Dyson Purifier Humidify+Cool Formaldehyde™ PH04

The Dyson Purifier Humidify+Cool Formaldehyde™ PH04 has been an exceptional addition to my home environment. This advanced device combines air purification, humidification, and cooling functions, specifically targeting formaldehyde, making it a comprehensive solution for maintaining clean and comfortable air quality.One of the features I appreciate most is the formaldehyde detection and removal capability. The PH04 is equipped with a unique sensor that continuously detects formaldehyde, a common indoor pollutant, and a catalytic filter that breaks it down into harmless water and CO2. This feature provides peace of mind, knowing that my home is free from this potentially harmful chemical, which can be released from furniture, cleaning products, and other household items.The air purification performance of the PH04 is outstanding. It uses a HEPA filter to capture 99.97% of particles as small as 0.3 microns, including allergens, bacteria, and dust. This is especially beneficial for my family, as we have members with allergies and asthma. The device has noticeably improved the air quality in our home, reducing allergy symptoms and making the indoor environment much more pleasant.The humidification function is another standout feature. The PH04 adds moisture to the air, which is particularly useful during dry winter months or in air-conditioned environments. The humidifier is hygienic, using Dyson's Ultraviolet Cleanse technology to ensure that the water used is free from bacteria. This feature helps maintain a comfortable humidity level, preventing dry skin and respiratory discomfort.The cooling function is also highly effective. The PH04 delivers a powerful stream of cool air, which is perfect for hot days. The fan is quiet yet efficient, providing a cooling breeze without disturbing the peace of the room. The ability to purify, humidify, and cool the air makes this device a versatile all-in-one solution for year-round use.The design and usability of the PH04 are exceptional. It features a sleek and modern look that fits seamlessly into my home decor. The digital display provides real-time information about air quality, humidity levels, and filter life, making it easy to monitor and control the device. The accompanying app allows for remote control and provides detailed insights into air quality, further enhancing the user experience.Maintenance is straightforward with the PH04. The filters are easy to replace, and the device provides notifications when it's time to do so. The humidifier has a simple water tank that is easy to fill and clean, ensuring that the device continues to operate efficiently and hygienically.Overall, the Dyson Purifier Humidify+Cool Formaldehyde™ PH04 has exceeded my expectations. Its combination of advanced formaldehyde detection and removal, high-efficiency air purification, effective humidification, and powerful cooling makes it an essential addition to any home. The device has significantly improved the air quality and comfort in our living space, providing a healthier and more enjoyable environment. I highly recommend the PH04 to anyone looking for a comprehensive air treatment solution. It has become an indispensable part of our home, ensuring that we breathe clean, fresh, and comfortable air every day.

I’ve only had it for two weeks, used in a small 800 SF room/apartment. Outside humidity is in the 20-40% range. Was looking for something to keep the indoor humidity around 40%. I’ve only filled it with reverse osmosis water so there is no mineral content in the water.Pros: it looks nice and the app and features of sensors appear to work like they should.Cons: it only raises the humidity in the room by 5% with it running on full power for 24hrs. The indoor humidity doesn’t get over 33% even when the machine is set to target 70%. It uses about the whole container of water in 24 hours which tells me it’s functioning properly, it just can’t do the job. I inspected the wicking material and there seems to be some growth of something on one end of the wicking cloth. Not sure what it is? Having worked with Dyson for warranty on a vacuum before, I don’t want to deal with that process again, so I’m returning it within the Amazon return window. Also, the reviews on the Dyson website are terrible, which I should have seen earlier.

I was expecting just a humidifier, but I got so much more. In our household, both my wife and our pet are highly allergic—ironically, even to each other. We initially purchased this device to help us during the winter months primarily for its humidification benefits, as we already have air filters in the house. However, since we bought it, we’ve realized that it's much more than just an expensive humidifier.The electronics and app are exceptional. The device can read various air quality metrics and display them on the built-in LCD screen or provide real-time information through the app. While this feature is great, it’s only useful if it's accurate. In our experience, the Dyson is extremely precise. Even with our chef's hood running, the Dyson detects when we are cooking and when more pollutants have entered the air. The app reflects these changes within minutes, and the device automatically adjusts its operation to purify the air accordingly. Compared to our Alen air purifier, this machine surpasses it in performance!Be prepared for its size—it’s roughly the size of a skinny three-year-old child. We placed our Dyson on a rolling planter platform, which allows us to move it easily around the house. Despite its size, the machine is user-friendly and operates seamlessly. Since it is designed to run continuously, it is also important for it to be energy efficient. Based on our observations, the energy consumption seems reasonable for the benefits it provides.Ultimately, whether or not it is worth the investment is up to you. For us, the fact that it can measure air quality, actively purify the air, and then show its impact makes it far more valuable than other basic solutions that simply run without providing any feedback.

The first unit they sent broke twice in a 48-hour period. The first time the local Dyson repair shop could fix it in 15 minutes, but the second time I had to deal with a phone support guy who didn't listen and finally they asked me to send it in for replacement. The result of that is they had my money for three weeks while I had no unit.The new unit has worked continuously for a week, from which I gather the first was simply a lemon. The air quality is dramatically improved and I am sleeping better. This is well worth the price. Hopefully the bad unit and the bad support was just a fluke.