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Support for your Pure Hot+Cool purifying fan Dyson Pure Hot+Cool™ HP04 purifying heater + fan

Getting started

Still from video

Setting up your machine

Connecting your machine

The Dyson Link app allows you to control your purifier fan heater, direct from your device.¹ Follow three simple steps to connect the app to your machine.

Download the Dyson Link app.

Step 2
Hold your device next to your machine's display. This will allow your machine to detect your mobile device.

Step 3
Press the power button on your machine to activate the pairing process. Then follow the on-screen instructions to complete connection set-up. 

Using your machine

Understanding your LCD screen's icons

The icons on the built-in LCD screen show you which pollutants are present, reporting them in real time. They also tell you about temperature, humidity and filter life.

Indoor Air Quality Index (AQI)
Shows your air quality over the last 12 seconds, or over the last 24 hours. 

Particulate matter PM2.5 
Shows microscopic particles smaller than 2.5 microns, including smoke, bacteria and allergens.

Particulate matter PM10
Shows particles smaller than 10 microns, including pollen, dust and pet dander.

Volatile Organic Compounds (VOCs)
Shows gases released from a wide range of sources, such as aerosol sprays and air fresheners. They include formaldehyde and benzene, household fumes and odours.

Nitrogen Dioxide (NO2)
Shows oxidizing gases such as NO2, released by combustion. Includes cigarette smoke, car emissions, candles and gas stoves. 

Filter life
Shows how much filter life remains on both the HEPA and active carbon filters. So you know which one to replace and when. 

Understanding pollutant levels

When a pollutant causes the air quality to drop, the relevant icon will appear on the LCD screen. The colored bar on the left of the screen will indicate how much of the pollutant is present, and will continually update as your machine purifies the air. 

When the green section of the colored bar is highlighted, your machine is detecting a very low level of the type of pollutant.

When the yellow section of the colored bar is highlighted, your machine is detecting a moderate level of the type of pollutant. 

When the orange section of the colored bar is highlighted, your machine is detecting a high level of the type of pollutant. 

Very poor
When the red section of the colored bar is highlighted, your machine is detecting a very high level of the type of pollutant. 

Using hot, cool and auto modes

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Oscillation and airflow
Watch our video guide on how to customize the angle, speed and direction of airflow. 

7-day scheduling
Set when you want your machine to be on and off, up to seven days in advance, with the Dyson Link app.

Night-time mode
For the quiet settings and a dimmed screen, set your machine to Night-time mode using your remote control.

Sleep timer
Set a timer to turn your machine off for any time between 15 minutes and 9 hours, using your remote control. 

Voice control. All you have to do is ask.

Ask about the current activity of your purifier heating fan, or ask it to begin a new task. Check the Dyson Link app for examples of voice commands. 

Maintaining your machine

See how to monitor and replace the filters

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Tools to tackle more

Dyson Genuine Replacement Filter (DP04, TP04, HP04) #969048-01

Part No. 969048-01


Learn more

Inner carbon filter

Part No. 968708-04

Replacement inner carbon filter for your Dyson purifier.


Learn more

HEPA filter

Part No. 968707-04

Replacement HEPA filter for your Dyson purifier.


Learn more

Frequently asked questions

Should I change the fan settings in different seasons?

Increasing airflow will create a cooling effect using purified air, so you may find it beneficial to change your purifying fan's speed settings as the temperature changes. For personal cooling in summer, use settings 4-10. In colder periods, enable diffused mode. It projects air through the back of the machine, to avoid unwanted cooling.

Does the LED display stay on throughout the night?

If you're concerned by the brightness of your purifying fan's LED display, consider enabling Night-time mode using your remote control or the Dyson Link app. During operation, a small moon icon indicates that your purifier is on, but the main display turns off after 10 seconds to help avoid sleep disturbance.

How do I know when my purifying fan is in auto mode?

If auto mode is enabled, AUTO will be illuminated on your purifying fan's LED display. When your machine is purifying the air, AUTO will be in white. When the air in the room is clean, it will turn green and your purifying fan will remain idle until pollutant levels rise.

How long should my purifying fan be turned on for?

Your purifying fan's auto mode is designed to manage the air quality in your home without you having to operate the machine – so it's only on when it needs to be. If you or someone in your home suffer from allergies or respiratory illnesses, we particularly recommend using your machine's auto mode.

Where should I place my purifying fan?

Your purifying fan is engineered to purify single rooms, so you should use it where you spend the majority of your time at home. When placing the machine, make sure there is at least a few feet of clearance on all sides so that the air can circulate effectively.

Should I keep my windows open or closed?

Your purifying fan works most efficiently in a sealed environment – opening the windows can allow more pollutants to enter the air in your home, which means your machine will take longer to work.

Why Register? More perks.

Registration doesn't just give you Dyson's 2 or 5 year parts and labor warranty. Being a Dyson registered owner has even more perks:

Exclusive Savings Events

Registered owners save on future purchases. Receive up to 20% off purchases during 12 Owner Rewards Savings Events throughout the year.

Free Health Check

Reminders for free preventative maintenance checks at a Dyson Service Center near you.

First to know

Registered owners receive exclusive events and sneak peeks at our latest technology before anyone else.

VIP Hotline

Assistance from our U.S.-based team of Dyson experts, who are on hand to help through a dedicated VIP hotline, and online support 7 days a week.

Reviewer Program

Experience the latest technology in our invitation-only reviewer program.

Machine Information

Helpful tips to get the most out of your machine and keep it working at its best.

We don’t stop caring about our machines once they’re yours. Activating your parts and labor warranty allows us to give you a tailored, complementary, direct service for your machine. Even after your warranty has ended, we’ll still be on hand to help.

1Requires device to run app, Wi-Fi or mobile data, Bluetooth 4.0 support, and iOS version 10 or Android version 5 (or above). Standard data and messaging rates may apply.

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