Prime Day Points Redemption | Humidifier 311, 4L
1. How do I use the discount code?
Copy the discount code from the product page,and then apply the discount code during your checkout.
2. Can I redeem multiple discount codes?
No, discount codes cannot be combined. Only one code can be applied per order.
3. Why is my discount code invalid?
* The code does not apply to the items in your cart.
* The code was entered incorrectly.
* The code has expired.
* The code is not from DREO's official website.
* Your cart already has an active discount code, and multiple codes cannot be used together.
If you have any questions,please feel free to reach out to our customer service team support@dreo.com
Prime Day Points Redemption Only
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- Promotion Period: June 16–22, 2026
- Points Redemption Only: This item is available for Prime Day points redemption only.
- Points Policy: Redeemed points generally cannot be returned, refunded, exchanged for cash, or converted back to account credit.
- Returns & Support: Returns or exchanges are subject to DREO’s return policy and customer support review.
- Availability: Limited quantities available during the promotion period.
Color:
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Prime Day Points Redemption | Humidifier 311, 4L
Sale price$39.99 USD
Regular price (/)
Color:
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Specifications
Power Input: 120V 60Hz
Rated Power: 26W
Water Tank Capacity: 4L
Noise Level: 28 dB
Effective Range: 300ft²
Control Method: Touch
Item Weight: 3.1lb
Product Dimensions: 5.51D x 11.02W x 10.16H
What's in the box
1x Dreo HM311 Humidifier
1x User Manual
1x Cleaning Guide
1x Cleaning Brush
2x Aroma Pad (1 Pre-Installed)
Frequently Asked Questions
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Why does the humidifier not work?
1. Make sure that the cord is connected to a powered outlet and that the mains voltage corresponds with the voltage indicated on the humidifier.
2. The humidifier will shut down automatically in the event of low water.
3. Check the water tank is installed properly.
2. The humidifier will shut down automatically in the event of low water.
3. Check the water tank is installed properly.
Why is the humidifier not misting?
1. Turn the mist level to a higher setting.
2. The base has too much water. Empty the base and refill the water tank (not the base).
3. Please check whether the air inlet is blocked.
4. Make sure the nozzle is not blocked.
5. Make sure the humidifier is not a flat surface.
6. The water temperature may be too low. Turn the mist level to the highest setting and let it run for a while, then adjust to the desired setting.
7. If the water tank or base has been washed with detergent, rinse thoroughly with clean water to remove any remaining detergent.
2. The base has too much water. Empty the base and refill the water tank (not the base).
3. Please check whether the air inlet is blocked.
4. Make sure the nozzle is not blocked.
5. Make sure the humidifier is not a flat surface.
6. The water temperature may be too low. Turn the mist level to the highest setting and let it run for a while, then adjust to the desired setting.
7. If the water tank or base has been washed with detergent, rinse thoroughly with clean water to remove any remaining detergent.
There is white dust in the water tank
Please descale the humidifier regularly. Using purified or distilled water can help prevent the formation of scale.
Why does misting produce an unpleasant smell?
1. Use purified or distilled water only. It is not recommended to use tap water
2. Change water regularly to avoid dirty water accumulation
3. Clean the humidifier and keep it done for 12 hours with the cover detached
4. Clean the aroma pad tray, and change the aroma pad.
2. Change water regularly to avoid dirty water accumulation
3. Clean the humidifier and keep it done for 12 hours with the cover detached
4. Clean the aroma pad tray, and change the aroma pad.
Why does water leak from the humidifier?
1. Make sure the silicone sealing ring around the water outlet valve is secure.
2. Avoid running the humidifier in a room with over 60% relative humidity.
3. Wipe any excess water.
4. Do not shake the humidifier.
5. Make sure to place the humidifier on a flat, level surface.
6. Float in base not in place.
7. Check the water tank for leaks. If there are leaks, please contact support@dreo.com
2. Avoid running the humidifier in a room with over 60% relative humidity.
3. Wipe any excess water.
4. Do not shake the humidifier.
5. Make sure to place the humidifier on a flat, level surface.
6. Float in base not in place.
7. Check the water tank for leaks. If there are leaks, please contact support@dreo.com
Why does the humidifier use the water too quickly？
1. Set the mist level to a lower setting.
2. The humidifier uses up water based on the environmental temperature and humidity. If your environment is cold and/or dry, the humidifier will run out of water faster.
2. The humidifier uses up water based on the environmental temperature and humidity. If your environment is cold and/or dry, the humidifier will run out of water faster.
Why does the humidifier make a loud or unusual noise?
1. Set the mist level to a lower setting.
2. Please do not place the humidifier directly on the carpet, as this will easily lead to clogging of the humidifier air inlet holes.
3. The humidifier may malfunction. Please stop using the humidifier and contact support@dreo.com
2. Please do not place the humidifier directly on the carpet, as this will easily lead to clogging of the humidifier air inlet holes.
3. The humidifier may malfunction. Please stop using the humidifier and contact support@dreo.com
Why are there condensation forms around humidifiers or windows?
Humidity may be too high. Please try to turn down the mist level and turn off the humidifier, or open a door or window to the room.
Why has mold grown inside the humidifier?
1. Clean the water tank and base chamber regularly.
2. It is recommended to use purified water to slow down the growth of mold.
2. It is recommended to use purified water to slow down the growth of mold.
Why did the red light show up?
1. The water tank is out of water, please fill it up.
2. The water tank is not correctly placed on the base, please reposition it.
3. Clean the water filter or replace it with a new one.
2. The water tank is not correctly placed on the base, please reposition it.
3. Clean the water filter or replace it with a new one.
Essential oil has little or no smell
1. Make sure you’ve added 10 or 15 drops of oil into the base chamber.
2. For best results, please use pure essential oil.
3. Replace your aromatherapy pad regularly.
2. For best results, please use pure essential oil.
3. Replace your aromatherapy pad regularly.
Why is the humidity display way off?
1. The humidity in each area of the room has a certain difference, a ±5% difference in humidity is normal.
2. Please try to adjust the angle of the fog, the fog outlet should not be aimed at the humidity sensor (near the aroma tank).
3. Make sure the room is ventilated for even more humidity in the room.
2. Please try to adjust the angle of the fog, the fog outlet should not be aimed at the humidity sensor (near the aroma tank).
3. Make sure the room is ventilated for even more humidity in the room.
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