Midea DF 20L Portable Dehumidifier - MDDF-20DEN7 - Return Unit

Quick Find Code: MDDF-20DEN7/RETA

2 Year* Warranty
Free Delivery!*
  • Smart dehumidification
  • Low-noise design
  • Auto-restart
  • Noise Level Range : 37 - 46 dB;
  • Wi-Fi Controlled With Midea App

Midea DF 20L Portable Dehumidifier - MDDF-20DEN7 - Return Unit

Quick Find Code: MDDF-20DEN7/RETA

2 Year* Warranty
Free Delivery!*
  • Smart dehumidification
  • Low-noise design
  • Auto-restart
  • Noise Level Range : 37 - 46 dB;
  • Wi-Fi Controlled With Midea App

£185.95 (inc. VAT)

Show ex. VAT

Looking for a new one?

Midea 20L DF3 Dehumidifier - MDDF-20DEN7

Used Grades Explained

Grade A Unit in excellent condition, possible light use, all extras included, packaging intact but may be marked. full warranty
Grade B Unit used but fully functional, possible light cosmetic damage to unit, all accessories included, packaging may be damaged. 6 months warranty
Grade C Unit used with cosmetic damage or dents, possible missing accessories, packaging damaged or unoriginal. 6 months warranty

Product Overview

Introducing the brand new for 2020 range of Midea Dehumidifiers

Midea are Introducing the MDDF-20DEN7-QA3 Wi-Fi with room coverage up to 45 m2. Dehydrate up to 20 liters of water for a day to breathe freely at any time. Provide a healthy atmosphere without moisture and mold. Use the Dehumidifier day and night, even in the bedroom, as only 37 dB noise quiet.

Your Dehumidifier works properly and protects your home from an accident even when you are gone! The tank management system stops working when the container is full.


  • Smart Dehumidification Technology - automatically control room humidity in a comfortable range (45%-55% according to room temperature) which inhibits bacteria growth.

  • Low Noise Design - minimise noise and maximise comfort by optimising the refrigeration and air duct systems. The noise is as low as 39dB. The DF Dehumidifier also uses reciprocating compressor technology allowing less vibration to effectively reducing the noise level.

  •  Auto Restart - if the unit turns off unexpectedly due to the power being cut, it will restart with the previous function setting automatically when the power resumes.


Download Midea DF Dehumidifier


Smart Home Compatible WithWiFi Only
Applicable AreaBathroom, Conservatory, Home, Laundry Room, Living Room, Office
Domestic or CommercialDomestic
Filter TypeHEPA Filter
Finish Or ColourWhite
Laundry ModeYes
LCD DisplayYes
Minimum Voltage220V
Noise Level Maximum46dB
Noise Level Minimum37dB
power consumption280W
Smart Home CompatibleYes
Tank IncludedYes
Type Of DehumidifierRotary Compressor

Free UK Next Working Day Delivery applies to thousands of qualifying products

Free UK Next Working Day Delivery on All Qualifying Orders Over £50. Orders under £50 will incur a £5.90 Delivery Fee.

This Excludes Delivery to the Scottish Highlands, Offshore Islands and Northern Ireland. These will be charged at an extra rate, which will be calculated at the checkout.

Heavier Items may also incur an extra fee.

Frequently Asked Questions

What size dehumidifier do I need?

This will depend on the space, condition, and application. Smaller rooms require an 8 – 10L dehumidifier, whereas a whole house would require a 25-30L one. Specific damp problems or laundry drying may also increase the size of the dehumidifier. We go into more detail in the article What Size Dehumidifier do I Need.

What is a dehumidifier size?

When we talk about dehumidifier’s size, we mean the extraction rate. This is the amount of water in litres it can dehumidify within 24 hours. It’s important to note that we don’t mean the tank capacity. Dehumidifier tanks tend to be between 2-6L and would need emptying during the day. Most dehumidifiers can provide continuous drainage through a hose into a drain.

Can you use a dehumidifier as a clothes dryer?

Yes, many units have a laundry mode, which is specifically used for drying clothes. Using a dehumidifier to dry your laundry can save you a lot of money in the long run. Read our Dehumidifier vs Tumble Dryer article to see how getting a dehumidifier can save you up to £150 a year! Or shop all dehumidifiers with the laundry mode here.

Can a dehumidifier purify the air?

Yes, some dehumidifiers can be used as an air purifier. We have a range of dehumidifier with HEPA and dust filters. Always make sure to check the product description or user manual to see which modes your dehumidifier has.

What is relative humidity?

Relative humidity is a percentage of water vapor in the air compared to the maximum it can hold. So for example, if the relative humidity is 50%, that means currently the air contains half the amount of water vapor it can hold. The higher the humidity is, the warmer you’ll feel and your home will be more prone to mould. The lower the humidity is, the dryer the air will be.

What is the ideal humidity for my home?

For the UK, it is recommended to keep our home’s humidity between 50% - 30%. Any lower the air will be excessively dry causing dry skin, throat, and nose. Any higher, the air will be excessively moist which can cause damp and mould damage.

My dehumidifier unit is blowing out warm air, is this normal?

Yes, your dehumidifier can be blowing out warm air. This is due to the process of dehumidifying and is completely normal.

How much does a dehumidifier cost to run?

This is going to differ unit to unit. For example this Devola 12l compressor dehumidifier will cost you around 5p per hour, or this Meaco 25l dehumidifier around 7p per hour (these prices are based on the April 2024 price cap).

I’m still unsure on which dehumidifier to get, can you help me decide?

We have a lot of advice to help you choose the right dehumidifier. Start by reading over our Dehumidifiers Buying Guide or Top 10 Dehumidifiers. To view all our dehumidifier articles, click here.