Inside the MyDyson app, the HP09 screen shows both indoor and outdoor air quality data at a glance. At the top of the screen are your local outdoor temperature and humidity readings and the overall outdoor AQI (good, moderate, unhealthy for sensitive groups, unhealthy, very unhealthy, or hazardous), based on your location. Each outdoor AQI level has a distinctive color, with green being the best and dark red the worst.
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The screen consists mainly of a graphic of a house with a picture of the purifier, its name, and glanceable data from its sensors, including the current indoor air quality level, humidity level, temperature, and the most prominent type of pollutant. Indoor air quality is represented with slightly different color coding than outdoor air quality: green is good, yellow is fair, orange is poor, red is very poor, dark red is extremely poor, and purple is severe.
Tap the picture of the purifier to open a control screen where you can turn the device on and off, enable cooling, enable auto mode which adjusts the fan speed depending on the current air quality, change fan speeds (1 to 10), enable oscillation (45, 90 180, 350 degrees), set an off timer (15 minutes to 9 hours), and enable night mode, which dims the LED screen and runs at the lowest fan setting. A direction setting lets you toggle between front and back airflow.
Back on the device screen and below the picture of the purifier are buttons for power, auto mode, fan speed, and oscillation, as well as a remote control button that opens the same aforementioned control screen. Swipe up to view historical charts for general air quality, PM2.5, PM10, HCOC, VOC, NO2, temperature, and humidity readings.
(Credit: Dyson/PCMag)
The HP09 comes with a small gold magnetic remote that you can magnetically attach to the top of the purifier. The remote also has power, oscillation, fan speed, auto mode, air direction, timer, and night mode buttons, an up/down heat button that turns on the warm air function and lets you set a target temperature, and an information button that changes what is shown on the onboard display. Tap this button to scroll through AQI, PM2.5, PM10, VOC, NO2, HCHO, temperature, and humidity readings.
For safety reasons, you can’t control the HP09’s heating using the mobile app. You must instead use the remote to enable heating and adjust temperature settings.
