Table of contents:
- The best air conditioners 2020: All test winners at a glance
- Test winner monoblock device at Stiftung Warentest: De'Longhi PAC N90 Eco Silent
- Test winner split device at Stiftung Warentest: Daikin FTXP25M5V1B with RXP25M5V1B
- Bestselling mobile air conditioners: Suntec Impuls 2.0 Eco R290
- Air conditioning systems: This is how it was tested
- Buying air conditioning at home: you should know that

2023 Author: Sheila Hailey | [email protected]. Last modified: 2023-11-26 15:18
- Test winner mobile air conditioners
- Test winner split devices
- The bestseller among mobile air conditioners
- Buy air conditioning 2020: you should know that
The best air conditioners 2020: All test winners at a glance
placement | product | price | offer |
Stiftung Warentest winner monoblock device | De'Longhi Pinguino PAC N90 Eco Silent | approx. 520 euros | at Cyberport |
Stiftung Warentest winner split device | Daikin FTXP25M5V1B with RXP25M5V1B | approx. 900 euros | at Idealo |
Bestselling mobile air conditioner | Impulse 2.0 | approx. 275 euros | on Amazon |
Mobile air conditioners: View best seller on Amazon
Test winner monoblock device at Stiftung Warentest: De'Longhi PAC N90 Eco Silent

If you want to set up a mobile air conditioning system on individual days of the year, the De'Longhi PAC N90 Eco Silent is a top device in its class. The manufacturer uses propane (R290) for cooling instead of climate-damaging refrigerants - some of which have been banned since 01.01.2020. This also has a direct advantage for the customer: he can buy additional coolant. In contrast, R 410A will be difficult to get from older models in a few years.
At the Stiftung Warentest (issue 6/2020) the PAC N90 Eco Silent achieved a grade of 3.5 and is thus the test winner among the monoblock devices. Above all, energy efficiency bogged down the test scores for the monoblock devices. Such an air conditioning system should therefore only be used if possible if you only want to use it on individual days of the year - see below for more details. In this case, the De'Longhi PAC N90 is a good choice: According to Stiftung Warentest, it is better than the competition in terms of energy efficiency compared to its competitors. In addition, most other devices are not so good in cooling performance.
DeLonghi PAC N90 ECO SILENT
Now from € 459.00 at Cyberport Similar offer at Amazon price can now be higher. Price from 27.07.2020 00:24 a.m.
advantages
- Simple retrofitting
- Propane as a coolant
disadvantage
High power consumption
Test winner split device at Stiftung Warentest: Daikin FTXP25M5V1B with RXP25M5V1B

Split units are the more professional choice. Energy consumption is often significantly lower than that of monoblock devices, which means that operating costs are lower. For this, they cannot be set up so level with their two modules. Installation is carried out by specialist companies.
The Daikin indoor unit FTXP25M5V1B with the outdoor unit RXP25M5V1B not only achieved first place in the 06/2020 test by Stiftung Warentest. It is also the device with the lowest electricity costs. The cooling time is particularly fast compared to the monoblocks, the noise level in the interior is moderate - especially in the whisper mode. With the optional WLAN module, the air conditioning can also be controlled via the network.

Daikin air conditioning R-32 Mono Split 2.5 kW
Now from € 889.90 on Ebay price can now be higher. Price from 2020-27-07 01:01 a.m.
advantages
- Favorable operating costs
- Cools quickly
- Comparatively quiet
disadvantage
- Installation necessary
- Expensive
Bestselling mobile air conditioners: Suntec Impuls 2.0 Eco R290

If all of this was too expensive, take a look at the bestseller at Amazon: Suntec Impuls is one of the best-selling air conditioning units and is rated quite well with a user rating of 4.1 out of 5. There are different versions. You should definitely pay attention to the addition Eco R290 to get a modern coolant.
If you do not properly seal your window from which the exhaust hose leads, you could shock the next electricity bill with frequent use. Because the Suntec device is a monoblock device. And as I said above, they are very inefficient. The Stiftung Warentest tested the more powerful version Impuls 2.6 Eco R290. With a rating of 4.8, the device did not perform well due to poor energy efficiency and cooling. For smaller rooms, however, the cheaper, weaker and therefore more economical model should be enough:

Suntec mpuls 2.0 Eco R290 mobile air conditioner
Now from € 240.17 at Amazon price can now be higher. Price from 2020-26-07 11:51 p.m.
advantages
- Simple retrofitting
- Propane as a coolant
- Cheap
disadvantage
High power consumption
Air conditioning systems: This is how it was tested
In the 06/2020 test, the Stiftung Warentest composed the overall grade from several sub-grades. In contrast to previous tests, the testers weighted the environment and energy efficiency most, with 50 percent. The sub-grade cooling was included in the final grade with 35 percent, the handling with 15 percent.
It was different in the last test in 2018: cooling performance / energy efficiency counted 30 percent, cooling comfort 20 percent. Environmental characteristics, handling as well as safety / processing and even the heating behavior were also included in the final grade. In our opinion, anyone who looks at devices from different tests of the Stiftung Warentest in retail cannot compare the grades from different years.
Buying air conditioning at home: you should know that
With air conditioning systems there is more to consider than when buying a washing machine. There are a few things you should know before deciding on a model type:
Split device: You should know this before buying
A split device consists of two parts: an indoor and an outdoor module. The two modules are connected to each other via a coolant. Installation, repairs and expansion are carried out by specialist companies or the manufacturer's customer service.
Split devices: View bestseller on Amazon
Anyone who has rented a house or apartment will normally not be allowed to install it without the landlord's consent. A look at the rental agreement reveals more. By the way: Immediate neighbors might not be very pleased with the air conditioning. Because not only the indoor module generates noise, but also the outdoor module.
Monoblock device: You should know this before buying
Compared to the split device, setting up a monoblock device is straightforward and can be carried out yourself. However, one should know: A hose runs from the mobile air conditioner into the open, so it must be installed near the window.
Mobile air conditioners: View best seller on Amazon
Of course, it is pretty nonsensical to switch on the air conditioning and keep the window open because of the hose - which means that hot air gets back into the room. Some devices come with covers that cover the gap caused by a sliding window. At Amazon there are also more or less provisional solutions for normal windows that keep the warm air largely outside.

HOOMEE window sealing for mobile air conditioners
Now from € 16.99 at Amazon price can now be higher. Price from 27.07.2020 01:24 a.m.
In his home you could of course drill a hole for the air hose instead of the window solution. However, this is not advisable because it is no longer sufficiently insulated for the winter cold.
When buying the device, you should make sure that it is really an air conditioner with coolant or just a humidifier. The latter is even easier to set up (it does not need a hose outside), but the cooling capacity with freezer batteries is very limited.

Klarstein Skyscraper Ice - Air Cooler, Fan, Humidifier & Air Purifier
Now from € 179.99 at Amazon price can now be higher. Price from 2020-26-07 11:32 p.m.
Buy air conditioning: consider room size
If you want to buy air conditioning, you should not only pay attention to the type and the test results. To choose the right model, you should compare the room size with the room size recommended by the manufacturer. Important: The information is sometimes given in cubic meters, not square meters. You multiply the height of the room by the length and width (often around 2.50 meters, old buildings are higher).
Buy air conditioning: environmental protection and costs
If you do not generate your electricity using a photovoltaic system, large electricity consumption is disadvantageous for the environment and your wallet. The differences are enormous: The Stiftung Warentest calculated that electricity costs over a period of 10 years can range from 380 euros to over 800 euros. Many split devices are more efficient than many monoblock devices.
If you want to do something good for the environment, also pay attention to a coolant such as propane. Diflourmethane plus pentaflourethane is significantly more harmful to the climate. Ultimately, it is best for the environment not to use air conditioning at all.
Alternatives to the air conditioner
With a few tricks, you can keep it reasonably cool even without air conditioning: On the one hand, you should ventilate well in the morning and keep the windows closed during the midday and afternoon heat. On the other hand, closed blinds (especially outside the window) prevent the room from being warmed up by the sun shining in.
Fans: View best seller on Amazon
A fan gives you a feeling of coolness - although not really colder air. While ceiling fans are permanently installed, table or pedestal fans can be quickly set up on hot days and cleared back into the basement over the winter. An air humidifier (usually with an integrated fan) can also provide a more pleasant indoor climate on hot days.
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