The room from where this article is being written is warm for one reason and one reason only; the Dyson AM09 Hot+Cool. When it is 40°F outside, like it is right now, it tends to be not much warmer inside this old house. You see, back in the 1860s, when this house was built, the idea of insulating a domicile, especially in Northern California, was an idea that didn’t happen. Walls, roof, door, and a window if you were lucky.
A little over a month ago, when the introductory article was being written, days would start around the 50°F mark but almost always reach the mid-80s by the middle of the afternoon. Back then, we got to experience the brilliant cooling effect of the air multiplier loop. This loop is the main feature of the AM09 (and all Dyson fans, heaters, humidifiers, and air purifiers) and it is one of the major things that differentiates this fan/heater from all the others out there and the importance of this loop cannot be understated.
Thanks to Dyson’s Jet Focus Technology, this loop delivers two distinct airflow patterns. The 2.5mm rear annular aperture delivers a focused stream of air which is especially nice for when rapid, focused heating or cooling is desired. The introduction of a second jet of air pushed out through the front aperture, which flows out over a 45° ramp, broadens the overall angle of the airstream, delivering a powerful yet diffuse airflow which makes for rapid, yet indirect, heating (or cooling).
Hidden away on the inside is even more engineering wizardry. The core of the heater part of this fan lives in the vertical section of the air multiplying loop. Thermostatically self-regulating PTC Ceramic plates heat the air as it is forced through and immediately out of the loop. This means that there’s just a few millimeters between where the air is heated and where it enters the room. This also means that there is very little thermal loss between the heater and that which is being heated which is just one of the many efficiencies of the Dyson AM09 Hot+Cool.
Another efficiency of the Hot+Cool comes from its precision “intelligent” thermostat. This thermostat monitors the room and helps the AM09 maintain the temperature dialed in by the remote control. Once the temperature of the room is reached, the unit goes into monitor mode and only eases itself into service as needed.
Lastly, this review would not be complete without mentioning the remote control of the AM09. It needs to be mentioned because without it the AM09 is not much more than a handsome piece of modern sculpture. On, off, and target temperature can be controlled via the standby button on the base of the fan, but airflow, diffused and personal heating modes, oscillation function and sleep timer controls cannot be operated without the remote control. So, that kind of tells you how multi-function this multifunction remote control is. With ten simple, easy-to-understand buttons, comfort and control is just a click away.
For more information about the Dyson AM09 Hot+Cool, click here.
**Full disclosure: This fan/heater was provided at no cost for editorial consideration, to think otherwise would be silly. Also…headline gently borrowed from Clutch.