---
product_id: 552692596
title: "4L Humidifiers for Bedroom, 36H Runtime, 28 dB Quiet, HM311"
brand: "dreo"
price: "R4274"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Dreo"
url: https://www.desertcart.co.za/products/552692596-4l-humidifiers-for-bedroom-36h-runtime-28-db-quiet-hm311
store_origin: ZA
region: South Africa
---

# 4L large tank for 36H runtime Ultra-quiet 28dB operation Supersized 40-inch mist outlet 4L Humidifiers for Bedroom, 36H Runtime, 28 dB Quiet, HM311

**Brand:** dreo
**Price:** R4274
**Availability:** ✅ In Stock

## Summary

> 💨 Elevate your air game—breathe fresher, live better, and never miss a mist!

## Quick Answers

- **What is this?** 4L Humidifiers for Bedroom, 36H Runtime, 28 dB Quiet, HM311 by dreo
- **How much does it cost?** R4274 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/552692596-4l-humidifiers-for-bedroom-36h-runtime-28-db-quiet-hm311)

## Best For

- dreo enthusiasts

## Why This Product

- Trusted dreo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **3-in-1 Wellness Hub:** Humidify, diffuse your favorite aromas, and set the mood with ambient nightlight—all in one sleek device.
- • **Whisper-Quiet Zen Mode:** Operating at just 28dB, it’s quieter than a whisper—perfect for bedrooms and nurseries.
- • **Breathe Big, Live Better:** Dual-intake and 40-inch mist outlet create powerful, fast-acting humidification for large rooms.
- • **Effortless Top-Fill Design:** Refill and clean without spills or hassle thanks to the modular, easy-access tank.
- • **Endless Comfort, No Interruptions:** 4L tank delivers up to 36 hours of continuous moisture—sleep soundly without refills.

## Overview

The DREO HM311 is a 4-liter ultrasonic humidifier designed for bedrooms and medium-sized rooms up to 300 sq ft. It offers up to 36 hours of continuous runtime with ultra-quiet 28dB operation, a powerful 40-inch mist outlet, and a user-friendly top-fill design. Equipped with adjustable humidity control, aroma diffusion, and ambient nightlight, it’s a stylish, multifunctional wellness device that keeps your air fresh and your space comfortable.

## Description

desertcart.com: DREO 4L Humidifiers for Bedroom, 36H Runtime, 28 dB Quiet, HM311 | Easy to Refill & Clean, BPA-Free, Nightlight, Supersized Air Humidifiers for Large Room, Baby Nurseries, Plants, Indoor : Home & Kitchen

Review: Good product - I was struggling to get rid of my cold, and my old vaporizer no longer seemed to be working. I bought this one mostly because it was on sale. The first night had me expelling my congestion right away. I honestly felt better by the second day of having this unit, and by the third I was completely recovered. I love how quiet it is, and it’s not overly complicated to use. Cleaning it is easy, too. Definitely worth the price.
Review: Prevent low humidity illness - Update 4/17/2026: This is a great unit, I highly recommend cleaning the entire unit weekly to at most every 2 weeks. As my lung infection started to clear up, it started to get worse again! My doctor asked if I cleaned the humidifier yet? I said, "No, not yet". I can't remember the exact phrase she used, "humidifier bacterial infection". I cleaned out the the humidifier and was surprised with the amount of fungal growth that was in the very bottom of the both humidifiers especially the larger unit, this one! It took me a long time to thoroughly clean it out! one week later it had fungus growth but not much and was so much easier and quicker to clean out. Use white vinegar soft cloth and soft brush to clean out the base. By the way don't get water into the electrical part of the filter. If water does get into this section do not turn on until it is completely dried out or you will kill the unit! Updated: 2/8/2026 Dreo humidifier has been working non stop since I purchased it. My room has not got up to 60% humidity yet, the highest it got was 50%. However it doesn't hold it there long. I does go back down to 20-25% especially at night. I am feeling better but not fully healed... so, I am going to buy another one to help get the humidity of my room up to a healthy level! original post: Just what I needed for my small room, a new room temperature and humidity monitor I discovered my room humidity was 20% and for several years I kept getting sick at the same time of year, now I know why! This unit took 24 hours to get my room Humidity up 45% that is how dry it was, I feel much better already! The unit is whisper quiet and you can see the cool mist blowing up and the cool blue LED light is nice. I had to fill the unit up 3 times so far, I did not wait until the until shut down from the lack of water. I highly recommend this unit, well worth the cost. Less expensive than a doctor's visit for Upper respiratory infection and all the complications from that!!!

## Features

- 𝟰𝗟 𝗟𝗮𝗿𝗴𝗲 𝗧𝗮𝗻𝗸 𝗳𝗼𝗿 𝗖𝗼𝗻𝘁𝗶𝗻𝘂𝗼𝘂𝘀 𝗖𝗼𝗺𝗳𝗼𝗿𝘁: Enjoy quiet sleep without congestion, coughing, or dry mouth, DREO baby humidifier's ultrasonic atomization brings noise down to 28dB, while its 4L tank provides up to 36 hours of moisture without the need to refill.
- 𝗡𝗲𝘅𝘁-𝗚𝗲𝗻 𝗛𝘂𝗺𝗶𝗱𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲: Powered by DREO's Dual-intake and 4-inch mist outlet design, this humidifier for large room creates a supersized mist of up to 40 inches tall for humidifying bedrooms, while bringing faster dry air relief to help you breathe easy and healthy.
- 𝗕𝗿𝗶𝗻𝗴 𝗙𝗿𝗲𝘀𝗵𝗻𝗲𝘀𝘀 𝗔𝗹𝗹-𝗮𝗿𝗼𝘂𝗻𝗱: Thanks to its high-frequency atomization process, DREO humidifiers for bedroom releases 5μm Ultrafine mist and lighter mist particles, allowing humidity to spread evenly across the room without wetting surfaces.
- 𝗘𝗮𝘀𝘆 𝗧𝗼𝗽 𝗙𝗶𝗹𝗹 𝗗𝗲𝘀𝗶𝗴𝗻: This air humidifier allows you to fill up without having to flip the tank or spill water on the floor. Its modular design is easy to remove and install, giving you a hassle-free cleaning experience.
- 𝟯-𝗶𝗻-𝟭 𝗛𝘂𝗺𝗶𝗱𝗶𝗳𝗶𝗲𝗿: DREO cool mist humidifiers are perfect companions for a healthier life, from helping you breathe easier, to making your own aromatherapy sessions, to changing the mood of your room with its ambient light (essential oils not included).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CCY6VG8Z |
| Best Sellers Rank | #330 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #2 in Humidifiers |
| Brand | DREO |
| Brand Name | DREO |
| Capacity | 4 liters |
| Color | White |
| Control Method | Touch |
| Customer Reviews | 4.4 out of 5 stars 25,154 Reviews |
| Filter Type | Pre Filter |
| Floor Area | 300 square_feet |
| Included Components | Aroma Pad, Cleaning Brush, Cleaning Guide*1, Humidifier*1, User Manual |
| Item Dimensions D x W x H | 5.51"D x 11.02"W x 10.16"H |
| Item Highlight | Easy to Refill & Clean, BPA-Free, Nightlight, Supersized Air Humidifiers for Large Room, Baby Nurseries, Plants, Indoor |
| Item Shape | Oval |
| Item Type Name | Humidifier |
| Item Weight | 3.1 pounds |
| Manufacturer | DREO |
| Material | Plastic |
| Model Name | HM311 |
| Model Number | DR-HHM001 |
| Number of Packs | 2 |
| Operation Mode | Ultrasonic |
| Other Special Features of the Product | 28dB Ultra-Quiet Operation, Adjustable Humidity Control, Aroma Diffuser, Easy Top-Fill, Night Light |
| Part Number | DR-HHM001 |
| Power Source | Corded Electric |
| Room Type | Bedroom, Kids Room, Living Room, Nursery, Office |
| Runtime | 36 hours |
| Special Feature | 28dB Ultra-Quiet Operation, Adjustable Humidity Control, Aroma Diffuser, Easy Top-Fill, Night Light |
| UPC | 850049246026 |
| Unit Count | 1 Count |
| Voltage | 120 volts |
| Wattage | 26 watt-hours |

## Product Details

- **Brand:** DREO
- **Capacity:** 4 Liters
- **Color:** White
- **Floor Area:** 300 Square Feet
- **Special Feature:** 28dB Ultra-Quiet Operation, Adjustable Humidity Control, Aroma Diffuser, Easy Top-Fill, Night Light

## Images

![4L Humidifiers for Bedroom, 36H Runtime, 28 dB Quiet, HM311 - Image 1](https://m.media-amazon.com/images/I/61Qinuq-vML.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: How noisy is the humidifier when it is working? I am a light sleeper and need to be in a very quiet environment to fall asleep.**
A: No worries at all. I am also a light sleeper, and this humidifier has never disturbed my sleep. It is much quieter than I expected, especially in sleep mode. In fact, I sleep much better with it on at night since it does a good job in relieving my itchy skin which caused by dryness.

**Q: Can you change the direction of mist output?**
A: Hi,
Yes you can.  There is a straight wide piece that goes across 75% of its total length on the top of the humidifier that  can be moved around in order to change the directional output.  Hope this helps.  Shalom… :O)

**Q: What warranty does it come with?**
A: Dear Customer,

This appliance is covered by Dreo warranty for 12 months from the date of its original purchase. You can also extend your warranty by registering your new appliance on our website: https://dreo.com/warranty. For any other issues, please don't hesitate to contact us. You can always find our contact information on the last page of the user manual. 

If you have any other questions, please feel free to contact us.

We are always at your service!
Dreo Customer Support Team

**Q: I've cleaned my humidifier 4 times since I opened the box 2 weeks ago. It continues to smell like mildew. Anyone else have this issue?**
A: Did you add baking soda to the water when you clean it Soak for 1/2 hour. Then clean and rinse well. Hope this works for you.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product
*by T***Y on August 24, 2026*

I was struggling to get rid of my cold, and my old vaporizer no longer seemed to be working. I bought this one mostly because it was on sale. The first night had me expelling my congestion right away. I honestly felt better by the second day of having this unit, and by the third I was completely recovered. I love how quiet it is, and it’s not overly complicated to use. Cleaning it is easy, too. Definitely worth the price.

### ⭐⭐⭐⭐⭐ Prevent low humidity illness
*by C***Q on February 2, 2026*

Update 4/17/2026: This is a great unit, I highly recommend cleaning the entire unit weekly to at most every 2 weeks. As my lung infection started to clear up, it started to get worse again! My doctor asked if I cleaned the humidifier yet? I said, "No, not yet". I can't remember the exact phrase she used, "humidifier bacterial infection". I cleaned out the the humidifier and was surprised with the amount of fungal growth that was in the very bottom of the both humidifiers especially the larger unit, this one! It took me a long time to thoroughly clean it out! one week later it had fungus growth but not much and was so much easier and quicker to clean out. Use white vinegar soft cloth and soft brush to clean out the base. By the way don't get water into the electrical part of the filter. If water does get into this section do not turn on until it is completely dried out or you will kill the unit! Updated: 2/8/2026 Dreo humidifier has been working non stop since I purchased it. My room has not got up to 60% humidity yet, the highest it got was 50%. However it doesn't hold it there long. I does go back down to 20-25% especially at night. I am feeling better but not fully healed... so, I am going to buy another one to help get the humidity of my room up to a healthy level! original post: Just what I needed for my small room, a new room temperature and humidity monitor I discovered my room humidity was 20% and for several years I kept getting sick at the same time of year, now I know why! This unit took 24 hours to get my room Humidity up 45% that is how dry it was, I feel much better already! The unit is whisper quiet and you can see the cool mist blowing up and the cool blue LED light is nice. I had to fill the unit up 3 times so far, I did not wait until the until shut down from the lack of water. I highly recommend this unit, well worth the cost. Less expensive than a doctor's visit for Upper respiratory infection and all the complications from that!!!

### ⭐⭐⭐⭐⭐ Works great! 5⭐️!
*by R***T on July 7, 2026*

I really like this humidifier a lot! First off it's really easy to fill and use. It doesn't have one of those screw on caps, the top just comes off, you fill it, and put it in the basin and turn it on. Second it puts out a steady stream, it's effective. Third I think for what you get the price is great. It also has some other cool features that I don't care about as much but they're nice. It has a digital display that tracks the humidity in the room and you can set it to auto hit a target level. It's almost silent. It has a little night light feature that easily turns on and off. The digital controls are nice and easy to use. 5 stars, happy customer!

## Frequently Bought Together

- Dreo Humidifiers for Bedroom, Top Fill 4L Supersized Cool Mist Humidifier, 32H Runtime, 28 dB Quiet Ultrasonic Air Humidifier for Large Room, Plants, Baby Nursery, Indoor, Night Light, Easy to Clean
- Protec Humidifier Tank Cleaner, 1 Count - Colors May Vary
- Dreo Demineralization Cartridge 3-Pack for Humidifiers, Compatible with Dreo Humidifiers HM311/311S/524/524S, Prevent Mineral Build-up, Filter Hard Water, Eliminate White Dust

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-09-13*