The Coolest Portable Fireplace (Without the Dangerous Flames). Relax and cozy up by the faux-fire with this magnificent Fireplace Flame-Effect Humidifier. The innovative cold flame technology creates realistic visual effects of flames that can provide a soothing and relaxing atmosphere in any room. The humidifier uses ultrasonic frequencies to generate a fine mist that keeps the air moist and comfortable. It's the perfect fix for those suffering from dry skin, allergies, or respiratory problems.