Dyson HP04 Air Purifier: Trusted Review & Specs

The Dyson HP04 – the newer version of Dyson Pure Hot+Cool series, is unsurprisingly popular. Do you want three different devices for three jobs, or just only one? Well, that’s the concept of the Dyson Pure Hot+Cool HP04, and with the upgraded fan power to match the Dyson DP04, there is no reason to hesitate paying more. Today, we will check the Dyson HP04 Review for all time.

Dyson HP04 ranks B- in our air purifier ranking list. We give the biggest and most thorough database of air purifier reviews in the world.

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Dyson did it again, the newer Dyson HP04 in the Dyson Pure Hot+Cool series could easily be its proudest device, one thing that other air purifier brands rarely to make a worthy product to challenge. Is that the best of the Dyson HP04? Let’s find out in our today Dyson HP04 Review.

Dyson HP04 Price

The Dyson HP04 is a fitting anniversary air purifier for Dyson, and the fourth generation of the Dyson Pure Hot+Cool series. Besides the obvious heating and cooling power, the air purifier will be upgraded with numerous additional function, to make it one of the best smart air purifiers at the moment.

This lineup of Dyson officially displays a trend after the idea debuted on the old Dyson Pure Cool Link, to combine the old bladeless fan and the air purifier. Then we can easily guess the heating function will be available soon, and here we go with the Dyson Pure Hot+Cool. It’s all designed to be the iconic fan of this company, but deep inside you will get the most advanced technology to not only purify your indoor air, but also maintain a comfortable temperature all year round.

In the second generation, Dyson has introduced some smart features like Smart Sensor and/or Wi-Fi capability function into the HP02, but the Dyson HP04 even has more than that. There will be not one, but three different sensors to reflect any differences in your whole indoor air quality. Other fan functions are upgraded to be the most innovative at the moment.

But the best part? All the upgrades are only worth $50, as the official price of Dyson HP04 is only $649 compared with $599 of the previous Dyson HP02. Dyson always save deals for any loyal customers, so you will easily grab the next one with a discount.

With the launch price is not so different with the previous models, it’s a great investment, especially for new users. However, other brands in this price range are also the highest-quality flagships of big air purifier brands, granting you lots of options over this Dyson HP04. The Rabbit Air MinusA2 and AIRMEGA 400S are the best contenders, thanks to their advanced filtration system, a great-to-good fan power and finally, the smart features. Even if you demand the strongest air filters in the market, you can choose between the Austin Air HealthMate Plus, Airpura R600 or AllerAir 5000. They don’t have such fancy features like the Dyson HP04, instead they pack with the real thick-and-deep air filters, mostly for the extreme allergies and asthma sufferers. Or even the overestimated Molekule Air can be found in this segment, too.

Again, there is one thing I need to remind you, the Dyson HP04 and the whole Dyson Pure Hot+Cool series is unique in the market for their triple function. Do you want to use three separate devices, or just only one? It’s your call.

Related post: Best air purifier 2023.

Dyson HP04 Design and Size

If you love the Dyson design, just like me, you will spot the Dyson air purifier out of the crowd easily. And if you are a real Dyson fan, you will easily call the name of a Dyson Pure Hot+Cool product. The Dyson HP04 remains all the remarkable design of the true Dyson product, be it the bladeless fan or the oval amplifier.

Back to the old story of the oval shape in Dyson Pure Hot+Cool. It took less space than the round amp, but it can’t move the same amount of air. This won’t be the case of Dyson HP04 anymore, as the air purifier can be as powerful as the Dyson DP04.

It is also taller than the predecessors, as the height of Dyson HP04 is 30 inches, making it not a real desktop air purifier anymore. Actually, it is near the same size with huge air purifiers like GermGuardian AC9400W or Levoit LV-H134. The amp diameter increases to 8 inches instead of 6 inches in the past.

The LCD display is now moved above the air intake grill, and it is overall detailed and clear than the previous models. Any information of the temperature, humidity level and current indoor air quality are displayed in the new LCD display.

Source: Amazon.com

With the new size, the Dyson HP04 is also heavier, up to 12.35 lbs. However, it is light enough for you to move around your home.

Related post: Best air purifiers for bedroom.

Dyson HP04 Filters

We will use the latest glass HEPA filter in the Dyson HP04, as well as an improved 2-stage air cleaning system as below.

Like any old models (generally 01 and 02) of Dyson, both versions of Dyson Pure Hot+Cool will only use one air filter to do the air cleaning task.

1. True HEPA filter – With the glass HEPA filter, the Dyson Pure Hot+Cool is able to capture 99.97% all airborne particles as small as 0.3 microns, including pollen, bacteria and pet dander.
2. Activated Carbon filter – Removes household odors and gases such as formaldehyde, benzene and nitrogen dioxide.

Now, with the strong Activated Carbon filter, filled with tris-impregnated carbon, the Dyson HP04 can adsorb any gases, odors and chemicals in your home. Just spray an insect killer and you can see our today Dyson HP04 to purify the air in only 2 minutes.

Back to the glass HEPA filter, it is pleated 238 times with 29-feet borosilicate microfibers, to ensure the best performance to deal with any particulate matters as small as 0.3 microns. Like any Dyson air purifiers, the air filter is certified by the Asthma and Allergy Foundation of America (AAFA) for asthma and allergy friendly and California Air Resources Board (CARB) for being safety to use. That being said, the air filter is high-quality and 100% ozone-free to use.

Source: Dyson website

I tested the Dyson HP04 in the same test with old Dyson Pure Hot+Cool, in a room of 200 square feet and after 1 hour. The device performed much worse than the Vornado PCO575DC, Levoit EverestAir, Winix XQ and Rabbit Air A3.

The next-gen glass HEPA filter for this Dyson HP04 is only $79, meaning $10 different from the old one. You can only use the air filter in 1 year, and should replace it for optimal performance.

Related post: Best air purifiers for allergies.

Dyson HP04 Room Coverage

Dyson HP04 is as strong as the newer Dyson DP04 in terms of fan power. It is recommended for room of 126 square feet by the Energy Star.

Because this air purifier is also a fan, we don’t have the ACH and CADR ratings. Dyson told that high CADR rating doesn’t mean better, so it doesn’t quote any CADR score for its products.

The ACH of Dyson HP04 is 4X. However, if you are running the air purifier in 400 square feet, expect it to clean for only once per hour.

The CADR of Dyson HP04 is 50 cfm in general. It is far too low for an air purifier in this price range. The maximum airflow of Dyson Pure HP04 is 83 gallons per second, equal 665 cfm. It seems like the cooling fan power helps distribute clean air a bit faster, but our testing showed that the performance is subpar.

Related post: Best large room air purifiers.

Dyson HP04 Sound

Another benefit for having Dyson air purifiers is their super silent operation. Noise level is measured to be only in the range 40 to 57 decibels (dB), which is considered “silent”. Of course, this is not the best quiet air purifiers, but I bet anyone can be annoying with the Dyson fan. The airflow is smooth, and the Dyson HP04 is even awarded for improved sound and quality with Quiet Mark.

That being said, the Dyson HP04 is a great air purifier to use in almost anywhere, be it your bedroom or office.

Related post: Best air purifiers for baby.

Dyson HP04 Power Consumption

One of our most FAQs is “Do air purifiers use a lot of energy?” In fact, an air purifier must be used for a long time to be efficient. And power consumption is one important criteria to review if this air purifier is good or not.

In cooling mode, the Dyson HP04 has a power consumption from 36 to 44 watts, which is low enough for an average air purifier. The rated power for heating mode, however, is as high as 1575 watts. You should know that the heating mode can’t be energy-saving, and such power consumption is still better than some console heaters.

If you only use the Dyson HP04 for air purifying purpose, and run it 8 hours per day, you only need to pay $16 each year.

Related post: Best air purifiers for pets.

Dyson HP04 Additional Features

Just like all the flagships of Dyson, we buy the Dyson HP04 mainly because of its wonderful additional features. High-end air purifiers often offer many handy features, to help us use them in a smarter and easier way.

The Dyson HP04 is one of Dyson Pure Hot+Cool lineup, and it grants two more function beside the core air purifier nature. First is the cooling mode, with 10 different fan speeds to change, it can deliver a powerful stream of purified airflow to cool you. Second is the heating mode, which projects purified heat and save you for the whole long winter season.

The oscillation setting from previous models is improved in a much better way. Our previous model can only swing for 70°, while the Dyson HP04 can adjust the oscillation up to 350°. Combining with the powerful airflow it projects, Dyson HP04 can easily reach any parts of your room.

Moreover, you may not always be in the warm months, and there will be time that you don’t need the cooling power of Dyson HP04 to kick off. Dyson added the Diffuse Mode to help you reverse the airflow, and as the result, stop cooling. It is a necessary option, one that you should really go for.

There are three main ways to control your Dyson HP04. Be it the remote control, which is magnetic and can stick to any parts of your air purifiers, so you won’t forget where you left it. Of course, the remote control will be packed with more buttons than the minimalism one of old Dyson HP01.

Second, you can control your air purifier via the Dyson Link app. It even gives you the current status of both indoor and outdoor temperature, air quality as well as humidity level. The app can help you schedule the air purifier, or check the filter life whenever you want.

Finally, the Dyson HP04 is a Smart air purifier and you can use Alexa to control it via voice commands. Remember to use short and simple spoken instructions so it can understand your commands. Actually, I don’t value much this function, as I’d like to interact with my device more thoroughly.

In normal air purifiers, you will have a basic dust or smoke sensor, mainly to detect the current air quality changes. However, our Dyson HP04 is one of the few devices to introduce 3 different sensors. The humidity and temperature sensor is the first one, to constantly monitor the relative humidity and temperature within your room. The next one, the particulate sensor uses laser measurement, and can actively analyze the particulate concentration. Instead of the smoke sensor, Dyson’s gases sensor can even track the Volatile Organic Compounds (VOCs) or oxidizing gases.

Source: Dyson website

This Smart Sensor feature will automatically report to you via the LCD display, and if you enable the Auto Mode, the Dyson HP04 can adjust the fan speed to quickly respond to the indoor air quality changes. In just a matter of minutes, and any spray of chemicals will be cleaned. Also, the LCD display will show the indicator for filter replacement, so you don’t need to remember the date manually.

We still have the Night Mode to help dim the display and lower the fan speed instantly, and a basic Timer to schedule the activity of our air purifier.

Related posts:

1, Best air purifiers for smoke.

2, Best air purifiers for dust.

3, Best air purifiers for mold.

Dyson HP04 Customer Service

Dyson is one of the best brands for its impressive customer service. Once you are Dyson’s customer, the company promises to help you even after your warranty has ended, which is something that not many brands dare to do.

To reach its support, you can either search for it yourself in the thorough online guides, or you can contact easily with this line: 866-693-9766. If you can’t call the customer service (for example on Sunday), you can email it at questions.us@dyson.com.

Most importantly, you should be Dyson’s customer to have access to its exclusive VIP loyalty programs. Once registered for the warranty, you can enjoy Saving Events to help you save 20% on your next purchase, as well as reminders for free preventative maintenance checks at a Dyson Service Center. Finally, you will have access to a VIP hotline for 24-hour support: 866-664-9004.

Like many big brands, Dyson provides free shipping for its products. You can return an order with free shipping as long as you are within the 30-day money-back guarantee. This could be one of the most generous offers for refunds among any air purifier brands.

Dyson only has a 2-year warranty for both labor and parts on its air purifiers. For such expensive air purifiers, the warranty is a bit short.

Our verdict

The Dyson HP04 is a must-have item in any U.S households, as it represents three important devices in only one body. The performance is beyond expectation, and the best part, it is just nearly the same price with the predecessors.