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  1. Products & Services
  2. Machines - 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 ...


TTK 355 S Dehumidifier show in Trotec online shop

TTK 355 S Dehumidifier

This dehumidifier can stand up to the highest of demands and the harshest of conditions. The TTK 355 S convinces with the 1.07 kW compressor and dehumidification performance of max 70 litres/24 h.

1,225.83 £ incl. VAT
Show net price (VAT not included)



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
Amount of air
  Stage Max. [m³/h] 1,000
Recommended room size construction drying
Recommended room size dry keeping
Surrounding conditions
  Min. temperature range [°C] 5
  Max. temperature range [°C] 32
  Min. humidity range [% RH] 32
  Max. humidity range [% RH] 100
Electrical values
  Mains connection 230 V/50 Hz
  Nominal current consumption [A] 5.8
  Power input [kW] 1.3
  Recommended fusing [A] 10
  Rotary piston compressor
  Reciprocating piston compressor
  Type of cooling agent R-410 A
  Amount of cooling agent [g] 650
  GWP factor 2,088
  CO2 equivalent [t] 1.36
  Suction Side pressure [MPa] 1.2
  Discharge Side Pressure [MPa] 4.2
Water tank
  Contents in [Litres] 6
Sound values
  Distance 1 m [dB(A)] 54
  Length (packaging excluded) [mm] 390
  Width (packaging excluded) [mm] 380
  Height (packaging excluded) [mm] 725
  (packaging excluded) [kg] 39
Equipment, features and functions
Automatic defrosting
  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
  Carry/transport handle(s)
  Non-marking full-rubber wheels
  Adjustable bar handle
  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


Protection Cover TTK 355 S show in Trotec online shop

Protection Cover TTK 355 S

Protection Cover for the TTK 355 S dehumidifier.

18.61 £ incl. VAT
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Air filter for TTK 355 S / TFV Pro 1 show in Trotec online shop

Air filter for TTK 355 S / TFV Pro 1

Replacement air filter for the TTK 355 S and radial fan TFV Pro 1.

12.04 £ incl. VAT
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Pro extension cable 20 m / 230 V / 2.5 mm² - Made in Germany show in Trotec online shop

Pro extension cable 20 m / 230 V / 2.5 mm² - Made in Germany

The essential accessories for electric heaters, humidifiers, air-conditioning units etc.: Pro extension cable at a length of 20 m and with a supply voltage of 230 V. All that and it's made in Germany!

32.14 £ incl. VAT
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Alternative products

TTK 355 S with alternative products:

start comparison
TTK 350 S Commercial Dehumidifier show in Trotec online shop

TTK 350 S Commercial Dehumidifier

Quality Made by Trotec: not made in China. TTK 350 S: max. 70 litres dehumidification performance. Produced in Europe and available exclusively at Trotec. This dehumidifier can stand up to the highest of demands and the harshest of conditions.

You save: 371.99 £

831.81 £ 459.82 £ incl. VAT
Show net price (VAT not included)


TTK 380 ECO Commercial Dehumidifier show in Trotec online shop

TTK 380 ECO Commercial Dehumidifier

The dehumidifier TTK 380 ECO with a maximum dehumidification capacity of 80 l / day with an expelled air volume of 950 m³ /h. In addition, the TTK 380 ECO has an operating hours counter and the possibility to drain the accumulating condensate via an external hose.

You save: 479.93 £

902.96 £ 423.03 £ incl. VAT
Show net price (VAT not included)