A real alternative to conventional inserts and traditional fireplaces, 3D cold-flame steam fireplaces have unmatched advantages. In particular, they make it possible to overcome the main constraints of installation, operation and maintenance encountered in fireplaces that use wood or gas. It is a subtle fusion of three components, namely, ultra-fine water vapor, the light emitted by the RGB LED, and the action of the fan and the heating wire, making it possible to obtain a simulated hand-touchable colored flame. Ultrasonic waves are produced by "transducers" (or sprayers), which are mechanical waves that will vibrate (silence) water and convert it into ultra-fine water vapor. Under the action of the fan, the heating wire generates a temperature that can be touched by the hand. After heating, the water vapor is radiated into the surrounding air and illuminated by LEDs. Ultra-fine water vapor (only a few microns) is immediately absorbed by the surrounding air. Water vapor will not condense and will not generate moisture on adjacent walls. This is commonly referred to as dry water vapor.