Introduction
The Dyson Purifier Hot+Cool Formaldehyde™ HP09 is an advanced air treatment device designed to purify, heat, and cool your indoor environment. It features intelligent sensing capabilities and a fully sealed filtration system to capture pollutants, including formaldehyde. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your device.
Key Features:
- Multifunctional: Intelligently purifies, cools, and heats.
- Advanced Filtration: Automatically senses, captures, and traps pollutants for cleaner air.
- Formaldehyde Detection: Specifically engineered to detect and destroy formaldehyde.
Setup
Follow these steps to set up your Dyson Purifier Hot+Cool Formaldehyde™ HP09:
- Unboxing: Carefully remove all components from the packaging. Ensure all parts, including the main unit, remote control, and filters, are present.
- Filter Installation: The device comes with pre-installed filters. If replacing, ensure the HEPA and activated carbon filters are correctly seated in their respective compartments. Refer to the filter replacement section for detailed instructions.
- Placement: Place the purifier on a stable, level surface, ensuring adequate clearance around the device for optimal airflow. Avoid placing it directly against walls or in corners.
- Power Connection: Plug the power cord into a suitable electrical outlet. The device will enter standby mode.

Image: The Dyson Purifier Hot+Cool Formaldehyde™ HP09, illustrating its sleek design and compact footprint.
Operating Instructions
Your Dyson Purifier Hot+Cool Formaldehyde™ HP09 can be operated using the included remote control or the Dyson Link app (if connected).
- Power On/Off: Press the power button ( ① ) on the remote control or the device to turn it on or off.
- Fan Speed Adjustment: Use the '+' and '-' buttons on the remote to increase or decrease the airflow speed. The current speed level will be displayed on the screen.
- Temperature Control (Heating/Cooling):
- To activate heating, press the red '+' button. Adjust the target temperature using the '+' and '-' buttons.
- To activate cooling, press the blue '-' button. The device will blow unheated air.
- Oscillation: Press the oscillation button ( ↻ ) to enable or disable the oscillation feature. You can typically choose from various oscillation angles (e.g., 45°, 90°, 180°, 350°) to distribute air throughout the room.
- Night Mode: Activate Night mode ( ☽ ) for quiet operation and a dimmed display, ideal for use during sleep.
- Information Display: Press the 'i' button ( i ) to cycle through various air quality metrics and device information displayed on the LCD screen. This includes PM2.5, PM10, VOCs, NO2, and Formaldehyde levels, as well as temperature and humidity.
- Remote Control Storage: The remote control is magnetic and can be conveniently stored on top of the main unit when not in use.
Maintenance
Regular maintenance ensures optimal performance and longevity of your Dyson Purifier Hot+Cool Formaldehyde™ HP09.
- Filter Replacement: The device will notify you when the filters need replacing. Filter life varies based on usage and air quality. Genuine Dyson filters are recommended for continued performance. Instructions for replacement are typically found in the device's display or the Dyson Link app.
- Cleaning:
- Wipe the exterior of the device with a soft, dry cloth.
- Do not use detergents or polishes as these may damage the surface.
- Ensure the air intake holes are free from dust and debris.
Troubleshooting
If you encounter issues with your Dyson Purifier Hot+Cool Formaldehyde™ HP09, try the following common solutions:
- No Power: Check if the power cord is securely plugged into both the device and the electrical outlet. Ensure the outlet is functional.
- No Airflow/Weak Airflow: Verify that the fan speed is set appropriately. Check if the filters are correctly installed and not excessively dirty. Clean any obstructions from the air intake.
- Remote Control Not Working: Ensure there are no obstructions between the remote and the device. Check and replace the remote control battery if necessary.
- Inaccurate Air Quality Readings: Ensure the device is placed in an open area, away from direct drafts or strong odors that might interfere with sensors. Clean the sensor inlet if it appears dusty.
- Device Not Heating/Cooling: Confirm the correct mode (heating or cooling) is selected and the target temperature is set appropriately.
For persistent issues, please refer to the Warranty & Support section.
Specifications
| Specification | Detail |
|---|---|
| Color | White/Gold |
| Brand | Dyson |
| Product Dimensions | 5.12"D x 5.12"W x 30"H |
| Floor Area | 290.0 |
| Specification Met | ISO |
| Controller Type | Button Control |
| UPC | 885609022321 |
| Manufacturer | Dyson |
| Item Weight | 12.6 pounds |
| ASIN | B099WMQ5R6 |
| Item model number | 497044-01 |
| Assembly required | No |
| Number of pieces | 1 |
| Batteries required | No |
| Included Components | Dyson Purifier Hot+Cool Formaldehyde™ HP09 |
Warranty & Support
Your Dyson Purifier Hot+Cool Formaldehyde™ HP09 comes with a manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation included with your product or visit the official Dyson website.
Protection Plans:
- 3-Year Protection Plan: Available for $69.99
- 4-Year Protection Plan: Available for $93.99
For technical support, troubleshooting assistance, or to purchase genuine replacement parts and accessories, please contact Dyson Customer Service or visit their official support portal. Keep your product's serial number handy for faster service.





