Dyson Purifier Hot+Cool Formaldehyde (HP09)

The Dyson Purifier Hot+Cool Formaldehyde (HP09) is a multi-function air treatment appliance designed for year-round indoor climate management. It combines an electric ceramic fan heater, a cooling fan, and full-machine HEPA H13 purification in a single freestanding unit. According to Dyson Australia, the HP09 incorporates a dedicated solid-state sensor and a catalytic filter that continuously breaks down formaldehyde molecules into water and carbon dioxide without requiring replacement. The appliance also utilises a combined HEPA and activated carbon filter to trap 99.95% of fine particles down to 0.1 microns, including dust, pollen, and bushfire smoke particles. Airflow can be directed forwards for personal cooling or backwards through a diffused mode to maintain air purification without a cooling draught.

Who it suits

This appliance suits apartment dwellers and homeowners who want to save floor space by replacing separate heater, fan, and air purifier units with a single device. It is practical for households undergoing renovations, moving into new builds, or assembling flat-pack furniture, where building adhesives and paints can release formaldehyde and volatile organic compounds. Families seeking room-level heating will find the built-in thermostat useful, as Dyson states the unit automatically stops heating once your target temperature is reached to avoid unnecessary power consumption.

However, users invested in Apple HomeKit or Matter smart-home ecosystems should note that the HP09 does not integrate natively with either standard, relying instead on Siri Shortcuts or community home-automation platforms. Households looking to warm large, open-plan living areas should also look elsewhere, as portable fan heaters are designed for localised zone heating rather than replacing fixed, whole-home systems.

Australian notes

The HP09 is supplied with an Australian three-pin plug suited to standard 220–240V, 50Hz wall outlets. Because the ceramic heating element draws up to 2,250 watts at peak output, Dyson advises plugging the unit directly into a dedicated wall socket rather than using power boards or extension leads; consult your state's electrical safety regulator for guidelines on running high-wattage portable heaters safely. For renters, the freestanding design needs no installation or property modifications.

Smart connectivity runs through the MyDyson app using 2.4GHz or 5GHz Wi-Fi. The machine connects with Google Assistant and Amazon Alexa, but Apple users are limited to voice control configured through Siri Shortcuts. For local support, the HP09 includes a two-year Dyson Australia warranty alongside consumer guarantees provided under Australian Consumer Law. Note that the magnetic remote control uses a lithium coin cell battery, which complies with mandatory Australian button battery safety standards.