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  1. Products & Services
  2. Products ‑ HighPerformance
  3. Dehumidification
  4. Condensation dehumidifiers, mobile
  5. Commercial dehumidifiers of the TTK‑S series
  6. TTK 355 S

TTK 355 S commercial dehumidifier

The new value-for-money leader in the 70 litre class

Reduce high levels of relative humidity in minimum time or easily keep large rooms dry – the TTK 355 S is in its element, this is what it was made for.

This becomes possible because of a clever combination of a strong 1.27 kW rotary compressor and a quality fan for air flow rates of up to 1,000 m³/h.

Thanks to the high air circulation, the tuned heat exchange system is always able to feed extreme humidity from the ambient air for quick drying. Up to 70 litres of humidity can be removed from the room air per day with just one TTK 355 S in this manner.

At the same time, compared with other defrost systems, the high-quality hot gas automatic defrost of the TTK 355 S guarantees a much more efficient dehumidification performance without defrost pauses on a time interval during which no dehumidification occurs.

Common location changes and use in rough construction site conditions are no problem for this condenser dryer:

Thanks to the ergonomic construction and carriage design with a bar handle and large wheels, the TTK 355 S can easily be transported over uneven terrain or up and down stairs – the rotary compressor makes it possible to transport it anywhere. And the non-marking rubber wheels leave no marks on your floorboards or other sensitive undergrounds.

A special enclosure protects the electronic components of the dehumidifier from hazardous dust or moisture, which can interfere with the functionality and durability of the electronics.

The enclosure is in no way inferior to the impressive inner values: All components of the TTK 355 S are reliably protected and attractively combined in the tried and tested German industrial design – protected prototype.

Even in storage, the TTK 355 S makes a good impression – while taking up surprisingly little space. Due to its two practical stacking grooves on top, equally sized TTK‑S devices can be safely stacked to save space during transport and storage.

Clearly arranged control panel – protected by protective bars. (1)

The serial operating hours counter of the TTK 355 S commercial dehumidifier is optionally available as a dual counter for operating and kilowatt hours. (2)

A special enclosure reliably protects the TTK 355 S dehumidifier electronics from dangerous inclusions. (3)

Two stacking grooves make it possible to stably stack equally sized TTK‑S commercial dehumidifiers to save space. (4)

A powerful condensate pump with a pump performance of up to 50 m distance and a maximum pump height of 4 m is also available for permanent drying with the TTK 355 S.

This can be used to permanently drain condensation from whole stories of buildings. (5)



A few practical benefits:

  • Development, design, production: 100 % Trotec
  • High dehumidification performance even at low temperatures
  • Maximum dust and dampness protection for all electrical components
  • Very easy to maintain construction
  • Optimal handling
  • Portable and easily stored anywhere thanks to its rotary compressor
  • Practical stacking groove for stable, space-saving storage and transport
  • Stackable with equally dimensioned models
  • Tried and tested German industrial design – protected prototype

A handy protective cover is optionally available for all commercial dehumidifiers of the TTK-S series.

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 ...


Luftentfeuchter TTK 355 S show in Trotec online shop
Luftentfeuchter TTK 355 S + Dualzähler MID-konform inklusive Einbau show in Trotec online shop

Technical data

Technical data
General information
  Article number
Dehumidification performance
  At 20 °C / 60 % RH [l/24h] 27
  At 30 °C / 80 % RH [l/24h] 55
  Max. [l/24h] 70
Air flow rate
  Level Max. [m³/h] 1,000
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] 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
  refrigerant R-454C
  Amount of refrigerant [g] 650
  GWP factor 146
  CO2 equivalent 0.0949
  Pressure suction side [MPa] 0.6
  Pressure outlet side [MPa] 2.2
  Max. permissible pressure [Mpa] 3
Water tank
  Contents in [Litres] 6
Sound values
  Distance 1 m [dB(A)] 54
Functions and features
  Automatic fault diagnosis system
  Operating control lamp
  Room temperature sensor
  Automatic switch-off
  Operating button for draining residual water
  Auto restart function
  Connection for external condensate drain
  Memory function
  Fan rundown function
  Laundry drying function
  Selectable ionisation
  Internal drying function
  Child lock
  Night mode
  Length (packaging excluded) [mm] 390
  Width (packaging excluded) [mm] 380
  Height (packaging excluded) [mm] 725
  (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
  Overflow protection with automatic switch-off
  Filling level warning light to indicate a full water tank
Room air filter
  Readily accessible
  Ionizer selectable
Operating hours counter
  Operating hours counter
  Power meter
  Carry/transport handle(s)
  Non-marking full-rubber wheels
  Adjustable bar handle
  Carriage design
  Plastic wheels
  Swivel casters with parking brakes
Condensate drain
  Hose included in the scope of delivery
  Hose connection possible
  Condensate pump
  Recommended hose size [mm] 19
Control panel
  Protective bar
  Digital display
  Comfort button
Shelf life
Housing design
  Steel coated
  Stainless steel
  Metal plastic composite housing

 standard equipment

 optionally available

 not available



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