Customer reviews from Dyson
Dyson - Refurbished Excellent - Purifier Humidify + Cool Formaldehyde - PH04 - White/Gold
Average customer rating
3.7
(138 Reviews)
Rating breakdown 138 reviews
5 Stars
74
4 Stars
12
3 Stars
14
2 Stars
11
1 Star
27
67%of customers recommend this product.
(
77 out of
115)
Customer Reviews for Dyson - Refurbished Excellent - Purifier Humidify + Cool Formaldehyde - PH04 - White/Gold
Posted by: Air purifier
Gender:Male
Verified Purchase:Yes
Working great, the air smells great it shows the humidity and filters life on the app
I would recommend this to a friend!
Response from DysonBy Dyson Customer Service, April 16, 2026
Thank you so much for sharing your wonderful feedback! We’re thrilled to hear that you’re enjoying your Dyson and finding it's great. We truly appreciate your input and are glad you’re happy with your purchase. Thank you again for your kind words!
Written by a customer while visiting Dyson
Posted by: Atom87
Gender:Male
Verified Purchase:Yes
If I could give this zero stars, I would. It worked well for about 2 weeks. Now it won’t humidify, says there is a drip tray overflow, when there is more, has been left to dry for several days, just in case. Also does not oscillate now, won’t even transition from front blowing to rear, or vice verse. Not to mention this isn’t the first problem I’ve had. This unit is a warranty replacement for a previous unit that also stopped oscillating and wouldn’t recognize water in the tank, also the pump column has failed several times, as it did on my previous unit.
No, I would not recommend this to a friend.
Response from DysonBy Dyson Customer Service, February 24, 2026
Thank you for sharing your detailed feedback and for taking the time to let us know about your experience. We truly appreciate your patience and understand how important it is for your unit to work reliably, especially after a warranty replacement. Your comments about the drip tray overflow, humidifying function, oscillation, and pump column issues are valuable to us and help highlight opportunities for improvement. If you're open to it, our live chat and voice support teams are ready to assist you further and work closely with you to find a lasting solution. Your satisfaction is very important to us, and we're committed to making your experience better. Thank you again for your input and for giving us the chance to help.
Written by a customer while visiting Dyson
Posted by: DJSOLO
Verified Purchase:Yes
Great air
Good feel
Great cooling
It effectively
Good feel
Great cooling
It effectively
I would recommend this to a friend!
Response from DysonBy Dyson Customer Service, February 22, 2026
Hello, thank you for sharing your feedback. We are pleased to hear that your Dyson Purifier Humidify+Cool Formaldehyde PH04 is delivering fresh air, effective cooling, and creating a comfortable environment in your space. This level of performance reflects our commitment to combining advanced filtration, cooling, and humidification technologies with user-focused design. Your experience reinforces our mission to engineer solutions that make everyday living healthier and more enjoyable. Should you have any questions or need support in the future, please do not hesitate to contact our chat or voice support team. Thank you again for your feedback.
Written by a customer while visiting Dyson
Posted by: Customer
Verified Purchase:Yes
I bought 4 units to cover different parts of my home 2 years ago and I had to contact Dyson for three different issues, one of whih required a replacement.
Response from DysonBy Dyson Customer Service, February 22, 2026
Thank you for sharing your experience. We appreciate that you have invested in multiple Dyson units for your home, and we understand that having to reach out several times can be frustrating. Our team is here to ensure you get the best performance from your styling tools. If you would like to discuss your experience further or need support with anything, we invite you to connect with our live chat or call support team. We are ready to help and find solutions that work for you. Your satisfaction is important to us, and we value your input as it helps us continue to improve. Thank you again for choosing Dyson and for sharing your feedback.
Written by a customer while visiting Dyson
Posted by: Mama Bear
Gender:Female
Verified Purchase:Yes
This machine is one of the best additions to our home we have ever made! The air feels crisp and clean. The humidity is perfect and it has the design quality you would expect from Dyson. From someone who has terrible seasonal (all seasons;) allergies, this is a game changer. I would highly recommend!
I would recommend this to a friend!
Response from DysonBy Dyson Customer Service, February 18, 2026
Hi, thank you so much for sharing this wonderful feedback with us — we truly appreciate you taking the time to let us know. We’re delighted to hear that your machine has made such a positive difference in your home and that it’s helping you breathe easier throughout the seasons. It’s always rewarding to know our technology is bringing real comfort and support to our owners. We’re glad to hear this, and thank you again for your kind input.
Written by a customer while visiting Dyson
Posted by: Eric
Verified Purchase:Yes
Just be aware that it is not a heavy jumbo humidifier. And for max moisture production, you must max out the fan - not the quietest thing. Purification is a nice plus, but I already had 2 other purifiers. My air is very clean.
You will appreciate the very low maintenance. Most other options require complete cleaning every few days - yuck! And if you don’t give them a good scrub every few days, you will be shooting slime, gookus, and bacteria into your air. The Dyson stays clean as a whistle - very nice.
Very happy with my purchase.
I would recommend this to a friend!
Response from DysonBy Dyson Customer Service, February 14, 2026
Hi, thank you for sharing your experience with us. We’re glad to hear that you’re enjoying your machine and that the low‑maintenance design has been such a helpful change compared to other humidifiers. It’s great to know the purification feature and overall performance have made a positive difference in your home. We truly appreciate your thoughtful feedback and are happy to hear you’re very pleased with your purchase.
Written by a customer while visiting Dyson
Posted by: Shellb
Gender:Female
Verified Purchase:Yes
Horrible! I bought my original purifier/humidifier in December 2024 which lasted until November 2025. I took it to the local Dyson repair shop and had to be sent a replacement machine in January 2026. The same issue happened with the second machine: after turning off the machine, the swing flaps closed and then do not reopen when turned back on. DO NOT BUY THIS EXPENSIVE hunk of crap!
No, I would not recommend this to a friend.
Response from DysonBy Dyson Customer Service, February 11, 2026
Thank you for sharing your feedback, and we’re truly sorry to hear about your experience with your purifier/humidifier and its repeat issues. We understand how upsetting it is to face the same problem twice, and appreciate you taking the time to let us know. Your input matters and helps us improve. If you continue to have any performance issues, please reach out to us through live chat- http://ms.spr.ly/6421QuWBL or by phone- 1-866-693-9766; our agents are ready to assist you and find a solution. Thank you again for your comments and for giving us the chance to make things right.
Written by a customer while visiting Dyson
Posted by: Disappointed
Gender:Male
Verified Purchase:Yes
The humidifier portion of this machine is designed to fail. We run distilled water only. Yet it still builds up residue causing the pump to fail or the tube to the evaporator to plug. The deep clean cycle is not enough to stop this from happening.
No, I would not recommend this to a friend.
Response from DysonBy Dyson Customer Service, December 11, 2025
Hi there, thank you for sharing your feedback. We’re sorry to hear about the issues you’ve experienced with residue buildup in the humidifier, especially despite using distilled water, and that this has led to pump failure and tube blockages. We understand how frustrating it is when the deep clean cycle doesn’t prevent the problem, and we appreciate you taking the time to let us know. We’d really like the opportunity to look into this further and support you directly, so please reach out to us via live chat or give us a call for the best possible resolution. Your satisfaction is important to us, and we remain committed to helping you get the most from your cleaning solutions. Thank you again for your input.
Written by a customer while visiting Dyson