Siroca (Chiyoda-ku, Tokyo) will release a Heated Ultrasonic Humidifier (加熱超音波式加湿器) on October 27, 2026. Ultrasonic humidifiers use less power and run more quietly than steam-type models, and this one adds a heater to release warm, fluffy mist into the room.
A Humidifier for the Dry Season
A humidifier is an essential item for dealing with dry indoor air in the coming months. Ultrasonic humidifiers in particular are quiet during operation and start humidifying with mist right away.
Siroca's new model keeps these advantages of the ultrasonic type while also paying attention to hygiene. Water warmed by the heater is turned into mist through high-frequency vibration at about 2.4 million times per second. The light, fine particles create a warm, fluffy mist that Siroca calls "さらっふわミスト" and that humidifies the room. The mist rises to a height of about 100 cm*1 and spreads efficiently through the room, which also helps reduce the wet floor around the unit that often occurs with ultrasonic humidifiers.
A silver ion unit in the water tank suppresses the growth of bacteria, and the water is heated to 75°C or higher by the heater before being turned into mist, so the mist released is 99.9% sanitized*2. The tank can also be removed and washed inside, making it easy to keep clean.
The body is compact, yet it offers a maximum humidification output of 400 mL/h. The 3.2 L large-capacity tank is filled directly from the top, so there is no need to carry it when refilling. The body also has a humidity display and an "Omakase Mode" (おまかせモード) that lets you choose a humidity of 50%, 60% or 70%, keeping the room in suitable condition while preventing over-humidification.
Two light colors are also included, so you can choose according to your mood or interior. With warm mist, strong diffusion and adjustable humidity settings, the humidifier is designed to make a living space comfortable, not just moisten the air, throughout the winter months.
Product Features
- Fine, light and fluffy "さらっふわミスト". Mist rising to about 100 cm helps prevent wet floors
- 99.9% sanitized mist and a washable water tank keep things clean at all times
- Compact, yet with a maximum humidification output of 400 mL/h. 3.2 L large-capacity tank and top-fill design mean no carrying
- A humidity display shows the "current humidity" around the unit, and the "Omakase Mode" lets you set your preferred humidity
- Two colors that blend into any interior, with selectable lights and aroma for added comfort
1. Fine, Light and Fluffy "さらっふわミスト". Mist Rising to About 100 cm Helps Prevent Wet Floors
The "さらっふわミスト" is made with a high frequency of 2.4 MHz (about 2.4 million vibrations per second), which makes the mist particles fine and light. Heating the water with the heater also raises the humidification output, and the warm, fluffy, smooth mist moisturizes the space.
The mist rises to a height of about 100 cm*1 and spreads over a wide area, humidifying every corner of the room while limiting the wet floor around the unit.
2. 99.9% Sanitized Mist and a Washable Water Tank Keep Things Clean at All Times
A silver ion unit in the water tank suppresses the growth of bacteria, and the water heated to 75°C or higher by the heater is turned into mist, releasing hygienic mist that is 99.9% sanitized*2. The water tank can be removed and washed by reaching a hand inside, so it can be kept clean and the room is humidified with clean mist.
3. Compact, Yet With a Maximum Humidification Output of 400 mL/h. 3.2 L Large-Capacity Tank and Top-Fill Design Mean No Carrying
The space-saving design measures about 20 cm in both width and depth, yet its maximum humidification output of 400 mL/h can also humidify a living room.
The unit has a 3.2 L large-capacity tank and can run continuously for up to 10 hours*3. Water can be poured straight in from above, so refilling does not require carrying the unit.
4. A Humidity Display Shows the "Current Humidity" Around the Unit, and the "Omakase Mode" Lets You Set Your Preferred Humidity
The humidity display shows the "current humidity" around the unit, serving as a guide for keeping the room in comfortable condition.
The unit also has an "Omakase Mode" (おまかせモード) with a choice of 50%, 60% or 70% humidity, which prevents unnecessary operation and supports a comfortable space.
5. Two Colors That Blend Into Any Interior, With Selectable Lights and Aroma for Added Comfort
The body comes in two colors, "White" and "Dark Gray," that blend into any interior.
The White model has the "Morning Light," inspired by the comfort of clear morning mist, and the Dark Gray model has the "Moonlight," which creates the warmth of a calming night. The light gently illuminates the room in four patterns, combining two colors (warm and cool) with two brightness levels, so you can choose to suit your mood or the atmosphere of the room. An aroma case is also included, so you can humidify the room with your favorite fragrance. The soft light and fragrance help create a comfortable space.
*1 Test conditions: room temperature 23°C, humidity 70%, continuous mode, "Strong" (Siroca's own testing)
*2 Measured on the mist coming out of the outlet. Based on results of testing by a third-party organization
*3 When used in continuous mode at "Medium" or "Low" (varies depending on usage and environment)
Siroca's Humidifier Series
Four models are available so you can choose according to your use case and preferences.
Product Overview
- Product name: Heated Ultrasonic Humidifier (加熱超音波式加湿器)
- Model number: SD-3HC131
- Colors: White, Dark Gray
- Release date: October 27, 2026
- Power supply: AC 100 V, 50/60 Hz
- Power consumption: 110 W
- Body size (approx.): 19 cm wide × 20.4 cm deep × 28 cm high
- Weight (approx.): 1.4 kg
- Cord length (approx.): 1.2 m
- Water tank capacity (approx.): 3.2 L
- Humidification output (approx.)*: 400 mL/h (continuous mode, "Strong")
- Continuous humidification time (approx.): 10 hours (continuous mode, "Medium" or "Low")
- Applicable floor area (guideline)*: about 7 tatami mats (11 m²) for a wooden Japanese-style room, about 11 tatami mats (18 m²) for a prefab Western-style room
- Included items: Body, scale adsorption pads (3), aroma case, instruction manual (warranty card)
- Product page: https://www.siroca.co.jp/product/hc-humidifier/
* At room temperature 20°C and humidity 30% (Siroca's own testing)
