Questions and answers about electric heaters

Frequently asked questions

AeroFlow® electric heaters are an alternative wherever no other heating system (oil, gas) is available or cannot be retrofitted. Furthermore, it can be used as a supplementary heater, for example in combination with a fireplace or a wood/charcoal furnace.

  • Garden and vacation homes
  • Guest room
  • Winter garden
  • subsequently developed rooms (e.g.: attic)
  • Workshop, garage
  • Construction containers, exhibition stands, sales stands
  • Basement, hobby rooms
  • u.v.a.m.

Read everything about the various locations in our blog article “Where can AeroFlow® electric heaters be used sensibly?” .

  • Comparatively low acquisition costs
  • Work anywhere there is a power outlet
  • no specialist required for assembly and installation
  • no heating pipes need to be laid
  • no stockpiling of heating material necessary
  • optimal controllability, short heating times, pleasant heat
  • odorless, no fine dust pollution – reduction of allergy and asthma risk
  • Maintenance-free and durable
  • no costs for chimney sweep
  • flexible and mobile use by means of mobile base or feet (put away/stow away over spring/summer)

More about the advantages of electric heaters

A heating system based on electricity is very common internationally, especially in France, Great Britain, Italy and China. The prevention of soot particles and fine dust contributes to a significantly better indoor and indoor climate and thus reduces the risk of allergies and asthma, especially in growing children.

Heating fuels such as gas and oil are expected to become significantly more expensive in the long term due to declining resource stocks. The electricity price, on the other hand, has been subject to a downward trend for almost 10 years, but it remains largely stable for the end consumer because, for example, the levy for the expansion of renewable energies is regularly increased.

If your electricity provider offers electricity from 100% renewable sources (wind, water, photovoltaic), you would heat your house or apartment without environmental impact. They produce no particulate matter and no greenhouse gases, especially CO2. Thus, you do not heat your rooms at the expense of the environment, but help save resources for future generations and preserve nature.

AeroFlow® technology consists of an ideal combination of specially shaped fins and state-of-the-art, high-density firebricks with excellent heat retention. AeroFlow thus ensures efficient energy conversion into heat and a pleasant indoor climate through radiant and convective heat.

The AeroFlow® electric heaters do not operate continuously, but only for the duration of the heating process (approx. 20 minutes per hour when the room is already heated), after which they switch off and only use the stored heat to generate heat. The surface temperature of the AeroFlow electric heaters reaches 30 to 65 C° depending on the setting.

With AeroFlow electric heaters you can choose between two different controls:

  • Radio controller FlexiComfortApp: programmable, several heaters can be controlled with a separate radio thermostat (optional: expansion of the radio controller with a SmartHomeBox/Domotik interface for controlling the radiators via APP on SmartPhone or TabletPC).
  • Multiregulator FlexiSmart: can be used like a rotary control (+/- buttons), integrated digital LCD display: heating schedule programmable directly on the device or with Intermodul* via app** (* not included; ** free of charge, no subscription)

More about the control options

You can easily order AeroFlow® heaters online (for example, through one of our premium dealers:,, If you need a local specialist company, we will be happy to put you in touch with one. To do this, please let us know in which city you are located. See the following form.

If you are a dealer, specialist company or project customer yourself, please register in our dealer area or send us an e-mail to

The manufacturer provides a functional warranty on the heating element and the body of the radiator for 30 years from the date of first sale. The thermostats and the controllers are guaranteed by the manufacturer for 2 years from the date of first sale. The purchaser’s statutory warranty rights shall continue to exist in addition to the manufacturer’s warranty. The exact regulations are summarized in our warranty conditions.

In case of a complaint, our service team is ready to help you. Please use our complaint form to report your complaint. Alternatively, you can find the warranty certificate in the downloads section. You can fill it out carefully and send it to us by e-mail. We will then get back to you as soon as possible. In case of complaint about side parts or accessories, a replacement product will be sent to you, in the packaging of which you can return the defective part using the enclosed return slip.

The packaging of the electric heaters should be kept until the final and satisfactory functional test, in case of a complaint.

The AeroFlow electric heaters are connected to the power supply via an electrical outlet. Alternatively, it is possible to connect the electric heaters directly into the circuit, in which case an electrician should be consulted (see 10.).

If several AeroFlow electric heaters are connected to the same circuit, its capacity and design must be checked, and circuit protection must be ensured. An electrician should be consulted for this purpose.

No, AeroFlow electric heaters run on the normal electric rate and the household electric meter.

By default, our radiators are manufactured in the color pure white (RAL 9010). In addition to this, we have also included the shades light ivory (RAL 1015), quartz gray (RAL 7039) and anthracite gray (RAL 7016) in our standard program – this means that our heaters can be supplied in these shades from stock as far as possible. However, other RAL colors are also possible. Here you can see the RAL color palette .

Please note: When ordering a special color, the delivery time will increase by approx. 3-4 weeks.

The supplied wall bracket, consisting of two struts, is fixed in the masonry with two dowels and strong screws each. These are included with instructions. For fastening to wood, drywall or other materials, it is advisable to purchase suitable fastening material from a specialized dealer or hardware store. Please seek local advice regarding the dimensions and weight of AeroFlow electric heaters.
In any case, pay attention to the course of the power lines in the flush-mounted when choosing the height of the lower screws to avoid damage to the power lines.

Possible alternatives to the standard wall mount can be found in the accessories section.

If the AeroFlow® electric heaters are attached to the wall bracket, the following distances result:

  • from the floor approx. 8 cm (height flexibly selectable);
  • from the wall about 3 cm;
  • to the window sill approx. 10 cm (flexible depending on the mounting height, the AeroFlow® electric heaters do not necessarily have to be mounted under the windows).

Bathroom radiators are flexible in the choice of mounting height, the distance from the floor is usually 20-30 cm, the distance from the wall – about 8 cm.

The suitability of AeroFlow® electric heaters in terms of room size can be found in the product details. The involvement of an energy consultant is recommended as an option.

Energy consumption depends largely on your personal consumption patterns and heating requirements. In addition, as with any other type of heating, the following factors play a role:

  • Thermal insulation of the room
  • Room size
  • Outdoor temperature
  • Set internal temperature
  • Number, size and insulation of windows
  • Power of the installed radiators
  • other devices in the room (e.g. refrigerators)

The optimal controllability of AeroFlow electric heaters with display or wireless controller with night temperature setback allows to optimize energy consumption. The storage of heat by firebricks ensures that the AeroFlow electric heaters are not in operation continuously, but only for about 20 minutes per hour after heating the room.

The suitability of AeroFlow electric heaters in terms of room size can be found in the product details. The involvement of an energy consultant is recommended as an option

The amount of your energy costs depends largely on the conditions of your electricity provider and the energy consumption. The more the heating is in operation and the higher the desired temperature, the higher the consumption. See also previous question.
In return, you save costs for maintenance, inspection, chimney sweep, exhaust gas measurement, etc. at the time of purchase and in the further course.

Heaters with display controller “FlexiComfort” keep the stored comfort settings. The time of day returns to the factory setting (0 o’clock on Mondays) after approx. six hours. Models with radio receiver differ in their behavior: Their settings are not stored on the radio receiver on the heater, but on the associated thermostat.

Radio receiver FlexiComfortApp (X3D):
After a power failure, whether this is due to night power or a classic power failure, the radio receiver and thermostat establish a connection independently. You do not have to pay attention to anything. The radiator will immediately start heating again if the power failure occurred in a pre-programmed heating time.

FlexiSmart controller:
In the event of a power failure, all settings are retained! Only the time is lost after about 6 to 8 years. The heater will immediately start heating again if the power failure occurred in a pre-programmed heating time or if the temperature requires heating. The also the internet module / gateway saves all settings in case of power failure. The heaters do not need to be paired with the Internet module again.

Of course, our heaters contain only fireclay, which has long been used in the construction of fireplaces and is a well-proven storage material.