TTK 350 S commercial dehumidifier
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Commercial dehumidifier TTK 350 S

Professional all-rounder for demanding drying operations

TTK 350 S – front view
TTK 350 S – rear view
TTK 350 S – overview

The robust and powerful efficient all-rounder

Black and white combined in a powerful device. The TTK 350 S makes you stop thinking in terms of black and white or good and cheap. It is simply both combined in one device, allowing you to benefit from prices at a Far East level without having to compromise in terms of workmanship and reliability. For the quality of this dehumidifier is no accident – but traditional EU manufacturing.

This high-performance construction dryer dehumidifies rooms with a size of up to 180 m² with a dehumidification performance of up to 70 litres in 24 hours. The desired humidity level can be preselected between 32 % and 100 % RH using the practical rotary switch, and the TTK 350 S then works in a fully automatic fashion thanks to its hygrostat operation. Furthermore it generates a strong air circulation of 1,000 cubic metres per hour.

Not only the plastic-coated metal housing but also the stable carriage construction with bar handle and large transport wheels for maximum mobility demonstrate the robust and durable design of this reliable dehumidifier.

Permanent mode for construction drying applications

The possibility of connecting an external condensate drain – if required with an optional condensate pump – also makes the TTK 350 S ideally suitable for longer unattended dry keeping tasks, e.g. for construction drying.

Performance and safety are the top priorities here!

The operating switch and the filling level warning light are protected from dust and spray water by a protective cap, and a slotted hygrostat rotary switch protects against inadvertent misadjustment of the switch position. The condensation tank indicator light lights up when the condensation tank is full. In addition, the TTK 350 S switches off automatically when the water tank is full.

Inside, a professional hot gas automatic defrost system guarantees effective dehumidification result even at low temperatures, and thanks to the external condensate drain integrated as standard the TTK 350 S is also suited for longer unattended continuous drying applications and for construction drying.

The TTK 350 S is exclusively available only at Trotec and can be optionally delivered with an integrated operating hours counter or MID-compliant dual counter for operation hours and kilowatt hours.

What does MID-compliant mean?

In some areas, the Measuring Instruments Directive (MID) replaces the previous regulation of national authorization and subsequent calibration. As a result, all energy meters in Europe used for energy consumption-based billing have to be MID-compliant from now on.

TTK 350 S – operating switch and filling level warning light protected from dust and spray water
TTK 350 S – optional operating hours counter
TTK 350 S – optional MID-compliant dual counter for operating and kilowatt hours

Investment protection for your drying devices

Particularly during construction drying operations in summer or when drying water damages, it is very likely that climate conditions arise which may significantly shorten the lifetime of condenser dryers – regardless of the make. We as manufacturer care about the fact that for process-related reasons your condenser dryers often have to be replaced much too soon, hence we have prepared a valuable practical recommendation relating to the investment protection of your drying devices. Click here to find out more ...

Technical construction drying

Did you know that every construction dryer is at the same time a commercial dehumidifier, but that not every commercial dehumidifier is automatically a real construction dryer? Here you can find out the reasons for this, and why hot gas defrosting makes the decisive difference ...

TTK 350 S – special equipment features

In spite of its compact dimensions the TTK 350 S is outstanding with a dehumidification performance of 70 l/24h for rooms sized up to 180 m² or 450 m³. Owing to the rotary piston compressor, its carriage design of robust metal can be transported and stored in any position.
TTK 350 S – dimensions
A protective cap protects the operating switch and the filling level warning light from dust and spray water. The slotted hygrostat rotary switch offers protection against unintended changes to the setting of the switch position.
TTK 350 S – operating switch and filling level warning light
The integrated recessed handles make the transport and positioning of the TTK 350 S to every desired location even easier.
TTK 350 S – recessed handles
The external condensate drain that comes as a standard makes the TTK 350 S ideal for longer and unattended continuous drying applications.
TTK 350 S – external drain integrated as a standard
The TTK 350 S ensures automatically that the target value entry is kept constant. When this value is exceeded, the device switches off automatically and also switches on again automatically when the value falls below the target entry. The target value preselection is between 32 % and 100 %, depending on the air humidity value in the room which is to be reached.
TTK 350 S – automatic mode
The TTK 350 S comes with function for automatic defrosting. When the room temperature is below 11 °C, the evaporator would freeze during dehumidification. This is why the TTK 350 S carries out fully automatic self-defrosting, if required.
TTK 350 S – automatic defrosting
The TTK 350 S is provided with a memory function. In the case of an unexpected switch-off due to a power interruption, this function makes the device restart with the previously selected setting as soon as the power supply has been restored.
TTK 350 S – memory function
In the permanent mode, the TTK 350 S dehumidifies the room air in continuous operation. Therefore it is ideally suited for longer unattended dry keeping tasks and professional construction drying applications. The condensate produced in the course of the dehumidification process should be discharged via the connectable drain hose, so that you do not have to keep emptying the water tank.
TTK 350 S – permanent mode
The commercial dehumidifier TTK 350 S, by its hygrostat-controlled automatic operation, provides for an optimum room climate, e.g. in storage halls. The target value can be adjusted via a rotary switch from a minimum value to the maximum value.
TTK 350 S – storage hall
Shells can be dried perfectly and easily in no time with the powerful and comfortable commercial dehumidifier TTK 350 S. This prevents major delays caused by necessary drying processes in the construction project, even at low temperatures.
TTK 350 S – construction shell
The TTK 350 S is also an excellent choice when it comes to its use for water damage restoration. The process of drying the spaces can be substantially accelerated in such cases of damage, as a consequence considerably reducing mould formation.
TTK 350 S – water damage restoration

A few practical benefits:

  • Development, design, production: 100 % Trotec
  • High dehumidification performance even at low temperatures
  • Robust plastic-coated metal housing
  • Stable carriage construction
  • Portable and easily stored anywhere thanks to its rotary compressor
  • Automatic hygrostat-controlled dehumidification
  • High-quality hot gas automatic defrosting
  • MID-compliant dual counter for operating and kilowatt hours (optional)

Proper energy billing for existing equipment without meters?

You're using this or another electrical appliance without MID-compliant energy consumption meter of which you have to report the current consumption to insurance companies? Then the BX50 MID is the perfect solution. Just install it between the device and a fixed socket – done!

Fan assistance for construction drying

Fan assistance

Quicker construction drying by air circulation

The drying time can be reduced by half if construction dryers and fans are combined. In doing this, each dryer is supplemented with a fan, which significantly improves the drying performance and thus also the duration of the drying process.

The increased air circulation results in a quicker evaporation of the humidity, for the higher the flow rate at the material surface, the sooner will the drying process be completed.
The axial fans of the TTV series and TTV-S series are especially suitable to provide assistance with regard to the drying process.

External condensate pump

Accessory tip:

External condensate pump for continuous operation

This optionally available condensate pump is compatible with all TTK-S models from Trotec and is ideally suited for longer, unattended dry keeping applications. With a pump height of up to 5 metres the condensate can be pumped from the collection container of the construction dryer into a larger container or outside. This makes it possible to let the construction dryer run in continuous operation without a full collection container interrupting the dehumidification process.

Further information can be found here.

Technical data by comparison

All commercial dehumidifiers of the TTK-S series by direct comparison:

To find the commercial dehumidifier which exactly meets your requirements, please consult the concise overview of commercial dehumidifiers of the TTK-S 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


Technical data

Technical data
General information
  Article number
Dehumidification performance
  At 30 °C / 80 % RH [l/24h] 55
  Max. [l/24h] 70
Air flow rate
  Level Max. [m³/h] 1,000
Recommended room size dry keeping
Ambient conditions
  Min. temperature range [°C] 5
  Max. temperature range [°C] 32
  Min. humidity range [% RH] 50
  Max. humidity range [% RH] 90
Electrical values
  Mains connection 220 - 240 V/50 Hz
  Nominal current consumption [A] 6
  Power input [kW] 1.3
  Recommended fusing [A] 10
  Rotary piston compressor
  Reciprocating piston compressor
  Type of cooling agent R-454C
  Amount of refrigerant [g] 650
  GWP factor 146
  CO2 equivalent 0.0949 t
  Pressure suction side [MPa] 0.5
  Pressure outlet side [MPa] 1.8
Water tank
  Contents in [Litres] 6
Sound values
  Distance 1 m [dB(A)] 54
  Length (packaging excluded) [mm] 530
  Width (packaging excluded) [mm] 500
  Height (packaging excluded) [mm] 965
  (packaging excluded) [kg] 39
Equipment, features and functions
Automatic defrost system
  Hot gas
Automatic dehumidification
  Non-stop dehumidification
  Analogue hygrostat
  Electronic hygrostat
  stages 1
Condensate tank monitoring
  Container available
  Shut-off when full
  Indicator container full
Room air filter
  Readily accessible
  Ionizer selectable
Operating hours counter
  Operating hours counter
  Power meter
  Non-marking full-rubber wheels
  Carry/transport handle(s)
  Carriage design
  Adjustable bar handle
  Plastic wheels
  Rubber-tyred metal wheels
  Swivel casters with parking brakes
Condensate drain
  Hose connection possible
  Hose included in the scope of delivery
  Condensate pump
  Recommended hose size [mm] 19
Control panel
  Control knobs
  Digital display
  Protective bar
  Comfort button
Shelf life
Housing design
  Steel coated
  Stainless steel
  Metal plastic composite housing

 standard equipment

 optionally available

 not available



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