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PAE 51
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  5. PAE 51 air cooler

PAE 51 air cooler

Coldness from natural evaporation for hot summer days

Enjoy the summer to the full with a cool refreshment

Can be used virtually everywhere. Indoors and outdoors. Light and portable.

At the push of a button, Trotec's air cooler PAE 51 brings instant, agreeable cooling and turns heated office and living spaces into climatic temples of well-being. When the thermometer climbs to temperatures of over 25 degrees, both mental and physical performance start to decrease. At night, excessive temperatures keep us awake and prevent us from getting the necessary rest to recover from the day's exertions.

A healthy room climate without side effects

The PAE 51 serves to cool, ventilate, refresh and humidify the air.

Unlike an air conditioning system the air cooler PAE 51 does not reduce the room temperature by means of refrigerants, instead it makes use of the natural principle of evaporation resulting in the desired cooling effect. For this cooling process the device needs fresh tap water that is filled into the 20 l water tank. The integrated evaporation filter with honeycomb structure humidifies the sucked-in air and then discharges it as cold air through the fan. This chilled air current provides cool refreshment that is immediately noticeable on your skin.

Our recommendation: The water for filling the evaporative air cooler should be as cold as possible. Use ice packs or ice cubes for an additional cooling effect.

Healthy breathing to increase your well-being! Owing to its integrated air filter the PAE 51 can be used as humidifier and air freshener all year round. Especially in the dry winter months this can help to reduce the risk of catching a cold which is often promoted by dried-out mucous membranes from the dry heated air.

Product brochure Guide to practical knowledge of room cooling


Enjoy pleasant refreshment! You can also find all the relevant information about our comfort air conditioning units in the product brochure. Download the PDF directly here.

To the PDF document

Increasing the humidity level to 50 % reduces the risk of transmission of viruses

Medical specialists have evaluated research findings relating to the resistance of viruses (e.g. SARS-CoV, MERS-CoV or SARS-CoV-2 (Covid-19), influenza) to air humidity. These findings have revealed that the humidity level has a crucial impact on the infectivity of germ droplets. Dry room air with a relative humidity content of less than 40 % lets tiny droplets infected with influenza or cold viruses dry up. This preserves pathogens so that they remain infectious for a very long time. In the optimum relative humidity range between 40 and 60 % aerosols only shrink so far that the salt concentration in the aerosol core increases, causing the germs and microorganisms contained to be killed. This minimizes the risk of an infection with influenza and cold viruses.

Medical specialists emphasize that we are able to reduce the risk of infection by increasing the humidity level in buildings. In this way, increasing the humidity level to approx. 50 % by humidification will reduce the risk of transmission. Moreover, the humidified air improves the body's defence situation by more efficient cleaning of the air passages and an improved immune defence. In modern buildings with a watertight building envelope, central heating and ventilation systems, these limit values can often not be complied with in everyday life without active humidification. This is where devices with a humidification function come in to provide assistance.

Increasing the humidity level to 50 % reduces the risk of transmission of viruses

Customised feel-good climate and a healthy rest

Adjust the cooling intensity to your individual requirements.

The decision regarding intensity and flow direction of the distributed air is completely up to you. The device is equipped with 4 fan stages, manually adjustable ventilation flaps an optional on-demand swing function for the automatic distribution of cold air in the room. 

You wouldn't mind a fresh breeze? The natural wind mode can revitalize you with an additional boost of freshness. The alternately rising and subsiding ventilation intensity is based on natural winds and ought to have the same invigorating effect. For an extra dose of freshness available at the push of a button.

A good night's rest is enabled by use of the ultra-silent night mode and timer function that has the air cooler switch off automatically after a freely selectable period of time. All settings are either made via the LED-lit control panel at the device or using the supplied infrared remote control. 

With an hourly evaporation performance of 2 litres and an air flow rate of 661 m³/h the PAE 51 is particularly well-suited for use in rooms sized up to 150 m³. Chilled calculators will appreciate the low energy consumption of merely 110 watts as well as the consequently also low operating costs. 

Natural cooling principle

In contrast to air conditioners, air coolers do not use any chemical refrigerants. The cooling effect is generated in a natural manner. Moreover, neither an exhaust air hose nor any elaborate installations are required.

A mobile air cooler works on the principle of natural evaporation cooling. As you probably know from your own experience, blowing on moist skin creates an instant feeling of refreshment as the evaporation process withdraws warmth. Air coolers work in the same way: in the interior of the air cooler there is a water-soaked filter mat using. The warm air is directed from the rear of the device through the wet filter mat and in passing is cooled down due to the evaporation effect. The now colder air is then blown back into the room by the fan.

Can be operated all year round – air cooler in the summer, humidifier in the winter

With the PAE 51 you can enjoy mobile feel-good climate throughout the year. We recommend using the slim air cooler in space-saving design throughout the year rather than parking it in a storeroom when the summer ends. In the spring and late summer its 4 fan stages can provide a fresh breeze so that you can enjoy the cooling effect of the cold evaporation.

In autumn and winter the device is furthermore well-suited as an effective humidifier, in order to create a more pleasant room climate. Since dry heated air can irritate the respiratory tract, dry out the skin and cause red eyes. Moreover, the multiplication of viruses within the room air is reduced at a humidity level of 50 %. By using a humidifier you provide for a sufficient humidity level and in this way can improve your own well-being in sticky, overheated rooms as well as prevent colds and virus infections.

With the 4-in-1 air cooler PAE 51 you benefit from pleasant air cooling, refreshing ventilation and agreeable humidification. For a perfect climate throughout the year!


Continuous fresh water supply to ensure a healthy air quality.

To automatically keep the water storage tank as clean as on the first day, we recommend using a SecoSan-Stick which keeps the water permanently clean, clear and free from germs or unpleasant odours. The unique feature of SecoSan is its antimicrobial surface with mobile silver ions, which inhibit bacteria and germs upon contact and thus prevent their reproduction. The entirely self-dosing SecoSan ion reservoir keeps the water demonstrably free from germs. The stick thus guarantees clean water for up to 6 months even if the water is changed or consumed daily.

Using air coolers as humidifiers during the wintertime

Air coolers are most effective in rooms filled with dry air. Just like humidifiers these devices operate based on the evaporation principle, i.e. they directly supply the air with cool moisture. This means that for process-related reasons the humidity level in the room is increased perceptibly. During the winter this increase of humidity is beneficial to the mucous membranes. As a result you might be able to avoid catching a cold that is largely caused by the dry heated air. The practical and optically attractive thermohygrometer BZ20M in cross-needle design shows you at a glance when the humidity level is in the optimum range. 

PAE 51 - Special equipment features

Aircooler PAE 51
The PAE 51 convinces with the following performance characteristics: Humidification performance 2 litres per hour, 20-litre water tank, air volume 661 m³ per hour and 4 fan stages. The scope of delivery also includes a remote control.
Aircooler PAE 51
Innovative honeycomb technology: Due to its open structure, a completely wet honeycomb filter comes with particularly favourable evaporation properties for the natural cooling of the air passing through.
Aircooler PAE 51
4-in-1-technology: air cooling, ventilation and humidification. The sucked-in room air is humidified by the honeycomb evaporation filter, and the new cold air is blown back into the room. The 4 fan stages can also be utilized without air cooling function. In winter the PAE 51 serves as an effective humidifier against too dry heated air.
Aircooler PAE 51
The air cooler PAE 51 comes with manifold functions: air cooling, 4 fan stages, natural wind mode, swing function, night mode, timer, automatic switch-off and filter drying. The settings can be carried out either on the clearly arranged control panel or also comfortably using the remote control.
Aircooler PAE 51
The large 20-litre water tank allows long cooling and humidification times. Add ice cubes or ice packs to further increase the available cooling capacity. The handy water filling level indication quickly reveals how much water is left inside the air cooler and also has a MAX/MIN indication.
Aircooler PAE 51
By means of the horizontal fins, the discharge direction can be manually adjusted to point upwards, straight ahead or downwards. When the swing function is activated, the vertical air flaps on the inside swing from left to right automatically and spread the air evenly in the room.
Aircooler PAE 51
To make sure you can always just set the mobile air cooler up wherever refreshment is needed, it comes equipped with smooth-running wheels and a recessed handle. When the device is stored after use, the remote control is stored in the practical holder.
Aircooler PAE 51
Furthermore, two of the wheels have a parking brake to ensure a firmly fixed position. The integrated cable winder sorts things out and prevents dangerous trip hazards.

A cool highlight in every living environment

PAE 51 - application on balcony or terrace
The air cooler PAE 51 ensures a fresh breeze on balcony or terrace.
PAE 51 - used in the bedroom
It can be used as air cooler during the summer and as humidifier during the winter – both conducive to a good night’s sleep.
PAE 51 - used at the office
The air cooler PAE 51 provides soothing refreshment on the hot days at the office.
Technical data by comparison

All air coolers in direct comparison:

To find the air cooler which exactly meets your requirements, please consult the concise overview of all air coolers of the PAE series from Trotec, which we're providing to you here so that you can compare them directly to each other.

Models which you do not wish to include in your comparison can be easily dismissed with only one click.

Technical data by comparison

A few practical benefits:

  • 4-in-1 air cooler: air cooling, ventilation, air freshening and humidification
  • Efficient latent heat of evaporation with honeycomb technology
  • Operation with ice packs or ice cubes possible to increase cooling capacity
  • Natural wind mode
  • Better room climate
  • Adjustable discharge direction and automatically swivelling fins
  • 4 fan stages
  • Timer function
  • Night mode
  • Large water tank for long-term operations
  • Highly energy-efficient
  • Low noise
  • IR remote control
  • Function for automatic switch-off after 15 h
  • Filter drying function
  • Easy to transport thanks to sturdy wheels
  • Wheels with parking brake to ensure a firmly fixed position
  • Convenient cable winder
  • Suitable for year-round operation! Air cooler in the summer, humidifier in the winter

Cool facts in place of hot air!

Others pass air coolers off as air conditioners, we provide the big picture. Before purchase make sure to get an overview of device differences, functional principles and possible applications.

Trotec, your climate expert, has compiled the most important facts in a reader-friendly overview! Direct link to the “Practical knowledge concerning air conditioning“ …


Aircooler PAE 51 show in Trotec online shop

Aircooler PAE 51

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259.95 £ 119.95 £ incl. VAT Show net price (VAT not included)


Technical data

Technical data
General information
  Article number
Air flow rate
  Level Max. [m³/h] 661
  Air discharge speed [m/s] 7
  stages 4
Evaporation capacity
  Max. evaporation performance [l/h] 2
Cooling medium
  Cooling medium Air
Ambient conditions
  Min. temperature [°C] 5
  Max. temperature [°C] 43
  Humidity RH [%] <95%
Safety feature
  Protection class II
Water tank
  Contents in [l] 20
Electrical values
  Mains connection 220 - 240 V, 50 Hz
  Power input [W] 110
Electric connection
  Connection plug CEE 7/16
  Cable length [m] 1.8
Sound values
  Distance 1 m [dB(A)] 60
Control panel
  LED display
  Length (packaging excluded) [mm] 390
  Width (packaging excluded) [mm] 342
  Height (packaging excluded) [mm] 897
  (packaging excluded) [kg] 8
Equipment, features and functions
Functions and features
  Automatic operation
  Suitable for operation with freezer packs
  Ventilation function
  Air freshening function
  Cooling by evaporation with honeycomb technology
  Automatic switch-off function
  Energy-efficient operation
  Memory function
  Filter drying function
  Adjustable air discharge direction
  Swing function
  Water filling level indicator
  Warning light indicating an empty water tank
  Switch-off when water tank is empty
  Night mode
  Supplied ice packs
Timer function
  Switch-off time can be preselected
  Switch-on time preselectable
  Air filter
  Honeycomb filter
  Plastic wheels with parking brakes
  Recessed handles
  Parking brakes
Housing design

 standard equipment

 optionally available

 not available



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