So it's high time to take a closer look at the room temperature and how it is controlled.

Thermostatic valves are clever savings aids

“The correct handling of the heating is particularly
important.”

Dr. Jan Witt, Managing Director of the HEA – Association for Efficient Energy Applications, Berlin

Whether a room temperature is perceived as pleasant depends largely on subjective perception. However, the following can be used as guidelines: A room temperature of 20 degrees is recommended for the living room, dining room and children's room, and 18 degrees for the kitchen. The temperature can be lower in the bedroom, as well as in hallways, here 15 degrees is sufficient. But it shouldn't be less: if individual rooms cool down too much, moisture from the air can condense and mold can form.

To avoid wasting heating energy, the doors between heated and unheated rooms should remain closed.

Mechanical or electronic temperature control

In many apartments and houses, the room heat is regulated via radiator thermostats; this can be done mechanically or electronically. Mechanical control is most commonly used for radiators. The temperature is set manually using the thermostat head. Electronic control offers advantages: These thermostats are equipped with a servomotor, so the temperature can be programmed directly and precisely using a smartphone app, for example.

Electronically controlled thermostats detect a sharp drop in temperature during ventilation and then automatically reduce the heat supply; some require support via window contacts. Using these programmable thermostats saves up to 10 percent of heating energy compared to manual settings.

Set the thermostat correctly with mechanical control

A thermostat's job is to regulate the temperature in a room. It consists of a temperature sensor and a valve that changes the flow of heating water in the radiator.

With a mechanical thermostat, the temperature is set by numbers from one to five. The higher the number, the warmer the room becomes. For example, if "3" is set, this means a room temperature of 20 degrees Celsius - this temperature is maintained until the setting is changed.

Temperature guidelines

The numbers on the thermostat head correspond to the following temperature:

  • 0: closed
  • Star or snowflake: Frost protection at approx. 6 °C (basement rooms)
  • 1: approx. 12 °C (staircase, porch)
  • 2: approx. 16 °C (night reduction, bedroom)
  • 3: approx. 20 °C (living rooms and study rooms)
  • 4: approx. 24 °C (bathroom)
  • 5: up to 28 °C (maximum temperature)

This assignment can vary slightly depending on the manufacturer and model. The exact values ​​can be found in the operating instructions. The night reduction does not have to be set manually; this is usually done centrally via the heating system. It is best for tenants to ask their landlord or property management which regulations apply.

“Thermostat and radiators must not be covered by curtains or blocked by furniture.

Otherwise heat can build up, the temperature sensor detects values ​​that are too high and therefore incorrect, but the room remains cold and the user corrects 'up'! It is best to clear the radiators right at the beginning of the heating season, then the warm air can circulate better in the room and the radiant heat can be used optimally. When ventilating, the thermostats must be turned down. Permanently tilting the windows also causes extreme heat loss because the thermostat no longer tries to heat the room but rather the outside environment to the set room temperature.”

Dr. Jan Witt, Managing Director of the HEA – Association for Efficient Energy Applications, Berlin

You can find more tips for saving energy in your home and garden here .

Source: HEA

Don't forget: A Mimikama fact check! The comparison of e-Porsche and washing machines is extremely flawed!


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