Rapid heater

Rapid heaters are the optimal heating solution for bathrooms, guest toilets and rooms that are used only rarely.

Optimal heat generation at specific points
Use in closed indoor spaces
Economical operation as a booster heater
Numerous modes ensure excellent heating convenience

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Vitoplanar rapid heater

On cool days there are often times when heat is required quickly. A room may have cooled down a little after the occupants have left, or perhaps a newborn baby needs a nappy change. In such cases, a rapid heater is the appliance of choice.

As the name suggests, a rapid heater supplies the room with the required warmth in only a few seconds. It is also very compact and can be placed practically anywhere where there is a power connection. Once connected and switched on, it supplies the room with the right level of heat in next to no time. This rapid heating is possible mainly due to the way the fan heaters work.

A fan heater warms the indoor air

A rapid heater, often also known as an electric fan heater, heats the indoor air and keeps it at the set temperature. It does this using a built-in fan which draws in the indoor air and directs it across a heating element. The heated air is then blown out through the outlet. As soon as the set room temperature is reached, it is maintained by the appliance through repeated heating.

A radiant heater usually has a high limit safety cut-out. This switches the appliance off when the set temperature level is exceeded, which guarantees safe operation. Once the cause has been remedied, the appliance starts up again within a few minutes (cooling time). Only one socket is needed to operate a fan heater.

Numerous modes ensure excellent heating convenience

Vitoplanar rapid heaters from Viessmann are equipped with several modes and guarantee exceptionally high operating convenience. Amongst others, these include:

  • Timer mode: The appliance heats according to the activated time program.  
  • Comfort mode: The appliance maintains the set comfort temperature. Standard value: 21.0  °C. Use this setting for comfortable room temperatures when you are present.
  • Setback mode: The appliance maintains the selected setback temperature. Standard value: 18.0  °C. Use this setting e.g. at night or when you are absent for a few hours.
  • Frost protection: The appliance maintains the room temperature at 7.0 °C. Use this setting to protect an unused room from frost damage.
  • Adaptive start: In timer mode, the switching times of the heating appliance are adjusted so that the set room temperature is reached by the programmed start time.
  • Open window detection: To avoid unnecessary energy consumption during ventilation, the appliance automatically switches to frost protection mode for one hour when the window is open. The symbol (open window detection) flashes. You can end frost protection mode after ventilation either manually or using the buttons.

Different options for different applications

A fan heater usually runs on electricity. This makes it safer than gas powered appliances, where there is a risk of suffocation and fire. A fan heater can also be very flexible.

Infrared radiant heaters can be installed indoors

In contrast to a conventional electric fan heater, an infrared radiant heater emits the generated heat to the room where it is installed as radiated heat. Instead of heating the recirculation air, it radiates heat to the walls and objects. Being very similar to the sun's rays, radiant heat is pleasantly enjoyed by most people. You can find more information on this on the Vitoplanar infrared heaters  page.

The benefits of fan heaters at a glance

Very fast heat generation is one of the benefits of an electric radiant heater. There are no long start-up times, compared to a night storage heater. In addition, electric fan heaters are extremely compact and can be installed wherever there is a power connection. There are other points in favour of buying an appliance of this type.

Optimal heat generation at specific points

While conventional radiators heat the entire room, a radiant heater transfers heat more appropriately. It can heat just a partial area, while the surrounding area remains slightly cooler.

Use in closed indoor spaces

No naked flames, flue gas or CO₂ emissions are produced during operation. An electric radiant heater can therefore be installed in any living space without a second thought. Operation is usually intuitive and fuel storage is not required as in the case of gas radiant heaters.

Economical operation as a booster heater

Even though the electricity costs are relatively high, an electric radiant heater can still provide economical heating. It is important to note that such appliances are not designed for use as sole heaters. The exceptions are very rarely used rooms such as holiday homes or guest toilets. In practice, a rapid heater is used as an  electric bathroom radiator  that temporarily supports the existing conventional radiators.

Video: Heating with electricity

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