The current (V2) version of the iQ Plus has a silent TRIAC thermostat, which means it makes no sound when it switches the heat on or off. Button pressing is silent except for the standby button which beeps. App control is silent except for switching between standby and on, which also produces the standby beep. There is no beep when the power switch is pressed.
The old (V1) version of the iQ Plus beeps when any button is pressed and when any command is received from the app. It also beeps when turned on at power switch.
As with all heaters, the iQ Plus may make expansion noises when warming / cooling.
The old (V1) version of the iQ Plus beeps when any button is pressed and when any command is received from the app. It also beeps when turned on at power switch.
As with all heaters, the iQ Plus may make expansion noises when warming / cooling.