The Dainichi Plus HD-9017(W) is a hybrid (heating + vaporization) humidifier released by Dainichi in Japan on September 1, 2017. It is highly rated for its high humidification capacity and quiet operation. Key Features and Specifications: Method: It employs a hybrid system (warm air vaporization/vaporization). When the humidity is low, it heats with a heater for quick humidification, and when the set humidity is reached, it operates in vaporization mode to conserve power. Applicable Floor Area: This is a powerful model that can handle up to 24 tatami mats (approx. 40 sq meters) in prefabricated Western-style rooms and up to 14.5 tatami mats (approx. 24 sq meters) in wooden Japanese-style rooms. Quietness: It achieves industry-leading quietness, with a minimum operating noise level of 15dB, making it suitable for use while sleeping. Maintenance: Antibacterial treatment is applied to suppress the growth of bacteria in the tray. The antibacterial vaporization filter replacement目安 (guide) is approximately 2 years. Functions: It is equipped with functions such as humidity settings (50%, 60%, 70%), on/off timer (2, 4, 6, 8 hours), eco mode, and child lock. Size and Weight: Width 375 x Height 375 x Depth 210 mm, weight approximately 5.3 kg. Operation confirmed.