Electric mode wall heating, how they work

Wall heating

How does wall heating work?

With wall heating, the heating elements - usually narrow water pipes - are laid invisibly in the wall under the plaster. There is hot water in the pipes that heats the entire wall. This radiates the heat evenly over the entire surface. The temperature is regulated via a thermostat.

So that the wall heating can give off the heat well, the pipes must be covered with a certain plaster. Often it is clay plaster, which has a positive effect on the room climate due to its material properties. By absorbing excess moisture and releasing it again when necessary, clay keeps the humidity in the room constant.

Installation of a wall heater

Wall heating can be installed in a new building as well as subsequently in the course of a renovation. The installation in the wall is realized either with the help of wet technology or dry construction.

  • Wet system: The fitter attaches the pipes to the plaster with the help of various holding systems. He then completely plastered the pipes so that they are no longer visible.
  • Drywall method: Heating plates, which are usually prefabricated, are used for this. Similar to plasterboard, these can be quickly fixed to the substrate. The panels are already equipped with heating pipes and insulation material.

With both methods it is important that the wall heating is not covered permanently and / or over a large area. If it is difficult to find a suitable place for the heater due to the large amount of furniture in the room, the ceiling can be used as a heating surface.

Wall heating on outside walls

It makes perfect sense to install the wall heating in an outside wall - after all, this is usually the coldest wall. A wall heater installed in an outside wall usually warms the room more evenly. However, large windows can make installation difficult. If the wall is poorly insulated, a lot of heating energy is also lost to the outside.

Wall heating on interior walls

The installation of a wall heater on interior walls, on the other hand, is usually possible without any problems and without major construction work. It should be noted, however, that noticeable air turbulence can arise with a poorly insulated outer wall - namely due to the large temperature difference between the inner wall heated by the heater and the very cold outer wall.

Wall heating energy efficiency

Wall heating can help save energy. Compared to conventional radiators, a lower temperature is sufficient for a pleasant feeling of warmth. The heat is distributed more evenly in the room due to the large-area radiation. No temperature layers form where the warm air collects under the blanket and the feet stay cold. The flow temperature, which is necessary for the wall heating to reach operating temperature, is also lower.

However, wall heating is only really energy-efficient if the insulation of the room or house is sufficient and the heating elements are in the most favorable location in the room.

Advantages of wall heating

  • No visible radiators in the room
  • Pleasant for allergy sufferers, as the heating does not stir up dust
  • No dry heating air
  • Wall heaters - especially on cold outside walls - prevent the formation of mold
  • Uniform heat emission across the entire height of the room
  • Reduces energy costs

Disadvantages of wall heating

The biggest disadvantage of wall heating is that you have to take it into account when planning your room and that the furniture sometimes has to be subordinate to the wall heating. After all, the heating surfaces must not be permanently covered by large pieces of furniture such as floor-to-ceiling shelves, a wall unit or large-format pictures.

In addition, with every nail or dowel that is going to be in the wall, you always have to check where the heating pipes are exactly. This can either be done with appropriate thermal foils, which discolour to indicate where the pipes are running. Or you can spray the wall with a little water, turn the cooled down heater back on and watch where the wall dries first.

Other types of wall heating

The ancient model of wall heating worked with cavities in the walls through which warm air was passed. In this way, the chimneys of tiled stoves can also heat other rooms that do not have direct access to the stove.

Infrared panels that radiate heat can also be attached to walls. They are very flat, take up little space and work with electricity. The connection is made via a socket.

Cold instead of heat: wall heating as air conditioning

Wall heating can basically also be used for room cooling. If cold water flows through the pipes, the room cools down evenly and permanently - without the loud noises and sometimes unpleasant drafts of a conventional air conditioning system. Wall heating can therefore regulate the room temperature all year round and positively influence the room climate.

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