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Clean Air Optima 2-in-1 Dehumidifier and Air Purifier CA-704 Smart
white/black

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Brand
Clean Air Optima
Colour
white/black
Connectivity
WiFi, Bluetooth
Container Volume
3000 ml
Dimensions
250 x 500 x 250 mm
Miscellaneous
HEPA Air filter, App control
Note
Through the process of refurbishing the IPxx certification can no longer be guaranteed and, for example, water damage is therefore excluded from the warranty conditions.
Power
200 Watts
Weight
9500.0 g

Your refurbed product

Refurbed products are more sustainable and up to 40% cheaper compared to a new device. Your trusted refurbed product comes with a minimum 12-month warranty and a 30-day free returns policy, with no questions asked.

Clean Air Optima 2-in-1 Dehumidifier and Air Purifier CA-704 Smart - Description

Breathe easier and create a healthier home with the refurbished 2in1 Dehumidifier and Air Purifier CA-704 Smart by Clean Air Optima. This clever device tackles two essential air quality needs in one efficient, space-saving design. With smart connectivity, powerful filtration, and an eco-friendly approach, it supports your wellbeing while making a more sustainable choice for the planet.

Key Features & Practical Benefits

  • 2-in-1 Functionality: Removes excess moisture and purifies your air at the same time - ideal for bedrooms, living rooms, or home offices.
  • Smart Control: Manage air quality from anywhere using WiFi or Bluetooth and the dedicated app. Adjust settings, monitor performance, and schedule operation to suit your lifestyle.
  • HEPA Air Filter: Traps dust, allergens, and fine particles for fresher, healthier air. Breathe with confidence - especially important for allergy sufferers or families with children.
  • Efficient Dehumidification: Reduces humidity to help prevent mould, damp, and musty odours. Protects furniture and electronics while creating a more comfortable environment.
  • Large Capacity: Handles up to 3 litres, so you empty less often. Perfect for busy households.
  • Professionally Refurbished: Each device is thoroughly checked, cleaned, and guaranteed reliable - better than used and backed by our quality promise.
  • Sustainable Choice: Choosing a refurbished dehumidifier and air purifier helps reduce waste and save valuable resources. Enjoy clean air while supporting a greener future. ♻️

Why Choose a Refurbished Air Treatment Solution?

A refurbished 2in1 Dehumidifier and Air Purifier CA-704 Smart offers the same trusted Clean Air Optima performance with a smaller environmental footprint. By extending the life of quality appliances, you help cut down on electronic waste and carbon emissions. It’s a practical, responsible way to upgrade your home.

Typical Usage Scenarios

Q: Will this help with damp problems?

A: Yes, this device actively removes excess moisture, helping to prevent mould growth and keep your rooms fresh and comfortable.

Q: Can I use it while sleeping?

A: Absolutely. The smart controls let you set quiet, energy-efficient night modes for undisturbed rest and healthier air as you sleep.

Q: Is it suitable for allergy sufferers?

A: The built-in HEPA filter captures allergens, dust, and pollen - making it ideal for anyone seeking relief from indoor air irritants.

Q: What size room is it best for?

A: Its generous capacity suits medium to large spaces, such as living rooms, bedrooms, or shared family areas.

Peace of Mind with Every Purchase

Enjoy a minimum 12-month warranty and a 30-day free return policy. Experience the benefits of clean, comfortable air with the reassurance that your refurbished device is protected and reliable.

Choose the refurbished 2in1 Dehumidifier and Air Purifier CA-704 Smart for a healthier, more sustainable home - every breath counts.

The refurbed Process

Every refurbed device is refurbished in up to 40 steps — taking it from used to like new again. Here are 5 key steps:

Refurbisher buys used electronics

1. Supplier buys pre-loved tech

Deleting the data from used electronic devices

2. Data cleanse

Refurbishing defective components

3. Swap of faulty parts

Polishing the exterior of used electronics

4. External preparation

Refurbisher sells the devices through refurbed marketplace

5. Sold via refurbed

What is refurbed?
Refurbed is an online marketplace for refurbished electronics. All refurbed Clean Air Optima 2-in-1 Dehumidifier and Air Purifier CA-704 Smart function like new, but are much cheaper. How is that the case? Once sourced, experts put our products through an up to 40-step refurbishment process to ensure that all products work and look like new. This results in us offering better value products that are also more sustainable.
Why should I buy my Clean Air Optima 2-in-1 Dehumidifier and Air Purifier CA-704 Smart from refurbed?
refurbed Clean Air Optima 2-in-1 Dehumidifier and Air Purifier CA-704 Smart are great value, at up to 40% cheaper than new. Equally as important is trust. We give you a minimum 12-month warranty on each device and a 30-day free trial period, during which you can return for a full refund. This means you save money, and get to test the device to make sure it works perfectly for you.
Why are refurbed Clean Air Optima 2-in-1 Dehumidifier and Air Purifier CA-704 Smarts so cheap?
Every refurbed partner is specialised in certain brands. They mostly buy exhibit and corporate phones in large quantities at low prices. Their specialisation makes the renewal processes very efficient, resulting in 100% renewed products that are up to 40% cheaper than new devices.
What exactly do the product grades mean?
refurbed Clean Air Optima 2-in-1 Dehumidifier and Air Purifier CA-704 Smarts work like new devices and therefore have no functional limitations. The visual condition of the devices can be selected based on your needs. What are the visual categories?

Premium (AA-Grading)
Premium Clean Air Optima 2-in-1 Dehumidifier and Air Purifier CA-704 Smarts are visually identical to new, with no visible signs of wear or use. No scratches, scuffs, dents, or blemishes on the body or screen.
Excellent (A-Grading)
Excellent Clean Air Optima 2-in-1 Dehumidifier and Air Purifier CA-704 Smarts have no dents, scratches or signs of wear visible from a distance of 30cm - neither on the body nor on the display.
Very Good (B-grading)
Very Good Clean Air Optima 2-in-1 Dehumidifier and Air Purifier CA-704 Smarts may have minimal dents, scratches or wear on the body that can be seen from 30cm away. There may be micro-scratches on the display/screen, but these are not visible when the display is on.
Good (C-Grading)
Good Clean Air Optima 2-in-1 Dehumidifier and Air Purifier CA-704 Smarts have visible signs of use such as scratches and/or dents on the body. There may be micro-scratches on the display/screen, but these are not visible when the display is switched on.
How does the 30-day free trial work?
If you want to return your product for any reason, you can return it free of charge within 30 days. To do so, contact our partner directly via your refurbed account and let them know that you would like to exchange or return your device. You will receive a free return label from our partner by email or in your refurbed account. Alternatively, you can contact our refurbed customer service. We will be happy to help you and contact our partner.
What are my warranty terms?
We offer a minimum 12-month warranty on all refurbed Clean Air Optima 2-in-1 Dehumidifier and Air Purifier CA-704 Smart. This covers all/any technical defects might occur during this period, and are not caused by your own fault.

Examples are:
- The device can no longer be switched on.
- The unit cannot find a network.
- The loudspeaker does not work.

The battery is also covered by the warranty. A distinction is made between wear and tear and technical defects. Technical defects are covered by the warranty and are characterised by abnormal behaviour. Abnormal behaviour could be, for example, that the device can only be charged up to 40%. Please note, your min. 12-month warranty is refurbed's voluntary commercial promise to you. This does not impact your statutory consumers rights
How can refurbed guarantee the quality of your Clean Air Optima 2-in-1 Dehumidifier and Air Purifier CA-704 Smart?
Only professional and certified partners are allowed to offer their electronic products via refurbed. We ensure this with ongoing quality tests and constant monitoring. Our partners are all located within the EU. This allows us to guarantee fast delivery times and optimal contact to always perform our best.
Which environmental protection projects do we invest in?
We have planted over 6.6 million trees since our foundin, and we are very proud! We realised that planting trees alone does not tackle all of the environmental issues we a passionate about, however. That's why we now also support projects that
- restore landscapes — ecosystems are repaired and jobs are created, including tree planting along the way
- remove carbon from the atmosphere and store it permanently
- recycle electronic waste and reuse materials

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