The Dyson HP11 and Dyson AM09 fans are expertly designed to make homes more comfortable throughout the year. Both models can heat rooms in cold weather and provide cooling airflow in warmer months. They also share Dyson’s bladeless design, which improves safety and gives them a clean, modern appearance. However, each model has different features and benefits that suit different needs.
The Dyson HP11 Hot + Cool Air Purifier is a three-in-one device. It works as a heater, a cooling fan, and an air purifier. This makes it especially useful for people who want to control room temperature while also improving air quality. In winter, the HP11 provides steady and even heating, helping to warm bedrooms, living rooms, and home offices. In summer, it works as a fan, circulating cool air to make rooms feel more comfortable without the use of air conditioning.


One of the main benefits of the HP11 is its air purification function. The built-in filter captures very small particles such as dust, pollen, pet hair, and other pollutants from the air. This helps to create a cleaner indoor environment and can be helpful for people who suffer from allergies, asthma, or breathing problems. The purifier runs continuously, meaning the air in the room is cleaned whether the heater or fan is switched on or not.
The HP11 uses Dyson’s Air Multiplier™ technology to spread air evenly across the room. This prevents uncomfortable hot or cold spots and helps maintain a consistent temperature. It also includes smart features that allow users to control settings through a mobile app. This makes it easy to adjust the temperature, check air quality, and set timers, even when not in the room. The bladeless design means there are no exposed moving parts or heating elements, making it safer for homes with children or pets. It is also easy to clean, as there are no grills or blades to collect dust.
The Dyson AM09 Hot + Cool Fan Heater has a simpler purpose. It is designed mainly for heating and cooling, without the air purification features found in the HP11. The AM09 is ideal for people who want a reliable and efficient way to warm up a room quickly in winter or cool down in summer. It works well in bedrooms, living rooms, or workspaces and can be used alongside central heating to provide extra warmth when needed.

A key benefit of the AM09 is its fast heating performance. It delivers warm air quickly and can be directed towards a specific area, making it useful for personal heating. The built-in thermostat measures the room temperature and helps maintain it at a comfortable level. Once the selected temperature is reached, the heater can switch off automatically, which may help reduce energy use compared to traditional fan heaters.
Like the HP11, the AM09 uses Air Multiplier™ technology to produce smooth airflow. It is quieter than many standard heaters and fans, which makes it suitable for use at night or in quiet environments such as bedrooms and offices. The device also includes useful features such as oscillation, a tilt function, a remote control, and a sleep timer. These features allow users to control the direction of airflow and set the heater to turn off automatically, improving comfort and convenience.
In conclusion, both the Dyson HP11 and Dyson AM09 offer effective heating and cooling solutions with a strong focus on safety and ease of use. The HP11 is best suited for users who want a multi-purpose fan that also improves indoor air quality, while the AM09 is ideal for those who need straightforward and efficient heating and cooling. Together, these products show how Dyson combines innovative technology with practical design to improve everyday home comfort.