# Dreo HM311S Ultrasonic Humidifier, 4 L, Grey

**URL:** https://aio.lv/en/product--oem-587324--12409337
**Data updated:** 2026-05-09 15:47 (EEST)
**Category:** Air humidifiers
**Manufacturer:** OEM
**Manufacturer code:** 587324
**EAN:** 0810181280258
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 80.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 66.93 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--oem-587324--12409337

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The Dreo HM311S is a compact tabletop ultrasonic humidifier featuring a 4-liter water tank capacity. Designed for efficient indoor air moisture control, this grey unit includes an integrated LED display for easy monitoring. It provides reliable performance for maintaining optimal humidity levels in residential or office spaces, ensuring a comfortable environment throughout the day.

## Long description

The Dreo HM311S is a compact tabletop ultrasonic humidifier designed to maintain optimal indoor air moisture levels. With a 4-liter water tank capacity, this device provides consistent performance for residential or office environments, helping to ensure a comfortable atmosphere. The unit features a clear LED display for monitoring settings and a sleek grey finish that fits well in various interior spaces.
Advantages
This ultrasonic humidifier offers efficient moisture distribution, making it effective for improving air quality in smaller rooms. Its tabletop design ensures it occupies minimal space while providing a substantial 4-liter capacity, which reduces the frequency of refills. The integrated LED display allows for straightforward operation and monitoring of the device's status, ensuring user-friendly control over indoor humidity levels.
Suitable for
Maintaining humidity in bedrooms or living rooms
Improving air comfort in home offices
Creating a balanced environment in small indoor spaces
When it may not be suitable
This device may not be suitable for very large open-plan areas or industrial spaces where a higher moisture output is required to achieve noticeable changes in humidity. It is also not intended for outdoor use or in environments with extreme temperature fluctuations.
Key specifications
Water tank capacity: 4 L
Weight: 1.4 kg
Display type: LED
Placement: Tabletop
Dimensions: 280 mm x 140 mm x 258 mm
How to use
To operate the Dreo HM311S, place the unit on a flat, stable surface. Fill the 4-liter water tank with clean water, ensuring it is securely seated on the base. Connect the device to a power source and use the controls to select your preferred settings. The LED display will indicate the current status of the humidifier as it begins to release a fine mist into the air.
What to consider before purchase
Ensure you have adequate table space for the unit dimensions
Check the room size to confirm the 4-liter capacity meets your needs
Verify access to a power outlet near the intended placement area
Usage recommendations
Regularly clean the water tank and the ultrasonic transducer to prevent mineral buildup and ensure the device operates efficiently and hygienically. Use distilled or filtered water if your local tap water has a high mineral content to reduce white dust accumulation.

## Specifications

### Technical details

| Feature | Value |
|---|---|
| Noise level | 28 dB |
| Water tank capacity | 4 L |
| Control type | Touch |
| Suitable for room area up to | 28 m² |
| Air purification capability | Yes |
| Operating time | 36 h |
| Smartphone/tablet remote support | Yes |
| Automatic mode | Yes |
| Air particle sensor | Yes |
| Timer | Yes |

### Design

| Feature | Value |
|---|---|
| Product colour | Grey |
| Placement | Table |
| Built-in display | Yes |
| Display type | LED |

### Packaging content

| Feature | Value |
|---|---|
| Quantity | 1 |
| Manual | Yes |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 1.4 kg |
| Height | 258 mm |
| Width | 280 mm |
| Depth | 140 mm |

## FAQ

### How much does the Dreo HM311S Ultrasonic Humidifier 4L cost, and is it available for purchase?

The price is 80.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 21 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 06.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Dreo HM311S Ultrasonic Humidifier 4L be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All OEM products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized OEM service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: water tank capacity, weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/12409337/68709253_large.webp