The Dyson AM09 Hot + Cool is a premium fan heater that combines 1,500W heating with a bladeless cooling-fan mode. Dyson still maintains the AM09 product and support pages, but the model is currently out of stock direct from Dyson in the U.S., so this review is especially useful for comparing retailer stock, used or refurbished units and newer Dyson options. For a direct side-by-side decision, see Dyson vs Lasko Space Heater Comparison.
The AM09 can make you feel cooler by moving air, but it is not an air conditioner: fan mode does not lower room temperature through refrigeration. For heating, Jet Focus directs a narrower stream of warm air while Diffused mode spreads airflow more broadly.
If you are searching Dyson AM09 review, Dyson AM09 fan heater review, is the Dyson AM09 heat any good, or does Dyson AM09 actually cool, this guide focuses on those practical questions instead of treating the design alone as a reason to buy.
TL;DR
- The Dyson AM09 Hot + Cool is a premium fan heater that combines 1,500W heating with a bladeless cooling-fan mode.
- Fan mode circulates air and can make you feel cooler, but the AM09 is not an air conditioner and does not refrigerate the room.
- Dyson currently lists the AM09 as out of stock in the U.S.; compare current retailer stock with the newer Dyson Hot+Cool HF1 Rapid React before paying a premium.
- The AM09 makes the most sense when you value year-round fan use, compact design and focused airflow more than low purchase price.
Dyson AM09 Review: Quick Verdict
| Feature | Assessment |
| Heating Speed | Exceptional for small to medium rooms. |
| Cooling Power | Good as a fan; not an air conditioner replacement. |
| Safety Rating | Top tier with bladeless design and tip-over shutoff. |
| Noise Level | Very quiet at low speeds; noticeable at speed 10. |
| Ease of Use | High, provided you do not lose the remote. |
| Value for Money | A luxury purchase that pays off in safety and style. |
Dyson AM09 Specifications and Design
The Dyson AM09 belongs to the Air Multiplier family. It is a dual-purpose machine. It acts as a ceramic heater and a high-velocity fan. It stands just under two feet tall. It has a small footprint. This makes it easy to place on a desk or a floor. The build quality feels premium. It uses high-grade plastics that stay cool to the touch even when the heater is on full blast. The machine comes in several color schemes. The white and silver look is classic. The black and nickel version is more industrial.
The dimensions are compact for a tower design. It is 595 mm tall. The base is 204 mm wide. It weighs 2.68 kilograms. This makes it very portable. You can move it from your home office to your bedroom with one hand. The cord is 1.8 meters long. It is thick and feels durable.
| Technical Attribute | Detail |
| Max Power Output | 1500 to 2000 Watts. |
| Airflow Capacity | 186 to 190 liters per second. |
| Temperature Range | 0°C to 37°C (32°F to 99°F). |
| Oscillation Angle | 70 degrees. |
| Timer Settings | 15 minutes to 9 hours. |
| Safety Features | Tip-over shutoff and overheat protection. |
The core of the machine is the Air Multiplier technology. It draws in air from the base. It accelerates that air through a narrow slit in the loop. This creates a powerful stream of air. It pulls in the air behind it and around it. This is why it moves so much air without visible blades. It uses ceramic plates to heat that air. These plates are hidden inside. You never have to worry about hair or dust touching a hot wire.
Dyson AM09 Heating and Cooling Features
Testing the AM09 reveals its strengths and its quirks. The most famous feature is Jet Focus. This was the big upgrade from the older AM05 model. It gives the user control over how the air spreads.
Jet Focus and Diffused Modes
Acoustic Engineering
The Thermostat and Sleep Timer
Does the Dyson AM09 Heat and Cool Well?
A space heater is only as good as its performance on a freezing morning. The AM09 heats up quickly. Within seconds of turning it on, the air coming out is hot.
Heating Efficiency
Summer Cooling
Maintenance and the H2 Error Code
Every product has a weakness. For the Dyson AM09, that weakness is dust. The machine does not have a filter. This is different from the Dyson Purifier models. Because there is no filter, the internal parts can get dusty over time.
Understanding the H2 Code
Cleaning Routine
Dyson AM09 Electricity Use
Is the Dyson AM09 energy efficient? All electric space heaters use roughly the same amount of power to create heat. This is usually 1500 Watts. The Dyson is not “magically” more efficient at creating heat. But it is more efficient at managing it.
The thermostat ensures the machine only runs when needed. It does not stay on full power all night if the room is already warm. Some users have seen a 20% drop in their heating bills when they use the Dyson for spot heating instead of turning up the central heat for the whole house.
| Mode | Wattage | Est. Cost per Hour (at $0.17/kWh) |
| Active Heating | 1500 – 2000 W | $0.25 – $0.34. |
| Fan Only | 30 – 40 W | Less than $0.01. |
| Standby | < 1 W | Negligible. |
If you use it in a small office for 8 hours a day, it might cost about $2 per day. This is a reasonable price for comfort. But it is not a “budget” way to heat a whole home. It works best as a secondary heat source.
Who Should Buy the Dyson AM09?
The Dyson AM09 is a specific tool for specific people. It is not for everyone.
Parents and Pet Owners If you have a toddler who loves to touch things, this is the heater for you. There are no blades. There is no hot metal grille. If it gets knocked over, it turns off instantly. It is the safest choice on the market.
Home Office Workers If you spend eight hours a day in a small room, you want something that looks good and stays quiet. The AM09 fits perfectly under or on a desk. The Jet Focus mode keeps you warm without heating the entire house.
Apartment Dwellers When space is tight, you do not want to store extra appliances. Having one machine that handles both summer and winter is a huge space-saver.
Light Sleepers If you need a bit of warmth but hate the clatter of a cheap fan, the AM09 is a dream. The low settings are practically silent.
Dyson AM09 Review: Final Verdict
The Dyson AM09 Hot + Cool is an impressive piece of engineering. It successfully combines two appliances into one beautiful package. The heating performance is rapid and effective for bedrooms and offices. The safety features are second to none, making it our top recommendation for homes with small children or pets.
However, you must be prepared for the price and the maintenance. You are paying a premium for the design and the bladeless technology. To make this investment last, you cannot just set it and forget it. You need to keep the base clean and blow it out with compressed air occasionally to avoid the H2 error.
If you want a machine that works all year, looks fantastic, and keeps your family safe, the Dyson AM09 is worth every penny. It is a high-end solution for a high-end home. If you just want to stop shivering and do not mind a noisy fan or a clunky design, there are cheaper ways to get warm. But for the “best in class” experience, Dyson still holds the crown.
Frequently Asked Questions
Can I leave the Dyson AM09 on all night while I sleep?
No portable space heater should be treated as safe to leave running while you sleep or when it is unattended. CPSC recommends turning portable heaters off when sleeping, plugging electric heaters directly into a wall outlet, and keeping them at least three feet from bedding, curtains, furniture, and other combustible materials.
Does it really cool the air like an AC unit?
No. This is a common point of confusion. The AM09 is a high-velocity fan. It moves air quickly to create a cooling effect on your skin. It does not use refrigerant or a compressor to lower the room’s actual temperature.
How do I fix the H2 error code?
First, try a hard reset. Unplug the unit for at least 60 seconds and plug it back in. If that does not work, it is likely a dust issue. Use a can of compressed air to blow out the intake holes at the base of the machine. This usually clears the blockage and restores function.
Why does the remote have a magnet?
The remote is curved and magnetized so it can sit securely on top of the loop amplifier. This is designed to help you not lose it, as the remote is very small and the machine depends on it for most features.
Can I use the Dyson AM09 in a bathroom?
It is not recommended. The AM09 is an indoor electrical appliance. Using it in high-humidity areas like a bathroom can damage the internal components or create a safety risk. It is best suited for dry living spaces like bedrooms and offices.
Is it loud?
At low speeds (1-4), it is very quiet and suitable for a nursery or bedroom. At high speeds (8-10), you will definitely hear the rushing air. It is a smooth “whoosh” sound rather than a mechanical rattle, but it can be distracting if you are trying to hear a quiet conversation.
