Phantasmic HelpPhantasmic HelpA Macintosh computer usually contains one or more cooling fans and a number of sensors that measure the temperature of various components of the hardware. Normally the fan operation is controlled by the system software via its firmware.
Phantasmic is a utility program for macOS that monitors and optionally controls the system fans, overriding the default behaviour of the system software.
On launching, it installs itself in the System Menubar, where it displays the temperature of the currently selected sensor and speed of the currently selected fan.
When clicked the menu appears as shown below:
The current values, as displayed in the menubar, along with the fan and sensor names are shown as the first 2 items in the menu, disabled but visible.
A small window showing credits and version numbers for Phantasmic
A preferences dialog allowing you to set global parameters for Phantasmic
A window that lists the fans and temperature sensors present in the computer. This is the main interface and enables you to asoociate a fan with a temperature sensor, optionally setting values to control the speed of the fan.
A window that displays a graph of the fan speed vs the temperature of the selected fan and temperature sensor.
A window whereby you can make a donation to support development of Phantasmic
Check to see if a more recent release of Phantasmic is available.
This documentation
Launch your web browser and go to the Phantasmic download page.
Remove all Phantasmic settings that have been modified from their defaults, reset the system fans to their default system settings and relaunch Phantasmic.