The construction of a wall heater


The wall heating is getting stronger and stronger. More and more builders and renovating homeowners consider installing such a heater. For this it is important to know their functional principle and the structure. Following you can read about the construction of a wall heater and its special features.

Various principles for heating

Even the ancient Romans knew the wall heating. In addition to the floor heating, it was an important part of a heating system. In the last few centuries, the heating principle has again found application in large-scale tiled stoves. Compared to conventional radiators, the principle differs significantly:

  • conventional radiators: heat by convection
  • Wall heaters and large tiled stoves: radiant heat

Functional principle convection heaters

In convection heating, the room air is heated. At the same time, this heat increases, which leads to a high heating demand. To heat a room above 18 degrees Celsius with a conventional convection heating system, each additional degree of extra heat requires around six percent more energy. In addition, dust particles are whirled up with the convection air, which should be of interest especially to asthmatics and allergy sufferers.

Operating principle radiant heating

Radiant heating works according to a completely different principle. Here, the room air is not heated. Rather, illuminated bodies and objects are warming up, while the room air itself is less heated. With a sensed heat by radiant heat of 21 degrees prevail only about 18 degrees. Thus, this principle can also be used to save money when heating, because the room air just does not need to be heated so much.

The construction of the wall heater

The principle of action is based on the large radiating surface. From this it can already be deduced that this heater has a large space requirement. The actual principle is derived from the floor heating. As with this heater, a heating coil is laid in the wall, which usually carries water. Another principle is that hot air is passed through hollow walls (for example in tiled stoves).

Modular design or build

There must be sufficient insulation under the heating coils. The wall heating itself can either be purchased in individual modules in dry construction as part of drywall (conventional drywall as well as precast concrete) or is laid as a heating coil on the wall and then embedded in plaster (wet laying).

The plaster in wet-laid wall heaters

When plastering preferably materials such as silicate plaster, lime plaster, gypsum plaster or loam plaster should be used. Plasters with an excessively high cement content (more than 1 percent) tend to harden strongly and can then fall off the wall over a large area.

Installation position of the wall heating in rooms

Preferably, the wall heating in the outer wall (of course from the inside) laid. Here, however, there is the problem with windows. The more window area is available, the smaller the area for wall heating and thus their efficiency. In the old building comes in the wall heating nor the problem of a possibly poor thermal insulation added.

Therefore, wall heaters are often mounted on interior walls. Here, however, there is the risk that the heating is adjusted by furniture and then also can not work, since not the room air is heated. So it should be well considered whether a wall heater is eligible.

Tips & Tricks

Here you can read about how to build a wall heater yourself.

Product Image: Trophayy / Shutterstock


Video Board: Dimplex Construction Heater