Convector comparison 2018

Purchase advice on convector comparison or test 2018

  • Convectors are small heaters that work with air circulation. They suck in cool air masses, heat them up inside and blow out the warm air again. In contrast to radiators or radiant heaters, this not only heats with pure radiant heat, but the air circulation additionally allows so-called convection heat.
  • Convectors are among the direct heating systems. However, they are not designed to heat large rooms. They are z. B. thought as additional heating in near-window areas to keep out the cold that penetrates there.
  • If you want to buy a convector, you should pay particular attention to criteria such as performance, type of mounting and special protection features.

Convector comparison 2018: convector

New buildings are often equipped with generous window fronts. But as the days get colder and cloudy, it also becomes more and more unpleasant on the windows, as the room air cools down there. This can lead to cold air currents in the area of ​​the legs and feet inside the room, which cause an uneasy cold feeling.


Convection is derived from the Latin word "convectum" and means "carried along". A convector thus heats the room by means of thermal conduction.

To compensate for this, the heating is quickly turned a little bit higher. This increases the heating costs, although it would not be necessary. For example, a convector heater can help here. These Prevents the cold air near the window from reaching you and making you even warmer.

In our convector comparison 2018 we would like to explain to you how a convector heater works and give tips on which categories you should pay attention to, if you want to buy the best convector.

  • To compare the infrared heaters

1. How does a convector work?

Convector comparison 2018: heat

Convectors heat the room by circulating air, preventing the cold air near the window from spreading. Source:

This is explained quickly:

  • On the surface of the window panes is the Room air cooled down by the cold outside air, These cold air masses sink towards the ground and at the same time cool the room in this area.
  • If you now put a convector heater in front of the window, the cold air sucked into the convector from below and in the interior past lamellae.
  • These fins in the convection heating are heated by electricity or hot water, so that the fins heat the cool air masses.
  • Subsequently will the heated air is blown out of the convector heater and flows towards the ceiling as warm air rises.
  • This warms the room gradually.
  • As you can see in the picture at the same time a kind of protective wall built as the cold air is prevented from circulating.

Convectors not only heat the room with pure radiant heat, such as radiant heaters or radiators. Since a convection heater deliberately causes an air circulation, one speaks here among other things of convection heat.

Convection is generally understood to mean a vertical flow movement in liquids or gases.

Basically, a convector heater suitable for use in the following scenarios:

  1. as additional heating on cold days
  2. to heat small rooms up to 12 m²
  3. to keep areas warm in front of large glass fronts

2. convector types

A convector radiator is available in many different designs and from many brands and manufacturers. Mainly they let themselves go differ in one point: their assembly, Below we have compared the three types for you:

Radiator convectorconvectorconvector

Convector comparison 2018: comparison

Convector comparison 2018: convector

Convector comparison 2018: convector

Under convector radiator stands for vertical convectors, the Rollers or feet own and thereby can be arbitrarily aligned in the room. Especially with extension cords they are flexible.These electric convector radiators will be attached to the wall and are therefore no longer flexible adjustable. Furthermore, they must be placed close to a power outlet, as they too are operated by mains cable.Underfloor convectors are worked into the ground so that they finish with the floor - So they are a kind of underfloor heating. In our comparison, we did not include them because they should be installed by a professional.
In general, electric convector radiators should only ever be used in addition to proper central heating!

3. Advantages and disadvantages of a convector

  • Convectors are cheap to buy
  • Radiator convectors release heat quickly
  • Heaters can be installed quickly
  • Electric convector radiators can be placed almost anywhere
  • Convectors are available in many sizes and variants
  • Convectors have a relatively high power consumption
  • Air circulation is perceived by some as unpleasant
  • if the convector has a blower, this could be permanently disrupted
  • Convector radiators can raise dust - possibly unsuitable for house dust allergy sufferers

4. Purchase criteria for convectors

In what aspects you should check your desired heater and what it is important to note, we clarify in the following purchase advice.

4.1. Dimensions and installation

Convector comparison 2018: convector

Convectors made of glass look very noble.

Size and installation style determine how flexible you are with the electric heater. Above all, if the convector is to be located in a specific location, it is important to know the largest possible dimensions. Pay special attention to the width of the devices when considering wall mounting. Before buying, it is best to measure the location reserved for the heater and then decide what dimensions the unit may have.

Basically, it is clear: If you want to be able to move the convector and be flexible, there is only one copy available with castors or feet. However, if you are looking for a convector for a fixed place, a wall convector makes sense.

4.2. Heating levels and thermostat

Convector tests show that the more heating stages a heater has, the finer you can set the heat input. Furthermore, a thermostat is very useful when it comes to you to achieve an accurate temperature in your premises.

4.3. Overheating protection and frost protection

Convector comparison 2018: comparison

Convectors with timers are particularly energy efficient.

A built-in overheat protection keeps the convector from blowing away if the heat is too high, The radiator switches off before. Especially with wall convectors, the protection proves to be helpful, since the risk of a discolored wallpaper or even a fire is reduced.

A built-in frost protection is a must-have feature when you use the device z. B. in a winter garden. If this function is installed in a glass convector, it activates when the room temperature drops to zero degrees, This prevents the area from completely cooling down.

5. The difference between convectors, radiators & heaters

The biggest difference is how the individual heaters transport the heat - so whether they work with radiant heat or convection heat:

radiant heat: Radiant heat is the heat that radiates from any body, such as: B. at a radiant heater. There, the heating elements only heat the air that is directly around it.

Especially big Representatives of this type of heating are the heat wave heaters (such as an infrared heater), As they permanently heat objects by the impact of their rays, the room is heated up by the heated furniture emitting radiant heat. Such heaters are intended especially for many square meters.

Convector comparison 2018: heater

convectionHere, the heat is taken up by the air or a liquid and brought to another location by a vertical flow motion called convection. The air or liquid in this case are carriers of heat.

As the name suggests, convectors thus spread their heat through convective heat. Radiators also use convection, They do not transport the heat via air but via water or oil.

Measures against high heating costs

According to TNS Infratest, 62% of Germans avoid permanent ventilation to save on heating costs. 58% decided to start heating as late as possible.

ordinary Radiators, on the other hand, produce a combination of radiant heat and convection heatbecause the heat in the heater is transported by water or gas and the heating then heats the room by radiant heat. Fan heaters also work on this principle. However, they are intended for smaller rooms and areas as convectors.

6. Not suitable for sensitive house dust allergic persons

Because the heaters circulate air during their work and thus stir up dust, they could be a burden for house dust allergy sufferers. That's why we recommend spending a few hours in a room with such a device before buying a convector. It is also advisable to purchase an electric heater without a fan if you want to sleep through the night undisturbed. Not everyone is equally sensitive to the sounds.

Maintenance: To ensure that your personal convector test winner stays in good condition for a long time, it is necessary to have it maintained at least once a year, in order to avoid additional repair costs and to reduce the risk of danger.

7. Convectors at Stiftung Warentest

The Stiftung Warentest has not yet carried out a convector test, but it does offer useful tips in terms of energy saving:

"However, not all rooms need to be heated the same way: the following values ​​apply to well-being temperatures: in the living room 20 to 22 degrees, in the kitchen 18 to 20, in the bathroom 23 degrees, in the bedroom 16 to 18th

Lowering the temperature in a room by 1 degree reduces heating costs by about 6 percent. Lowering the temperature in a poorly insulated 150-square-meter apartment from 22 to 21 degrees can bring a saving of nearly 100 euros per year. "

- Stiftung Warentest Issue 10/2014 -

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