Dehumidifier TTK 28 E
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  5. TTK 28 E

Comfort dehumidifier TTK 28 E

Top drying power for small rooms

Space-saving design, easy handling

and convincing functions

Small enough to fit in everywhere. Light enough to be applied flexibly. Perfectly equipped to master every challenge. The TTK 28 E was designed specifically for small, heated rooms – and impresses with a high performance.

Thanks to the compact dimensions of the dehumidifier TTK 28 E, you will always find a place where the TTK 28 E can do its job, even in the smallest room. It can, for example, keep living spaces and offices sized up to 15 m² dry reliably – with a daily dehumidification performance of up to 10 litres.

A porthole allows for a clear view into the water tank to keep a constant eye on the filling level. Naturally, a filling level warning light warns of a full water tank and the overflow protection with automatic switch-off guarantees an immediate stop of operation.

Effective and simple

Needless to say, the device also comes with a function for hygrostat-controlled automatic dehumidification. First, a fixed humidity value is selected by means of the target value preselection function. The setting range is between a relative humidity level of 40 % and 60 % in increments of 10 %. When this value is exceeded, the dehumidifier automatically switches itself on and then off again to save energy as soon as the desired target value has been reached.


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

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
Environmentally friendly refrigerant R290

Propane (R290) as environmentally friendly refrigerant in dehumidifiers

Every year, several million tonnes of environmentally harmful CO2emissions (greenhouse gases) are emitted into the air by synthetic refrigerants. For this reason, the utilization of alternative refrigerants has become one of our key objectives. By using propane (R290) as refrigerant, this dehumidifier makes a valuable contribution to protecting our climate.

The natural refrigerant propane (R290) is an organic compound belonging to the group of hydrocarbons. Unlike synthetic refrigerants the environmentally friendly propane (R290) comes with neither ozone depletion potential (ODP = 0) nor a noteworthy greenhouse effect (GWP = 3).

Additional bonus for the environment: Owing to its excellent thermodynamic properties, propane (R290) is a particularly energy-efficient refrigerant thereby additionally reducing your energy costs.


Small in size, impressively high performance

The TTK 28 E offers convenient features such as the washable air filter. A cable and plug holder, the retractable, convenient carrying handle as well as the steerable wheels facilitate any change of location from one room to another. All functions can be adjusted quickly and easily on the clearly structured and intuitive control panel.

As a matter of course, it is also possible to have the TTK 28 E operate continuously whilst unattended, thanks to the integrated drainage connection – the ideal solution for continuous operation in hobby rooms or holiday homes, where one cannot always empty the tank.

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.

TTK 28 E – special equipment features

TTK 28 E control panel
The control panel of the TTK 28 E is provided with LED illumination, a clear design and is easy to understand.
TTK 28 E air filter
The easily removable air filter retains lint and animal hair and can be quickly and easily wiped or washed out.
TTK 28 E water tank
The removable water tank has a storage capacity of 2 litres. The device stops automatically when the tank is full and indicates this via LED.
TTK 28 E rear view
In order to continuously drain the condensation water, a pipe can be connected on the rear of the device. The integrated plug holder can be found on the back of the device.
TTK 28 E – target value preselection
The TTK 28 E is provided with an automatic hygrostat-controlled dehumidification function. The desired humidity level can be set to target values of 40, 50 and 60 % RH via the LED-illuminated control panel.
TTK 28 E – functions
When the desired humidity level is reached, the compressor switches off automatically. The fan keeps running while the display remains switched on. When the value is exceeded, the device is automatically activated.
TTK 28 E – drying laundry
The TTK 28 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.
TTK 28 E – permanent mode
In the permanent mode, the TTK 28 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.

TTK 28 E – at home
Whether you use it at home, in the office or in the bedroom – the dehumidifier TTK 28 E is a very compact and light device in its performance class. The easily accessible air filter is easy to clean and filters animal hair, fluff, lint, dust as well as preventing bacterial growth.
TTK 28 E – quick transport to the required location
The device is equipped with a convenient foldable transport handle. This and the plug holder on the rear of the TTK 28 E enable a particularly simple and comfortable change of location.
Technical data by comparison

All TTK dehumidifiers in direct comparison:

To find the dehumidifier which exactly meets your requirements, please consult the concise overview of all TTK dehumidifiers 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:

  • Hygrostat-controlled automatic dehumidification system with target value preselection between 40 and 60 % RH in steps of 10 %
  • When the desired humidity level is reached, the compressor switches off automatically. The fan coasts down and switches off with delay. The display does not switch off. When the value is exceeded, the unit is automatically activated.
  • Auto restart function to be used in combination with an external timer
  • LED control panel
  • Continuous mode
  • Easily accessible air filter, easy to clean. Filters animal hair, fluff, lint, dust as well as preventing bacterial growth.
  • Filling level warning light to indicate a full water tank
  • Overflow protection with automatic switch-off
  • Automatic air circulation defrost system
  • Connection for external condensate drain
  • Very compact and light device in its performance class
  • Integrated plug holder
Tested for safety

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

Room size suitability of the TTK 28 E

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

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” …


TTK 28 E Dehumidifier show in Trotec online shop

TTK 28 E Dehumidifier

You save: 80.00 £

179.95 £ 99.95 £ incl. VAT Show net price (VAT not included)


Technical data

Technical data
General information
  Article number
Dehumidification performance
  At 30 °C / 80 % RH [l/24h] 8.56
  Max. [l/24h] 10
Air flow rate
  Level Max. [m³/h] 100
Recommended room size construction drying
Recommended room size dry keeping
Ambient conditions
  Min. temperature range [°C] 5
  Max. temperature range [°C] 32
  Min. humidity range [% RH] 35
  Max. humidity range [% RH] 85
Electrical values
  Mains connection 220 - 240 V, 50 Hz
  Nominal current consumption [A] 1.43
  Power input [kW] 0.33
  Recommended fusing [A] 6
Electric connection
  Connection plug CEE 7/7
  Cable length [m] 1.6
  Reciprocating piston compressor
  Rotary piston compressor
  Minimum room size [m²] 4
  refrigerant R290
  Amount of refrigerant [g] 40
  GWP factor 3
  CO2 equivalent 0.00012
  Pressure suction side [MPa] 1
  Pressure outlet side [MPa] 2.6
Water tank
  Contents in [l] 2
Sound values
  Distance 1 m [dB(A)] 44
  Length (packaging excluded) [mm] 237
  Width (packaging excluded) [mm] 300
  Height (packaging excluded) [mm] 410
  (packaging excluded) [kg] 11
Equipment, features and functions
Automatic defrost system
  Air circulation / electronic
  Hot gas
Automatic dehumidification
  Electronic hygrostat
  Non-stop dehumidification
  Analogue hygrostat
  stages 1
Condensate tank monitoring
  Container available
  Filling level warning light to indicate a full water tank
  Overflow protection with automatic switch-off
  Water filling level indicator
Room air filter
  Readily accessible
  Ionizer selectable
  Pre-filter Synthetic fibre
Timer function
  Switch-on time preselectable
  Switch-off time can be preselected
Functions and features
  Automatic operation
  Continuous operation
  Memory function
  Cable holder
  Fan rundown function
  Auto restart function
  Child lock
  Noiseless night operation in whisper mode
  Comfort button
  Laundry drying function
  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
  Hose included in the scope of delivery
  Recommended hose size [mm] 14
  Condensate pump
Control panel
  LED display
Adjustable air discharge direction
  Swing function
Housing design
  Steel coated
  Stainless steel
  Metal plastic composite housing

 standard equipment

 optionally available

 not available



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