were under the epoxy resin. But according to [these photos](https://imgur.com/a/dyson-ph01-pump-examination-8BwpdZ8) by u/techtimee there is no way the water could get inside from there anyway. [Photos of the water pump unit in 2026](https://imgur.com/a/3rNovrk) So in short if you don't trust duct tape water proofing capabilities. I would glue the lid shut with a glue that can fill small gaps like epoxy glue or similar and ditch the duct tape completely. Just be sure the glue is all flat on top of the lid so you can get the top cover over it. After that the water pump unit should be completely water tight afaik. I will update here if I prove my self to be wrong in next two years that the guarantee will cover my investment. And I am going to buy and use only distilled water in this since I want to avoid all problems caused by scaling/lime build up in internal pipes and/or water pump itself. Its a little pricey, but I bet its gonna be worth it in the long run, if this unit can now last many years of use. EDIT: And this unit is sold in EU. I cannot say for sure are the changes worldwide the same. But considering how how small the changes were I bet they could be the same, no matter where you live. EDIT: I sealed the lid now with [Würth 2C plastic adhesive Replast® ME 90 sec.](https://eshop.wuerth-industrie.com/2C-plastic-adhesive-Replast-ME-90-sec-ADH-PLA-2C-REPLAST-90S-BLACK-50ML/0893500051.sku/en/US/EUR/) and leave the duct tape out completely, because it serves no purpose anymore. End result is not pretty, but its under the cover plate so I don't care. At least there is no possibility to get water in the compartment thru that lid anymore. I also glued the screw holes shut since the lid is not coming off anymore. https://preview.redd.it/r9pl4ty2qveg1.jpeg?width=960&format=pjpg&auto=webp&s=0ff35daf46bb6127200647e48ca81e45b35c3ff7

7 months ago

I also bought air quality monitor today that measures CO₂, PM (1, 2.5, 4 and 10), NOx, VOC, Temp. , Air pressure and air humidity. I was mostly interested about the CO₂ levels since I do work a lot remotely from home and they seem to be in good level all day. And also the air humidity, that seems to be a bit too low at the moment. But overall I can see if the Dyson Purifier has some effect on values they claim to purify.

Reddit IconOld_Poem8875
7 months ago

I'm having it since Nov 2025 and I'm satisfied with it so far. I thought about using distilled water but ended up with a tap water. It runs in auto mode 24/7 and I noticed that somewhy it raises the speed every morning up to almost the maximum point. When it does do it makes a slight whistling sound. I'm not sure if it has to be like that or not but it's not very concerning rn. I'll look into that if the sound goes worse. The air flow is strong enough and it removes any smells from the air very well.

Reddit IconThiccTortoise
3 months ago

They will all be expensive, id wait for a sale or find a wholesale one on fb when you know which model and color you want. Either way you cant put a price tag on an investment in yourself/health.

Reddit Icon_kabir_singh_18
7 months ago

I have been using the Dyson Pure Humidify+Cool for a while now as my air and purifier and it has been great for my similar-sized space. It effectively removes fine dust and controls humidity. Filter replacements are a necessity every 6-12 months and electricity costs are at a reasonable rate

Reddit Iconlondonschmundon
4 months ago

We use the Dyson air purifier/humidifier and no joke - it's so good we bought two more and sent them to our adult kids!

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