Oil-filled radiators TRH 20 E / TRH 21 E
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Oil-filled radiators TRH 20 E / TRH 21 E

Maximum heating capacity at minimum costs. Quick, energy-efficient and durable.

TRH 20 E - 9 fins
TRH 21 E - 11 fins
TRH 20 E / TRH 21 E - control panel
TRH 20 E / TRH 21 E

Hot temperatures for cold days

On chilly and damp or even freezing cold days, the cold may not only bother you while you're outdoors but it may also creep into the house or office, making you feel unpleasantly cold indoors as well. In the transitional periods in autumn or spring, the main heating is often still switched off despite cold outdoor temperatures. Here a powerful and mobile heat source helps to provide for pleasant warmth nevertheless. When the heating season starts in winter, body and soul need an extra amount of feel-good warmth all the more. The two oil-filled radiators TRH 20 E and TRH 21 E provide for an agreeable atmosphere in interior spaces even when it is freezing cold outside.

The two devices that are structurally identical when it comes to their appearance differ with regard to the following properties:

Oil-filled radiator Heating fins 3 heating levels Heating-up time Room size
TRH 20 E 9 800 / 1,200 /
2,000 watts
10 min. up to
25 m² / 60 m³
TRH 21 E 11 1,000 / 1,500 /
2,500 watts
8 min. up to
30 m² / 75 m³

The appropriate heating capacity for every heat demand:

With their noiseless heating capacities that can be activated in 3 powerful heating levels, the two oil-filled radiators TRH 20 E and TRH 21 E supply steplessly adjustable temperatures – without a long warm-up time. After only a few minutes, the pleasant warmth spreads an agreeable feeling.

Good to know: Modern oil-filled radiators are still provided with the tried and tested heating fins, since this design ensures a maximum heating surface with an optimum heating capacity and effectiveness. The thermal oil used in the radiator is an excellent thermal energy reservoir, so that you can still enjoy a long lasting heat output even up to 30 minutes after the heating device has been switched off.


From permanent heating to the frost monitor

With their 3-level adjustable heating capacity, the two heating devices TRH 20 E and TRH 21 E supply thermostat-controlled temperatures in the range from 10 - 35 °C. The oil-filled radiators work in a completely noiseless, odourless fashion and without raising any dust, and therefore they are well suited for the use in households of allergy sufferers or in the bedroom.

The mobile radiators are also suitable for heating rooms that are used irregularly like for example conservatories, guest rooms, garden houses, or also workshops and offices. In unheated garages and cellar rooms the radiators as frost monitors also provide reliable protection against frozen water pipes and further frost damage.


Thermostat-controlled heating cost saver

The desired temperature level is adjusted via a continuously variable control dial thermostat. When the target room temperature has been reached, the oil heating automatically switches to the lowest heating level with reduced energy consumption. If the temperature value falls below the preset temperature, the radiator automatically switches to the higher heating level to reheat the room as quickly as possible. This temperature control takes place in an unnoticed fashion, the room temperature always remaining at a constant level. Positive side effect: The room can never be overheated and you do not blow unnecessary energy costs into the air!

Clean warmth for breathing freely – also perfect for allergy sufferers

The oil-filled radiators TRH 20 E and TRH 21 E heat more efficiently and cleanly than a fan heater And in addition, it works far more quickly than slow, permanently installed heating systems. The fanless operation ensures that no dust is raised in the heating mode. In contrast to conventional heaters with a heating coil, there are also no unpleasant combustion odours, which especially makes it possible to allergy sufferers and asthmatics to breathe freely. The room air remains pleasantly clean, odourless and free from airborne irritants.

Safety in any situation

Whether there are romping children, high-spirited pets or guests who act in an inadvertent fashion – the two compact heating devices prove a firm stand thanks to their broadly designed rollers. If the oil-filled radiators nevertheless actually start to sway in the heat of the moment, the integrated tilt protection switch switches off the device automatically. In addition, a safety thermostat reliably prevents the operating temperature from being exceeded, which may for instance occur if the radiator is covered by jackets or other clothes. In this case, the device is switched off immediately by the overheating protection.

The convenient cable winder reliably prevents the 1.4-metre power cable of the device from becoming a dangerous trip hazard when the device is transported and stored. Owing to the smooth-running rollers and the integrated carrying handle, TRH 20 E and TRH 21 E are perfect for being used flexibly in more than one room. Wherever you need warmth – just take your heating device with you, even while it's still hot.

All in all, theoil-filled radiators TRH 20 E and TRH 21 E are the perfect cost-effective and fuel-efficient heating solution for the temporary and permanent heating of small to medium-sized rooms.

TRH 20 E / TRH 21 E – applications

This is how oil-filled radiators can supply warmth effectively

Oil-filled radiators are designed for continuous use since they can fully substitute a wall radiator. With their heating fins oil-filled radiators may look a lot like "normal" heaters – but quite contrary to them use electricity to heat the oil within. The so-called thermal oil is heated by electric current and gives off the heat to the room air via the heating fins. By the way, oil-filled radiators are usually equipped with heating fins because they form a larger surface, thus making the heating process very effective. Since the devices are mobile, they can be positioned in any room wherever heat is required.

The functional principle of an oil-filled radiator

Why is a radiator filled with oil and not with water? The reason for this is the fact that water expands when it is heated, and that it does not store heat quite as well. The thermal oil used in radiators, in contrast, has a much higher storage capacity. Even after the oil-filled radiator is switched off, it gives off heat for another good half an hour.

Since the thermal oil is also a good insulator, heating resistors can be directly immersed in the oil, which makes the heat exchange again more effective. Then there is also the weight, because oil is lighter than water. This makes oil-filled radiators considerably more light-weight and easy to transport.

Functional principle of oil-filled radiators
Frost monitor function

Frost monitor function

Ideal for short-term property vacancies or temporarily used rooms

Using the stepless thermal control of our mobile oil-filled radiators you can also operate the devices in frost monitor operating mode. The heating device is then automatically activated by a thermostat to protect the rooms from frost and prevent excessive cooling. Functioning as frost guards, the oil-filled radiators are not only ideally suited for landlords and real estate companies – they also offer benefits for private and business people, who can thus keep vacant rooms and garages free from frost. Particularly rooms, conservatories or cellars which are not connected to a central heating system can be kept warm reliably in this way.

TRH 20 E / TRH 21 E – special equipment features

Compact dimensions: The oil-filled radiators TRH 20 E and TRH 21 E only require little space, and with their timeless design they blend in seamlessly with any room environment. The structurally identical models differ with regard to their length by 80 mm. In 3 heating levels, they offer heating capacities of up to 2,000 W or 2,500 W.
TRH 20 E – dimensions
Compact dimensions: The oil-filled radiators TRH 20 E and TRH 21 E only require little space and with their timeless design they blend in seamlessly with any room environment. The structurally identical models differ with regard to their length by 80 mm. In 3 heating levels, they offer heating capacities of up to 2,000 W or 2,500 W.
TRH 21 E – dimensions
Available with 9 or 11 heating fins: Whether you want to heat rooms of a size up to 25 m² or 30 m² – the more fins, the greater the amount of heat that can be radiated by the radiator surface. Even after switching off, you benefit from long lasting feel-good warmth with a reheating time of approx. 30 minutes.
TRH 20 E / TRH 21 E – number of fins
Owing to their 3 heating levels, automatic thermostat control and the option of being used as a frost monitor, the two oil-filled radiator models TRH 20 E and TRH 21 E offer low-noise comfort warmth and a great deal of flexibility.
TRH 20 E / TRH 21 E – properties
Easy to handle! The two oil-filled radiators come with a steplessly adjustable thermostat and 3 heating levels. The operating control lamp indicate whether the devices are already heating.
TRH 20 E / TRH 21 E – control panel
If the generally very stable heating devices are knocked over accidentally, they are directly switched off. This is provided for by the integrated tilt protection switch. The two oil-filled radiators are also reliably protected against overheating.
TRH 20 E / TRH 21 E – safety
The integrated cable winder prevents dangerous trip hazards, sorts things out and makes it possible to stow the radiators away quickly and easily.
TRH 20 E / TRH 21 E – cable winder
The practical recessed grip allows for easy transport of the two radiators – even when the radiators are still hot.
TRH 20 E / TRH 21 E –carrying handle
Thanks to the low-friction rollers that are mounted to the feet, the mobile oil-filled radiators can be rolled quickly and easily to any location.
TRH 20 E / TRH 21 E – low-friction rollers
Ideal as additional heat sources for your home or a holiday home that has been unused for some time.
TRH 20 E / TRH 21 E, application at home
The ideal heating solution for draughty corners, rooms that are rarely used, and cooled conservatories.
TRH 20 E / TRH 21 E, application in the conservatory
The mobile heating devices also provide pleasant warmth when you're working in the shop.
TRH 20 E / TRH 21 E, application in the workshop
The two oil-filled radiators TRH 20 E / TRH 21 E quickly and easily heat hobby rooms, basement rooms or party cellars.
TRH 20 E / TRH 21 E, application in the hobby room

A few practical benefits:

  • Heating capacity of 2,000 or 2,500 W for quick and cosy warmth
  • 3 heating levels (TRH 20 E: 800 W / 1,200 W / 2,000 W, TRH 21 E: 1,000 W / 1,500 W / 2,500 W)
  • Effective 9 or 11 fin radiator
  • Short heating time: full heat output in max. 8 – 10 minutes
  • Heat accumulator with liquid heating medium: prolonged heat radiation even after switch-off
  • Steplessly adjustable thermostat
  • Frost monitor function
  • Noiseless heating
  • Maximum security thanks to overheating and tilt protection
  • Operation indicator light
  • Practical cable winder for quick organization
  • Integrated castors and carrying handle for safe transport even when hot
Tested for safety

Benefit from the Trotec brand quality guaranteeing high value, safety and functionality. Via the registered GS mark the inspection authority Intertek certifies that, if used foreseeably and as intended, the device does not pose a risk to the health and safety of the user.

Technical data by comparison

All TRH-E oil-filled radiators in direct comparison:

To find the oil-filled radiator which exactly meets your requirements, please consult the concise overview of all oil-filled radiators of the TRH-E 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

BN30

Optimum room temperature control with the socket thermostat BN30

Just install it in the socket and connect it to the heating or cooling device on the socket thermostat BN30, and you can have your heating or cooling unit automatically switched on and off by the BN30 depending on the temperature. The socket thermostat available as an accessory is individually adjustable within a temperature range from 5 °C to 30 °C.

Radio thermostat BN35 with timer switch for the socket

Radio thermostat BN35

With the radio thermostat BN35 you can easily determine at which room temperature your heating or cooling unit will switch on or off using the remote control. The BN35 set consists of a radio-controlled socket and a radio thermostat. Simply plug the radio-controlled socket in between a wall outlet and your heating or cooling unit. Place the radio thermostat within approx. 20 metres in the place where the room temperature is to be measured. As an alternative, time-controlled regulation can also be carried out.

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Technical data

Technical data
General information
  Article number 1.410.000.710
Heating capacity
  Level 1 [kW] 0.8
  Level 2 [kW] 1.2
  Level 3 [kW] 2
  Level Max. [kW] 2
Effective range
  Suitable for rooms sized up to [m²] 25
  Suitable for rooms sized up to [m³] 60
  Min. room temperature setting [° C] 10
  Max. room temperature setting [° C] 35
Electrical values
  Mains connection 220 - 240 V/50 - 60 Hz
  Max. power input [W] 2,000
  Nominal current consumption [A] 8.7
Electric connection
  Connection plug CEE 7/7
  Cable length [m] 1.4
  Overheating protection
Safety feature
  IP type of protection IP20
  Protection class I
Dimensions
  Length (packaging excluded) [mm] 120
  Width (packaging excluded) [mm] 390
  Height (packaging excluded) [mm] 500
Weight
  (packaging excluded) [kg] 6
Equipment, features and functions
Mobility
  portable
Functions and features
  9 heating fins
  Steplessly adjustable thermostat
  Tilt protection
  Frost monitor function
  Operating control lamp

 standard equipment

 optionally available

 not available

TRH 21 E

Technical data
General information
  Article number 1.410.000.711
Heating capacity
  Level 1 [kW] 1
  Level 2 [kW] 1.5
  Level 3 [kW] 2.5
  Level Max. [kW] 2.5
Effective range
  Suitable for rooms sized up to [m²] 30
  Suitable for rooms sized up to [m³] 75
  Min. room temperature setting [° C] 10
  Max. room temperature setting [° C] 35
Electrical values
  Mains connection 220 - 240 V/50 - 60 Hz
  Max. power input [W] 2,500
  Nominal current consumption [A] 10.9
Electric connection
  Connection plug CEE 7/7
  Cable length [m] 1.4
  Overheating protection
Safety feature
  IP type of protection IP20
  Protection class I
Dimensions
  Length (packaging excluded) [mm] 120
  Width (packaging excluded) [mm] 480
  Height (packaging excluded) [mm] 500
Weight
  (packaging excluded) [kg] 8
Equipment, features and functions
Mobility
  Plastic wheels
  Recessed handles
Functions and features
  11 heating fins
  Steplessly adjustable thermostat
  Tilt protection
  Frost monitor function
  Operating control lamp

 standard equipment

 optionally available

 not available

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This product is only designed for use inside well insulated rooms or for occasional use.