Trotec TTK 66 E
(18 reviews)
A staple of the professional drying industry, adapted for the home: the Trotec TTK 66 E extracts up to 24 litres of water a day for a room of up to 50 m².
Buy on AmazonAs an Amazon Associate, I earn from qualifying purchases.
Key features
- Extraction: Up to 24 L/day, rooms up to 50 m² (125 m³)
- Tank: 3-litre removable tank, level window, automatic shut-off
- Humidistat: Adjustable from 35% to 85% relative humidity
- A professional drying brand at an accessible price for 24 L/day
In detail: Trotec TTK 66 E, electric dehumidifier 24L/day
Trotec is a well-known name among building trade professionals and construction drying-equipment rental firms, and the TTK 66 E brings that expertise to a consumer version built for basements, garages, utility rooms and living spaces up to 50 m² (125 m³). Its rated extraction reaches 24 litres of water a day, a generous figure for this price bracket, useful against condensation, early mould and damp odours.
Its compressor draws in ambient air and passes it through a refrigeration circuit running on R290 refrigerant, a more environmentally friendly option than older gases. The moisture captured collects in a removable 3-litre tank fitted with a level viewing window and an automatic shut-off once full; a fitting also allows an external drain hose to be connected for continuous, unattended operation.
The built-in humidistat adjusts from 35 to 85% relative humidity: once the chosen target is reached, the unit idles and kicks back in as soon as humidity rises again. Laundry mode speeds up drying a load of washing hung indoors, continuous running suits very damp rooms, and a timer adjustable up to 24 hours lets you schedule cycles. An LED display shows the room's relative humidity in real time.
On the features side, a washable air filter traps dust and pet hair, though without HEPA filtration. The unit auto-restarts after a power cut and remains portable despite its 14 kg, with dimensions of 51 x 35 x 24.5 cm. Its main weak point remains noise, rated at 48 dB(A), noticeably higher than newer, quieter models on the market, which limits overnight use in a bedroom.
In the end, the Trotec TTK 66 E targets rooms where effectiveness and price matter more than quiet running: a basement, garage, utility room or storage space. For a bedroom where quiet counts, a newer model built specifically for that use is the better fit.
Technical data
Detailed characteristics
Additional information
| Brand | Trotec |
|---|---|
| Model | TTK 66 E |
| Type | Compressor dehumidifier |
| Extraction capacity | Up to 24 litres per day |
| Recommended coverage | Up to 50 m² (125 m³) |
| Water tank | 3 litres, removable, with level viewing window |
| Continuous drainage | Fitting for an external drain hose |
| Humidistat | Adjustable from 35% to 85% relative humidity |
| Modes | Automatic (humidistat), laundry drying, continuous running |
| Timer | Adjustable up to 24 hours |
| Fan speeds | 2 |
| Filter | Washable air filter, traps dust and pet hair |
| Display | LED screen, real-time relative humidity |
| Refrigerant | R290, eco-friendlier option |
| Noise level | 48 dB(A) |
| Power | 440 W maximum |
| Dimensions | 51 x 35 x 24.5 cm (H x W x D) |
| Weight | 14 kg |
| Functions | Auto-restart after power failure, auto shut-off when tank is full |
| Energy class | A |
Comparison
At around £180 to £340, the Trotec TTK 66 E is often compared with the Meaco Arete One 20L, in searches like "cheap 20-25 litre dehumidifier" or "Trotec vs Meaco dehumidifier". Here is how the two compare, based on each manufacturer's published specifications.
| Criterion | Trotec TTK 66 E | Meaco Arete One 20L |
|---|---|---|
| Extraction | Up to 24 L/day | Up to 20 L/day |
| Tank | 3 litres | 4.8 litres |
| Noise level | 48 dB(A) | 38 to 40 dB(A) |
| Filtration | Dust filter, not HEPA | Medical-grade HEPA H13 |
| Manufacturer warranty | 2 years | 5 years |
| Price observed | Around £180 to £340 | Around £240 |
The Meaco Arete One 20L has the edge on quiet running, HEPA filtration and warranty length. The Trotec TTK 66 E banks on slightly higher extraction and generally sits at a lower price point, at the cost of noisier running and basic filtration. For a room where quiet is not the priority, the TTK 66 E remains a sensible budget-conscious choice.
Our tester's verdict: Christophe Delpuech
Christophe Delpuech: Set up in a semi-basement utility room prone to condensation in winter, the TTK 66 E quickly showed what you would expect from a brand more used to building sites and trade professionals: blunt, no-nonsense extraction, with the 3-litre tank filling up in under a day during the first few weeks. The adjustable humidistat let me set a target around 55% and leave the unit to idle on its own once it got there, handy for not having to think about it day to day. Laundry mode helped out with a clothes airer set up nearby, drying noticeably faster than air-drying in a closed room. One thing worth flagging before buying: the unit is clearly audible at full power, a constant drone that makes it a poor fit for overnight use in a bedroom, unlike newer, quieter models. The washable air filter stays basic, with no HEPA filtration, which limits its appeal for anyone also looking to purify the air. For a basement, utility room, garage or a room where noise is not a concern, the TTK 66 E remains a solid, proven choice, at a price noticeably lower than higher-end models of the same capacity.
Frequently asked questions: Trotec TTK 66 E, electric dehumidifier 24L/day
Trotec rates it for rooms up to 50 m² or 125 m³, with a maximum extraction of 24 litres of water a day under favourable conditions. In a larger room, effectiveness gradually decreases.
Yes, with a rated noise level of 48 dB(A), it is clearly audible at full power, making it a poor fit for overnight use in a bedroom. It suits a basement, garage or utility room better.
Yes, a fitting allows an external drain hose to be connected to remove water continuously, avoiding the need to manually empty the 3-litre tank during heavy use.
It adjusts from 35 to 85% relative humidity. Once the chosen target is reached, the unit idles automatically and resumes dehumidifying as soon as humidity rises above the target value again.
It carries a washable air filter that traps dust and pet hair, but without HEPA filtration. To purify the air as well as dehumidify, a model with a HEPA H13 filter such as the Meaco Arete One remains the better fit.
More products in the "Dehumidifier" range
Klarstein DryFy 20
Check price (12)
With a 5-litre tank, continuous drainage and a dedicated laundry-drying mode, the Klarstein DryFy 20 dries out a damp room of up to 22 m² with ease.
Meaco Arete One 12L
144.00£ (15)
The quietest of the Arete One range: from just 35 dB(A), this compact 12L dehumidifier fits into a bedroom without ever drawing attention to itself.
Meaco Arete One 20L
Check price (13)
Meaco's flagship living-room dehumidifier: up to 20 L/day extracted, built-in HEPA H13 purifier, just 38 dB, backed by a 5-year warranty.
Meaco DD8L Pro
Check price (3)
A desiccant technology that stays effective even below 10°C: the Meaco DD8L Pro dries out a cellar, garage or unheated second home.
Page published on 5 August 2026