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Air cooler PAE 31
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Design air cooler PAE 31

Room-filling turbo cooling with air freshening, air humidification and remote control

Turbo mode for summer times: Serves to cool, refresh and humidify

When summer turns up its heat once again, the 4-in-1 air cooler PAE 31 (air cooling, air freshening, ventilation and humidification) provides an icy fresh air flow for quick cooling. The PAE 31 cools its air current down to 2 – 3 °C and thus ensures an optimal temperature difference between outside and inside temperature so that the body is not unnecessarily stressed. The high-performance blower with turbo spin technology and a range of 10 metres cools down hot living and business rooms, conservatories, offices and shops to pleasant room temperatures at an impressively quick speed. At the same time, the all-rounder cleans and humidifies the room air to refresh you with clean and optimally humidified cold air. The ventilation performance of the turbo spin fan is adjustable in three stages.

Natural cooling by evaporation with economic efficiency

The innovative honeycomb cooling technology of the air cooler PAE 31 is something you know from nature. Once a breeze blows over damp skin, you immediately feel a pleasant cooling sensation on your skin. The cooling effect is caused by the evaporation of the water. The thermal energy required for this process is withdrawn from the warm air, and the temperature drops noticeably. The PAE 31 also makes use of this natural cooling effect with its cold water or ice water filling. Once the warm room air flows through the humid honeycomb filters, the air is cooled down as thermal energy is withdrawn. Then, the air is humidified with cold or ice-cold water to be cleaned in the air filter afterwards and to be finally blown out into the room as an icy fresh breeze in the shape of a hurricane via the turbo spin high-performance fan. No chemicals, no energy-consuming cooling compressors and no disturbing exhaust air hoses are used in this process.

The hotter the day, the stronger the cooling capacity

Where conventional air conditioners reach their performance limits, the PAE 31 turns up its cooling capacity. The warmer the room air, the faster the humidity evaporates inside the honeycomb filter and the more heat is withdrawn from the air due to the evaporation process. So you can always rely on the cooling capacity of the PAE 31 to keep up with outside temperatures. With its powerful turbo spin air flow rate of 1,000 m³/h and a generous and easy-to-clean 6-litre water tank, the air cooler is recommended for use in rooms sized up to 26 m² or 65 m³.

Threefold improvement in indoor air quality with additional health protection

The combined air cooling, air humidification and air purification modes of the PAE 31 noticeably improve the room climate and repels pathogens from the air at the same time. The proliferation of viruses (for example flu viruses, coronaviruses, etc.) is strongly influenced by the humidity of the air. Optimally humidified room air has been proven to reduce the risk of viral infection and keeps the nasal mucous membranes, which are important for the immune defence, moist. As a humidifier for year-round use, the PAE 31 impresses with a humidification performance of 1.1 l/h to keep the humidity level in the optimum range of 40–60 %. In addition, the PAE 31 can be used as a refreshing fan throughout the year even without the air cooling and humidification function. To either direct the cooling air flow to a specific point or to distribute it in the entire room, the device has an on-demand all-round swing mode and air outlet fins that rotate automatically by 360° to provide for large-scale cold air distribution.

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.

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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

Naturally better cooling with convenience

Whether used for cooling during the hot summer time, as a fan for an additional boost of freshness, to generate a pleasant sea breeze or to optimally humidify dry heating air in the heating period – the Air cooler PAE 31 demonstrates the benefits of its turbo spin technology in all operating modes and impresses with outstanding features.

Flow-optimized turbo spin cold air distribution

You're familiar with the problem for sure: in rooms and flat with nooks and crannies and high ceilings, the refreshing cold air does not always reach all areas of the room. As soon as you get up from your desk or sofa and cross the room, you change from a cool temperature zone to a warm one. The reason for this is an insufficient distribution of the cold air in the room.

The PAE 31 cools with no limits!

The turbo spin technology of the air cooler generates an even circulation of the cold air in the entire room. The warm air flowing into the device from three sides is cooled and then directed onto the aerodynamically shaped rotor blade of the extremely fast rotating impeller of the high-performance fan. The deeply curved fan blade ensures a particularly powerful turbulence and an enormous acceleration of the air current. The extremely compressed turbulent air current gushes out of the device as a tornado-like cold air column that revolves around itself and advances up to 10 metres into the room with a powerful volume of up to 1,000 m³/h. If the discharged air current hits the wall or ceiling, it is deflected from there to all sides. In a constant circulation the air returns to the rear of the air cooler along the walls and the ceiling. It is sucked in once more to start a new cycle. This effective turbo spin method ensures maximum circulation and mixing of the room air. The cooling effect of the air current can be felt in the entire room!

For comparison: A conventional air cooler with a comparable air flow rate blows out the cold air across a distance of approx. 6 metres. With an increasing distance, the cooling effect of the air current decreases. Owing to the turbo spin technology of the PAE 31 the air ejection distance is increased to up to 10 metres. The strongly accelerated cold air is deflected by the walls and distributed to all nooks and crannies of the room.

Night mode with reduced noise emission, adapted air flow and pleasant air freshening function

If the summer heat keeps you awake, the PAE 31 provides relief with its ultra-silent night mode. A preset programme of different fan stages lets you drift off to sleep while providing for optimal cooling. The ventilation performance is reduced every 30 minutes until the air cooler permanently cools and refreshes with minimal noise at the lowest fan stage.
Like a natural wind mode, the air freshening function provides a pleasant air flow comparable to a sea breeze by alternately increasing and reducing the ventilation intensity.

Programmable timer for energy-saving auto switch-off

The timer function of the PAE 31 allows for time-controlled cooling with individually preset switch-off time. The operating time until auto switch-off can be set to 1 h, 2 h, 4 h or 8 h. The timer function is recommended, for example, when the device is used in the office. After an 8-hour working day, the device switches off fully automatically so you do not even have to think about it.

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

With the PAE 31 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 3 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 can be furthermore ideally used as an effective humidifier 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.

The PAE 31 4-in-1 air cooler provides the necessary level of natural cooling and freshness at any temperature.


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.

Thermohygrometer BZ20M with air cooler PAE 31

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 31 – special equipment features

PAE 31 – dimensions
The PAE 31 convinces with the following performance characteristics: humidification performance 1.1 litres per hour, 6-litre water tank, air volume 1,000 m³ per hour and 3 fan stages. The scope of delivery also includes 2 ice packs and a remote control.
PAE 31 – honeycomb filter
Proven honeycomb technology times 3: thanks to their open structure, the 3 honeycomb filters (left, right, rear) offer particularly favourable evaporation properties when soaked, thus cooling the air that is passed through in a natural way. Thanks to the drying function, the filters can be dried automatically prior to storage to avoid mould growth.
PAE 31 – functions
4-in-1: air cooling, ventilation, air freshening and humidification. The sucked-in air is cleaned with the help of three integrated air filters and humidified and cooled by three evaporation filters – triple power for air purification, e.g. to remove animal hair and house dust, as well as for humidification.
PAE 31 – control panel
The air cooler PAE 31 offers convenient equipment features: air cooling, air freshening, ventilation, 3 fan stages, swing function, night mode and 8-hour timer. The settings can be carried out either on the clearly arranged control panel or also comfortably using the remote control.
PAE 31 – filling the water tank
With its 6-litre water tank, the PAE 31 offers more than 5 hours of cooling at an evaporation performance of 1.1 litres per hour. The cooling capacity can be additionally increased by using the supplied ice packs.
PAE 31 – turbo spin technology
A high-performance blower with turbo spin technology emits the refreshing cold air currents up to 10 metres into the room. Reflection on walls and ceilings ensures an extensive distribution of the cool air throughout the room.
PAE 31 – swing function
The air outlet fins are provided with an automatic 360° swing function and thus always distribute the cool air optimally over large indoor areas. It is also possible to activate spot cooling without swing function wherever freshness and cooling are needed.
PAE 31 – easy transport
Thanks to easy-running wheels and the convenient recessed handle which also serves to store the IR remote control, the powerful PAE 31 air cooler can be easily transported to the location where fast cooling is required.

Powerful turbo-spin cooling just where it is currently needed

PAE 31 – turbo spin technology
No matter where you are in the room: the cooling and freshness of the PAE 31 can be felt evenly in all areas due to the innovative turbo spin technology. You do not have to sit directly in the air current.
PAE 31 – in the restaurant
When things are heating up in the restaurant, the PAE 31 helps you keep cool. Whether for cooling at the counter or for large-scale refreshment of the entire room – the PAE 31 has sufficient cooling reserves for an agreeable feel-good climate.
PAE 31 – in the children's room
The PAE 31 puts a stop to sleepless summer nights. For use in the children's room, the air cooler has a night mode with adapted cooling and ventilation performance promoting sleep.
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
  • High-performance blower with turbo spin technology and 10 m range
  • 3-sided intake of the warm air for optimum humidification
  • 3 separate evaporation filters for a particularly favourable room evaporation performance
  • Natural air cooling with evaporation and honeycomb technology
  • Humidification for a pleasant and healthy room climate
  • Optional operation with two supplied ice packs or ice cubes to increase the cooling capacity
  • High evaporation performance of 1.1 litres per hour
  • 6-litre water tank with filling level indicator
  • Automatic 360° swing function of air flaps and fins for an even distribution in the room
  • Air filter (for animal hair, fluff and dust)
  • Night mode with reduced ventilation performance
  • Easy-to-clean water tank
  • Convenient operation via remote control
  • 3 fan stages
  • 8-hour timer function for automatic switch-off
  • Easy to transport thanks to the convenient recessed handle and wheels
  • Drying function for perfectly hygienic storage
  • Suited 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 31 show in Trotec online shop

Aircooler PAE 31

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149.95 £ 69.95 £ incl. VAT Show net price (VAT not included)


Technical data

Technical data
General information
  Article number
Air flow rate
  Level Max. [m³/h] 1,000
  Air discharge speed [m/s] 3.9
  stages 3
Evaporation capacity
  Max. evaporation performance [l/h] 1.1
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] 6
Electrical values
  Mains connection 220 - 240 V, 50 Hz
  Power input [W] 60
Electric connection
  Connection plug CEE 7/16
  Cable length [m] 1.8
Sound values
  Distance 1 m [dB(A)] 55
Control panel
  LED display
  Length (packaging excluded) [mm] 265
  Width (packaging excluded) [mm] 310
  Height (packaging excluded) [mm] 620
  (packaging excluded) [kg] 5.5
Equipment, features and functions
Functions and features
  Suitable for operation with freezer packs
  Cooling by evaporation with honeycomb technology
  Ventilation function
  Air freshening function
  Air cooling function
  Energy saving mode
  Turbospin technology
  360° air circulation
  Swing function
  Water filling level indicator
  Warning signal to indicate an empty water tank
  Night mode
  Supplied ice packs 2
Timer function
  Switch-off time can be preselected
  Air filter
  Honeycomb filter
  Plastic wheels
  Recessed handles
  Parking brakes
Housing design

 standard equipment

 optionally available

 not available



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