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Comfort dehumidifier TTR 57 E
Home Comfort
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  4. Adsorption dehumidifier TTR-series
  5. TTR 57 E

Comfort dehumidifier TTR 57 E

Easily keep an eye on the humidity level – even in unheated rooms.

High dehumidification performance

Equally impressive as the numerous application possibilities are the performance values of the light and compact 7.5 kg TTR 57 E. With a dehumidification performance of up to 9 litres per day the it reduces the room's humidity to as low as 40 %, if required.

The timelessly elegant desiccant dehumidifier TTR 57 E recommends itself as an ideal solution for the permanent dehumidification and dry keeping of even unheated rooms sized up to 20 m². When conventional condenser dryers can only achieve an insufficient or inefficient dehumidification due to the low room temperatures, the desiccant dehumidifier TTR 57 E can play to its strengths even at temperatures of as low as 1 °C. Another advantage of the tried and tested desiccation technique: The TTR 57 E requires neither compressor nor cooling agent or defrost pauses. Its operation is agreeably energy-efficient and does not generate any distracting noises.

Variably applicable – also for drying laundry

The dehumidifier TTR 57 E is excellently suited for the dehumidification of cold basement rooms, for instance to prevent damp walls and harmful mould growth. In the unheated garage the TTR 57 E reduces the humidity level so as to protect the cardboard boxes stored there or to prevent the formation of rust. In the conservatory the dehumidifier helps to fight the unwelcome condensation forming on the glass and used on boats it prevents the harmful moisture inside the cabins. The variability of the TTR 57 E is completed by a convenient assistance mode for drying damp laundry in living rooms, bedrooms or utility rooms.

Product brochure Practical guide to air dehumidification


Moisture in the bathroom, basement or bedroom can lead to mold. All relevant information about our comfort dehumidifiers can also be found in the product brochure. Download the PDF directly here.

To the PDF document

Auto restart function

Auto restart function

In case of an unexpected switch-off due to a power interruption, the auto restart function (or “Memory function”) makes the device restart with the previously selected setting as soon as the power supply has been restored. This makes the dehumidifier also suitable for combined use with a timer.

With LED colour indication of the optimum humidity level

A quick glance instantly lets you know whether the room humidity level is in the green range. The colour LED display at the device front visualizes the current humidity level in an appealing manner:

Ideally, the room's humidity level ranges between 50 % and 70 %.

Optimum humidity level at 50–70 %

The air is very dry, the humidity level amounts to less than 50 %.

Too dry at less than 50 %

The air is very humid, the humidity level exceeds 70 %.

Very humid at more than 70 %

Gentle laundry drying with dehumidifiers

Apart from ambient air dehumidification, a dehumidifier can be conveniently used for drying laundry – either in an assisting way or as a full replacement for a conventional dryer. The laundry drying function (also referred to as clothes drying mode or SuperDry function) is comparable to traditional air drying outside.

Dehumidifiers offer the benefit of drying the laundry as gently as in the nature outside. Colours retain their brilliance and the life span of clothes is longer than with conventional dryers – and all this with a substantially lower power consumption.

Furthermore, even sensitive materials such as wool, silk or synthetic fibres can be dried without any problems. In contrast to pure air drying, the laundry feels much softer and more pleasant on your skin.

Laundry drying can also be performed with dehumidifiers without an additional laundry drying function. The target value of the air humidity must then be set in accordance with the desired residual humidity:

Cupboard dry: 46 % of relative air humidity

Iron dry: 58 % of relative air humidity

Skin dry: 65 % of relative air humidity

Laundry-drying function

The convenient functions of the TTR 57 E at a glance

  • Target value preselection:
    Set your desired humidity value of 40 %, 50 %, 60 % or 70 %.
  • Continuous operation:
    In continuous operation mode the device dehumidifies continually at its maximum performance.
  • Function for drying laundry: 
    Using the device as room air and laundry dryer you can select the following settings: cupboard dry (46 % RH), iron dry (58 % RH) or pre-dried (65 % RH).
  • Ventilation operation:
    You can choose from 3 fan stages for drying room air circulation.
  • 24-hour timer: 
    Programme the desired switch-on or switch-off time.

Furthermore, the TTR 57 E is equipped with a filling level warning light indicating a full condensation tank, a connection for external condensation draining as well as washable activated carbon and air filters for the filtration of dust and animal hair.

The TTR 57 E combines reliable drying and plenty of comfort

TTR 57 E control panel
The LCD on the neatly arranged control panel indicates the current room temperature, the current humidity level, the set target humidity or the hours on the timer as desired.
TTR 57 E air filter
Air filter and activated carbon filter remove dust and animal hair from the air. You can also order a suitable HEPA filter to counteract bacteria, fine particulates and pollen.
TTR 57 E water tank
The 5 litre water tank is emptied quickly and easily. An integrated overflow protection switches the dehumidifier off in due time and indicates that the tank needs to be emptied by means of an acoustic warning signal. You can also connect a discharge hose for continuous operation.
TTR 57 E connection for condensate drain
In order to continuously drain the condensation water, a pipe can be connected on the rear of the device. The power cable can be wound up properly and clamped in the mounting bracket.
TTR 57 E functions
The TTR 57 E is equipped with a hygrostat-controlled dehumidification function with real-value humidity selection. Using the innovative integral display, the desired humidity value can be set to target values between 40 and 70 % RH in increments of 10 %. Once the desired humidity value has been reached, the compressor will switch off automatically. If the value is exceeded, the device is automatically activated.
TTR 57 E timer function
Use the practical timer function to switch the device on or off after a defined number of hours. The timer can be programmed in 1 or 24 hours. This prevents unnecessary operating periods and allows you to adapt the dehumidification to your individual rhythm of life.
TTR 57 E laundry drying
The TTR 57 E may also be used as a room air laundry dryer to dry wet laundry in living spaces or utility rooms. In this way, you speed up the drying process of the clothes and prevent the humidity contained on the clothes from condensing in the room and from becoming a hotbed for mould.
TTR 57 E permanent mode
In the permanent mode, the TTR 72 E dehumidifies the room air in continuous operation. This is especially suitable for cellar or storage spaces which are subjected to mould formation by excess humidity. To avoid that you constantly have to drain the water tank, a condensate drain hose can be connected.

TTR 57 E in the hobby room
In order to prevent the formation of unwelcome mould that is dangerous to your health in cellars, hobby rooms or on cool corners and walls exposed to dampness in the first place, we recommend using a dehumidifier continuously and right from the start.
TTR 57 E as an effective tumble dryer
Whether in living room, bedroom or in the children's room, – with its comfort operation for the temperature-dependent automatic humidity control, the display of the relative humidity level and its laundry drying and timer functions, the dehumidifier TTR 57 E provides for a perfect indoor climate at all times.

Standard features

  • For preselectable operating modes also for drying laundry
  • Digital real-value display of room temperature and humidity level
  • Colour LED for current humidity
  • 24-hour timer function
  • Auto restart function to be used in combination with an external timer
  • Three-stage fan
  • Integrated air filter and activated carbon filter for additional air purification by extraction of dust and animal hair (HEPA filter is optionally available)
  • Overflow protection with automatic switch-off
  • Connection for external condensation draining

Click to enlarge the chart in a new window...

Which device to use for which room size?

Here you find a specific performance chart for the suitability of each comfort dehumidifier. It indicates the room size in combination with an area and volume scale. Click to enlarge in a new window ...

Product finder for dehumidifiers

We help you find the suitable dehumidifier that meets your requirements!

With our product finder you can quickly and easily choose the ideal dehumidifier for your application scenario.
Click here to go directly to the product finder

Tested for safety

Benefit from the Trotec brand quality guaranteeing high value, safety and functionality. Via the registered GS mark the inspection authority Intertek certifies that, if used foreseeably and as intended, the device does not pose a risk to the health and safety of the user.

Save electricity and money on dehumidification

With our socket hygrostat BH30 you can additionally save money when dehumidifying damp rooms or keeping rooms dry. The programmable switch is simply plugged in between the dehumidifier and socket to regulate the dehumidification process based on the measured humidity level.

Once the desired target humidity is reached, the hygrostat disconnects the device from the mains until dehumidification is required again. By switching off the compressor and fan during standby times, the device's energy consumption is noticeably reduced.

The initial acquisition costs of the BH30 will have been amortized in a minimum of time.

Moreover, many dehumidifiers only offer rough target value setting for optimum humidity. The hygrostat BH30 allows the room humidity level to be adjusted in increments of 1 % from 20 % to 90 % and thus offers significantly more precise target humidity selection.

Thermohygrometer BZ05 and design weather station BZ06

Our recommendation for climate control:

The room thermohygrometer BZ05
Simultaneous display of room temperature, humidity level and time or date as well as an additional feel-good indication.

The design weather station BZ06
Simultaneous indication of room temperature, humidity level, date, time, weekday and symbolic weather forecast. Supplies helpful information for preventing mould growth.

Adsorption, condensation or Peltier dehumidifier?

Trotec, your dehumidification expert, has compiled the most important facts in a reader-friendly overview!

Direct link to “Practical knowledge of dehumidifiers” …

 standard equipment

 optionally available

 not available


Desiccant Dehumidifier TTR 57 E show in Trotec online shop

Technical data

Technical data
General information
  Article number
Dehumidification performance
  At 30 °C / 80 % RH [l/24h] 8.5
  Max. [l/24h] 9
Air flow rate
  Level Max. [m³/h] 185
Recommended room size construction drying
Recommended room size dry keeping
Ambient conditions
  Min. temperature range [°C] 1
  Max. temperature range [°C] 32
  Min. humidity range [% RH] 35
  Max. humidity range [% RH] 90
Electrical values
  Mains connection 220 - 240 V, 50 Hz
  Nominal current consumption [A] 3.7
  Power input [kW] 0.73
  Recommended fusing [A] 10
Electric connection
  Connection plug CEE 7/7
  Cable length [m] 1.8
  Reciprocating piston compressor
  Rotary piston compressor
  Amount of refrigerant [g]
Water tank
  Contents in [l] 5
Sound values
  Distance 1 m [dB(A)] 47
  Length (packaging excluded) [mm] 232
  Width (packaging excluded) [mm] 340
  Height (packaging excluded) [mm] 511
  (packaging excluded) [kg] 7.5
Equipment, features and functions
Automatic defrost system
  Hot gas
Automatic dehumidification
  stages 3
Condensate tank monitoring
  Container available
  Filling level warning light to indicate a full water tank
  Overflow protection with automatic switch-off
Room air filter
  Readily accessible
  Ionizer selectable
Timer function
  Switch-on time preselectable
  Switch-off time can be preselected
Functions and features
  Continuous operation
  Laundry drying function
  Colour LED display for humidity
  Display of the relative humidity level
  Memory function
  Automatic fault diagnosis system
  Automatic operation
  Fan function
  Auto restart function
  Child lock
  Night mode
  Comfort button
  Carry/transport handle(s)
  Plastic wheels
  Rubber-tyred metal wheels
  Non-marking full-rubber wheels
  Swivel casters with parking brakes
  Adjustable bar handle
Condensate drain
  Hose connection possible
  Recommended hose size [mm] 11
  Condensate pump
  Hose included in the scope of delivery
Control panel
  LED display
Adjustable air discharge direction
  Swing function
Housing design
  Metal plastic composite housing
  Steel coated
  Stainless steel

 standard equipment

 optionally available

 not available



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