TROTEC TTK 66 E Review UK 2026
Quick verdict
Score: 7.5/10
Best for: Tackling damp, condensation and drying laundry in 50 m²
Not for: Cold, unheated spaces below about 15°C, where a desiccant model copes better
Bottom line: A practical dehumidifier (24 litres/day, compressor) for keeping humidity down and preventing mould and condensation.
The Trotec TTK 66 is a practical option for removing dampness from a room, with a rating for up to 50 m² and a drying capacity of up to 24 litres per day. This dehumidifier review highlights that the dehumidifier includes a laundry drying mode, plus an automatic humidistat that can be set from 35 to 80% and shown via LEDs. A timer is also included, and auto humidity control can reduce the need for frequent manual adjustments, though drying results depend on room conditions and how consistently the space is kept closed.
Key specifications
| Spec | Value |
|---|---|
| Daily extraction | 24L/day |
| Max room area | 50 m² |
| Humidistat | 35 - 80% |
| Modes | Laundry, auto |
| Display/timer | LED, timer |
Pros
- Removes up to 24 litres/day
- Compressor type - efficient in heated rooms
- Laundry mode for drying clothes indoors
- Humidistat sets and holds a target humidity
Cons
- The water tank needs regular emptying unless you plumb in the drainage hose
- Running it adds to electricity use, so a humidistat or timer helps keep costs down
- Compressor models are less effective in cold rooms below about 15°C
Extraction Rate and Performance
A 24 L/day extraction rate is the main performance figure stated for the Trotec, aimed at controlling dampness in rooms up to 50 m². The unit's humidistat lets users target a relative humidity range of 35 to 80%, helping it maintain the chosen level rather than running continuously. In normal use, the compressor-based design removes moisture from the air until the set point is reached, then modulates as needed. A laundry drying mode is also included to support faster moisture removal for wet items, although results depend on room conditions and airflow.
Room Size and Coverage
With a stated capacity of 24 litres per day, the dehumidifier is positioned for rooms up to 50 m², which indicates it is intended for typical bedrooms, offices, or utility spaces rather than large open-plan areas. Coverage depends on how much moisture the room contains, because higher moisture loads can move performance beyond the ideal range. For best results, the unit should be installed with clear air circulation, and the door should be kept closed while it is running. It may still assist in rooms around 40 - 50 m², but results vary where walls, floors, or laundry add ongoing moisture.
Tank Capacity and Drainage
Beyond room size and dampness load, the Trotec's water handling matters most for tank volume and drainage options. The unit removes up to 24 litres per day, so in heavier moisture conditions it can fill its collection tank quickly. For convenience, it supports continuous draining, allowing water to flow away without frequent emptying, if the outlet is fitted correctly. If continuous draining is not used, the stored water needs to be emptied before the tank fills, otherwise operation may pause.
Noise Level
Noise level is an important comfort factor when the dehumidifier is used in living spaces, since compressor dehumidifiers typically produce an audible sound during operation. In practical terms, the unit's noise depends on how hard it is working to remove moisture, and this will vary with room conditions, target humidity, and whether laundry mode is also activated. The device also offers an automatic humidistat setting range of 35-80%, and that range can affect running intensity.
Energy Use and Running Costs
Energy use matters because a compressor dehumidifier's power draw can rise when it is working harder to reach the set humidity, and that workload changes throughout the day as moisture levels fluctuate. The Trotec TTK 66 is designed to remove up to 24 litres per day, so in damp conditions it may run more frequently than in drier rooms. For a 50 m² space, energy costs depend on how long it stays on, which is influenced by automatic humidity control (35 to 80%). Using the laundry drying mode can increase runtime, since wet fabrics add moisture continuously.
Modes and Controls
The Trotec features practical operating modes and controls to adjust dehumidifying performance to changing indoor conditions rather than running continuously at a fixed setting. It offers automatic humidistat control with selectable humidity levels from 35% to 80%, allowing the unit to respond as rooms become wetter or drier. For laundry drying, a dedicated Laundry Mode is available, designed to help clothes dry faster than air-drying naturally. An LED humidity display guides operation, and a timer function can be used to plan run time. Exact behaviour and interaction between the controls, modes, and timer are not stated.
Compressor or Desiccant
For whole-home damp control, the dehumidifier is a compressor dehumidifier, not a desiccant unit, because compressor models typically remove moisture by cooling and condensing water vapour, then collecting it in a tank or drainage setup. The unit is rated for up to 50 m² and uses an automatic humidistat to control humidity between 35-80%. This approach suits rooms where air temperatures stay broadly stable, because condensation depends on cooled air. In very cold or extreme conditions, the drying effect can be less consistent than expected. It also includes a laundry drying mode that uses the same compressor process.
Who Is This Dehumidifier For?
The Trotec's TTK 66 E is aimed at people who want dependable humidity control in a single room or a small area, up to 50 m², rather than whole-home moisture removal across many zones. It suits households dealing with dampness in bedrooms, basements, or utility spaces, where targets can be set using the automatic humidistat (35 - 80%). It also includes a laundry drying mode, so it can be useful when clothes need help drying indoors. The unit uses a compressor for steady room regulation, rather than quick, temporary moisture removal, making it a practical fit for those who want consistent control. Performance for larger areas is not stated.
Where to Buy in the UK
Once the room size and dampness needs are within the dehumidifier's stated limits, the next practical step is to identify reliable UK purchase routes, since availability can influence delivery speed and returns. The most straightforward approach is to check major UK retailers such as Amazon UK, John Lewis, Currys, AO, and Argos for clear stock listings and up-to-date availability. Specialist HVAC and dehumidifier sellers may provide more product guidance, but stock can vary for specific models, including the 24L/day version. Online marketplaces can widen choice, but listings may differ on what is bundled, so the full specification and included accessories matter. For best confidence, the automatic humidistat range, laundry mode, and LED display should be confirmed against the product details before ordering.
Frequently Asked Questions
Is this dehumidifier worth it?
If you have damp, condensation on windows, or laundry that will not dry, the Trotec earns its place by pulling moisture out of the air at up to 24 litres/day. It tackles the cause of mould and musty smells rather than masking them - check the current Amazon UK price, as it changes often.
Is the Trotec TTK 66 powerful enough for my home?
The dehumidifier is rated to remove up to 24 litres/day and suits 50 m². The headline figure is measured in warm, very humid lab conditions, so real-world extraction is usually lower - size up if your problem is severe.
What does this dehumidifier cost to run?
Running cost depends on its wattage, how long it runs and your electricity tariff, so it is best checked against the stated power rating rather than a fixed figure. A humidistat helps by switching it off once the target humidity is reached, which cuts running time.
Is the Trotec a compressor or desiccant dehumidifier?
The dehumidifier is a compressor model. Compressor dehumidifiers are the most energy-efficient for typical heated rooms, but become less effective in cold spaces below about 15°C.
How often do you empty the Trotec?
How often you empty the tank depends on the tank size and how damp the air is. For continuous running, look for a model with a drainage hose option.
Can the dehumidifier help dry laundry indoors?
Yes - the Trotec TTK 66 has a laundry mode that runs the fan and compressor harder to speed up drying clothes indoors, which also helps prevent the damp and condensation that indoor drying causes.
Will this dehumidifier stop damp and mould?
By holding the room's humidity down, the Trotec removes the moisture that mould and dust mites need, which helps prevent condensation on windows and musty smells. Existing mould should still be cleaned off; the dehumidifier stops it coming back.