In this Dyson HP07 vs HP09 review, we will compare two Dyson air purifiers that can help you clean your indoor air from PM 2.5 and other types of air pollution.
Additionally, both devices can also be used to heat or cool you. So what are the differences between the Dyson Purifier Hot+Cool HP07 and the latest model of the series, the Dyson Purifier Hot+Cool Formaldehyde HP09?
This side-by-side comparison will help you find out.
Dyson HP07
Dyson HP09
Coverage Area
81 m³
81 m³
Airflow
290 l/s
290 l/s
CADR (Particles)
?
?
CADR (Formaldehyde)
N/A
?
Working Noise
Up to 62 dB
Up to 62 dB
PM 2.5 Sensor
Yes
Yes
Comparison: Dyson HP07 vs HP09 – What are the Differences?
Coverage Area & Efficiency
The HP07 and HP09 have a coverage area of 81 m³ (2860 ft³) when it comes to purification. For heating, Dyson recommends a room size of up to 35 m³ (1236 ft³).
An oscillation angle of up to 350 degrees ensures that the purified air gets projected evenly throughout the room. And if you want purification without cooling, you can simply switch to backward airflow mode.
Winner: Draw
81 m³ / 35 m³
81 m³ / 35 m³
Clean Air Delivery Rate / Airflow
Removing 99.95% of particles as small as 0.1 microns, both devices also use activated carbon to remove odors and gases including VOCs. The HP07 and HP09 are fully sealed to HEPA H13 standard and therefore reliably keep those captured pollutants inside the machine.
A powerful airflow of 290 liters (77 gallons) of purified air gets projected throughout the room every second. Unfortunately, Dyson does not disclose the CADR for their air purifiers.
Winner: Draw
290 l/s
290 l/s
Working Noise
On the maximum speed level, the HP07 and HP09 generate a noise level of about 62 decibels (dB). But with the integrated automatic mode, both devices only run as fast and therefore as loud as they need to achieve the desired air quality.
Once pollution levels in your room are back to a healthy standard, the speed gets adjusted accordingly. During the night, you can use sleep mode to limit the maximum speed to Level 4 out of a possible 10 and dim the display (see below).
Winner: Draw
Up to 62 dB
Up to 62 dB
Sensors & Display
A particulate sensor, gas sensor, and humidity and temperature sensor constantly provide the HP07 and HP09 with all the data needed to run in automatic mode. The HP09 comes with an additional fourth sensor that allows it to detect formaldehyde.
In both devices, a built-in LCD screen displays real-time information about the indoor air quality including the current levels of PM 2.5, PM 10, NO2, VOCs, the temperature, and filter life. The same data can also be viewed on your smartphone (see below).
Winner: HP09
Yes / LCD
Yes / LCD
Connectivity & Compatibility
There are three ways to interact with the HP07 and HP09. First, there is a remote that you can use to turn the machine on and off, change speed levels, switch between heating and cooling, change the operating mode, and more.
Next, you can also connect your air purifier with your smartphone using your Wi-Fi connection and then use the Dyson Link app to monitor and control your device. Lastly, both the HP07 and HP09 also support voice control.
Winner: Draw
Yes / Amazon Alexa, Apple Siri, Google Home
Yes / Amazon Alexa, Apple Siri, Google Home
Weight & Dimensions
In the final round of this Dyson HP07 vs HP09 comparison, we will have a quick look at the weight and dimensions of both devices. With a base diameter of 205 mm (8.1 in), the HP07 takes up slightly less space than the HP09. Both air purifiers are identical when it comes to height and weight.
Winner: HP07
205 x 205 x 764 mm, 5.5 kg
248 x 248 x 764 mm, 5.5 kg
Conclusion: Dyson HP07 vs HP09 – Which is the Better Air Purifier?
Common sources for formaldehyde include furniture, fireplaces and wood-burning stoves, or DIY items such as paint and varnishes. If that describes your home or workplace, you might want to take a closer look at the Dyson Purifier Hot+Cool Formaldehyde HP09.
Otherwise, save yourself some money and go with the Dyson Purifier Hot+Cool HP07. It is almost identical to its successor, including important buying criteria such as the coverage area, airflow per second, and connectivity features.
Dyson HP07
Dyson HP09
Frequently Asked Questions
Does Dyson HP07 filter formaldehyde?
While the Dyson HP07 captures gases using activated carbon, it does not filter formaldehyde. The Dyson HP09 is the first model of the HP series that is capable of doing so.
Is Dyson HP09 worth it?
If you are surrounded by common sources of formaldehyde such as furniture, a fireplace or wood-burning stove, or use DIY items including paint and varnishes, an investment in the Dyson HP09 might well be worth it.