AM04 Fan Heater White/Silver
Dyson AM04 White Silver Fan Heater

Contact us

The Dyson Helpline is available during the following times (CST):

Monday – Friday: 8am – 8pm

Saturday: 9am – 6pm

Closed on Sunday

Please note our US Helpline will close at 1pm on Saturday, October 10th for planned maintenance. Please email us at Our Digital Support team responds to emails 24 hours a day.

  • 1-866-MY-DYSON
  • Dyson Inc. 600 W. Chicago Ave, Suite 275, Chicago, IL

My machine is not heating

On first use, the heater will default to a temperature 1°F higher than the current room temperature. Thereafter, the heater will remember the last target temperature set.

The heater will not operate unless the target temperature is above the room temperature.

  • Switch the machine on.
  • Increase the target temperature above the temperature of the room.
diagram showing the temperature being increased

Has this resolved the problem?