2in1 Luftentfeuchter und Luftreiniger CA-704

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 - Description

Breathe easy and reclaim comfort in your home with the refurbished 2in1 Dehumidifier and Air Purifier CA-704 from Clean Air Optima. Designed for modern households, this smart appliance actively tackles excess moisture and airborne particles, helping you create a healthier, fresher environment - while also supporting a more sustainable lifestyle.

Why Choose the Refurbished CA-704?

Two Solutions in One Efficient Device

Dual functionality: Removes excess moisture and purifies air in one step, saving you space and energy.
HEPA Air Filter: Captures dust, allergens, and even fine particles, making every breath cleaner.
Large Container Volume: Handles up to 4 litres of water, so you empty it less often.
Quiet and Reliable: Professionally checked and cleaned, this refurbished model runs smoothly and efficiently - better than used, guaranteed.

Sustainable Comfort, Every Day

A more sustainable choice: By choosing a refurbished appliance, you reduce electronic waste and extend the life of quality tech.
Energy-conscious: At just 260 watts, the CA-704 delivers powerful results without heavy energy use.

Peace of Mind Included

Minimum 12-month warranty on every refurbished device.
30 days free return policy - try it at home, risk-free.

Key Benefits at a Glance

Effectively reduces humidity and prevents mould
Improves indoor air quality, filters pollen and allergens
Ideal for bedrooms, living rooms, or offices
Easy to move and fits neatly into your space

Typical Questions & Usage Scenarios

How does the CA-704 help with allergies?

The HEPA filter traps dust, pollen, and other allergens floating in the air. If you’re prone to allergies, especially during seasonal changes, this device helps you breathe easier and sleep better.

Can I use it in damp rooms?

Absolutely. The dehumidifier function works well in basements, bathrooms, or any space prone to moisture. It helps prevent mould and keeps your home comfortable year-round.

Is it suitable for larger rooms?

With its generous container volume and efficient design, the CA-704 can manage the air quality of most household spaces - whether it’s a busy living room or a home office.

What makes a refurbished appliance a good choice?

Refurbished products from refurbed are professionally inspected, cleaned, and guaranteed to work reliably. You get high-quality performance and support a more sustainable, circular economy at the same time.

Refresh your air, protect your home, and support the planet - all with one smart, refurbished appliance. The 2in1 Dehumidifier and Air Purifier CA-704 brings cleaner air and peace of mind to your daily life.

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:

1. Supplier buys pre-loved tech

Deleting the data from used electronic devices

2. Data cleanse

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

Learn more

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 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 from refurbed?

refurbed Clean Air Optima 2-in-1 Dehumidifier and Air Purifier CA-704 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-704s 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-704s 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-704s 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-704s 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-704s 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-704s 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. This covers any technical defects that 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 minimum 12‑month warranty is refurbed's voluntary commercial promise to you. This does not affect your statutory consumer rights

How can refurbed guarantee the quality of your Clean Air Optima 2-in-1 Dehumidifier and Air Purifier CA-704?

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