DysonPurifier Humidify+Cool Formaldehyde PH04

Works great! The app is my only issue. When I try the app for the Dyson Purifier or the Vacuum it takes up too much bandwidth and slows the network down.

Overlook machine that makes a difference

Had the unit for about a month and I can say it makes a major difference in my home environment. The air feels cleaner and my skin feels better. My dogs coat and skin has improved as well with him suffering from dry skin. Odors and dust have been reduced. The unit is relatively quite most the time until it kicks on to full power, but it is not excessivly loud. I've seen reviews about it making unusual noises. which I have heard from time to time, yet haven't had anything excessive. I believe the macine is just relatively complex, so if a seal or such is not set right, or not maintained as directed it would be the culprit. I will be buying additional units to cover the entire house in the future.

Oscillator is a manufacturer flaw.

The machine works great however we had lots of trouble with the oscillator.

Some great features...some other things just OK

Have owned serveral of these Dyson units over the past 5 years. They do markedly increase the humidification levels which is NICE. However, like most humidifiers, they demand distilled water or things will go downhill fast from a cleanliness standpoint. You CANNOT depend on the Dyson citric acid treatment to clean these machines after using normal tap water. It does an incomplete job at best. The purfication features work ok. You definitely have to run them at a high level than "AUTO" if you want to clear the dust from normal air. The sensors do not seem to detect dust, although they do ramp up the purifier fan when detecting harmful chemicals Finally, let's talk design, These do tend to break down in various ways after 2-3 years. Usually some electronic failure kills the units or they give weird error messages about missing water tanks, etc. The Dyson warranty on paper looks good but Dyson support is mediocre at best as it is outsourced to a firm in a non-America/European country and English is NOT their strong suit, and the support provided is them merely following a script where they tell you to do the same tasks over and over. Seems like the script is designed to avoid Dyson having to repair the unit. I RECOMMEND getting these from a 3rd party retailer, instead of Dyson directly, as the retailers have much better extended warranties, albeit at a cost. Finally, I would suggest that Dyson follow their previous brilliant design works, and come up with some kind of water disinfection system such as a UV light in the tank that prohibits mold growth. This is well known technology present in other devices, so Dyson is BEHIND in this area.

Cooling

Seems to be good other than helping with allergies and second hand smoke thought would help with the tenant that smokes above my apartment

Great machine

This purifier is so good. It is quiet and stylish. The best point is to continue giving you information as to the quality of the air in your room either on the machine itself or your phone. Sophisticate absolutely. I am very happy with all the Dyson products that I have purchased.

Excellent! ….It is expensive, but worth the price.

Whisper Quiet

I bought the PH04 about a month ago because my apartment is dry. I have several other Dyson products (I feel like I've joined a cult--this is my sixth Dyson purchase!). My only issue with the humidifier is that it needs to be refilled multiple times throughout the day. This might be due to placement. It's quiet and I believe it's helping keep the air clean in my apartment.