FAQs - Answers to frequently asked questions


Hardware requirements

What are the minimum requirements for the hardware and the operating system?

flixo requires the same hardware as a CAD product.

flixo runs under Windows 10 and Windows 11 (64-bit OS).

Materials and components

What materials and components are already embedded in flixo?

There are more than 1,000 material data and boundary conditions from various international standards and national fact sheets included. The database can be added individually.

Further, many reusable parts - the components - are included in the component database. The component database can be added individually.


Who sells flixo?

In Switzerland, Austria, the United Kingdom, Scandinavia and other countries inside and outside Europe flixo is sold directly by Infomind GmbH.

In Germany, France, Italy, Czech Republic, Middle East and China flixo is sold by our partners. More information you can find in section Distributors.


Virtual machine

Can I install flixo on a virtual machine?

Yes, this is possible for all purchased version, the trial version can't be installed in a virtual environment. The only restriction is that flixo needs access to a physical USB port for the license key.


Does flixo also run on the Mac?

Yes, flixo - except the trial version - runs on a Mac if Windows is installed.

Empty recycle bin

Why deleted files are not displayed in the Recycle Bin after the copy protection key is connected to my computer?

This is a known problem of Windows 7 or Windows Server 2008R2. It is a general problem depending on the configuration of an attached USB drive, which occurs not only with CodeMeter devices. The problem is noticed by Microsoft under KB2677246. You can download a supported hotfix from Microsoft under http://support.microsoft.com/kb/2677246/en.

Unfortunately the hotfix isn't available with a software update up to now.


Number of decimal digits

How can I adjust the number of decimal digits for the output of results?

All information about the presentation of results (e.g., number of decimal digits, font size, etc.) are summarized in styles. All styles are listed in the style flyout. To change the display of results

  • either you assign another, more compatible style by drag and drop
  • or you adjust the associated style of the object accordingly.

Export results

How can I convert flixo files and results in a pdf or in a different format in order to send them by e-mail?

There are two ways to use the results directly (for example, to insert in a Word document):

  • Using the clipboard (e.g. Edit.Copy and Edit.Paste)
  • Exporting the results as a graphic file (see File.Export)

Next, you can create from a flixo file a pdf file by installing a 'pdf file' printer and using it for printing (e.g. FreePdf).


Position of reference point (Psi value)

Where do I set the reference point in the PSI-value calculation?

The position of the reference point must correspond with the assumptions in the energy proof. The reference point defines the reference length of the individual components. Set the reference point where the U value of the component changes in the model of the energy proof.


Effects of thermal bridges

What effects have thermal bridges?

Thermal bridges have two effects:

  1. They increase the energy requirements
    The additional energy consumption is taken into account in calculating the total transmission energy loss with Psi-values.
  2. They lower the surface temperature
    Reduced surface temperatures can lead to mold or condensation. The assessment of mold or condensation hazard is based on fRsi-values.

Lambda value

What does the lambda value mean?

The lambda value (λ) is the thermal conductivity of a building material. Generally in the construction sector the lambda value is a temperature-independent material constant (units W/m∙K).

The higher the thermal conductivity, the greater the thermal transfer per unit time.

The lambda value is for example a characteristic size for insulating materials.

Equivalent U value

What is an equivalent U value?

The equivalent U value is a heat transfer coefficient, which already takes into account intermittent thermal bridges (e.g., wood-frame construction of wall).

U value

What does the U value mean?

The U value (overall heat transfer coefficient) describes how well a building element conducts heat. The U value indicates the amount of energy per unit time, which flows through a homogeneous or inhomogeneous body with an area of ​​1 square meter, if the subsequent air temperatures on both sides are different by 1 Kelvin. The unit is watts per square meter Kelvin (W / (m2 K)).

Basic rule: the lower the U value, the better the insulating property of the component and thus the lower the resulting heat loss.

Psi value

What does the Psi value mean?

A Psi value is mainly a value of adjustment during the calculation of energy loss of building surfaces. It quantifies the additional energy loss per degree Kelvin and linear meters which wasn't taken into account with the simplified approach of the energy loss calculation using U values and areas.

The calculation of the Psi value therefore depends strongly on the calculation method of the simplified approach. These are defined in international and national standards. Hence the same construction can have different Psi values depending on the national standard for the calculation of transmission losses!


DXF Import incomplete

During DXF import all outlines are abstracted and the structure is hardly recognizable. Why?

In most cases this is due to the scale of the drawing:

By default, in DXF files 1 unit corresponds to 1 millimeter.

If the DXF file to be imported has another scale and the option 'Transform all points to grid points' is enabled, all the details of the drawing disappear.

Before you import the DXF file adjust in the DXF Import options the conversion to the corresponding unit (e.g. 1 Unit corresponds: 1000 Millimeter).

Layer properties

Does the DXF import account for layer properties?

Yes, layers are adopted when importing DXF geometry. You can selectively show or hide layers. Only objects on the displayed layers are taken into account.

Length of parts

How long must components be in order to get reliable results?

The components (walls, roofs) that are adjacent to the thermal bridge must be at least 1 meter long, or if the thickness of the component is larger than 33 centimeter, the length must be at least 3 times the thickness of the component.

see EN ISO 10211:2007, section 5.2


Delete boundary conditions

How do I delete the boundary conditions?

To delete a single boundary condition:
Select the Select, Move, Scale tool and and mark the boundary condition. Either click on the start point of the boundary condition or draw a rectangle that contains the start point of the boundary condition. The start point is marked with a black square box.
Press the Delete key to delete the selected boundary condition.

To delete all boundary conditions:
You can mark all the boundary conditions with the menu command Edit.Select>Boundary Conditions.
Press the Delete key to delete the selected boundary conditions.

Frequently used materials

How do I compile a list of materials that I can use in each calculation?

Just add materials that you use very often, in the material list of your document template. Therefor open the document template (E.g. C:\ProgramData\infomind\flixo energy 7.0\Templates\Normal_EN.flt) and drag the materials from the material database upwards in the list of materials. Customize color and material properties according to your wishes. Save the template.

In the same way you can customize the list of boundary conditions.



Is there a printable version of the online documentation?

The printable version of the online documentation is available as a pdf file. You find the file flixo manual.pdf in the help subdirectory of the flixo program directory.

Or you can download it directly from hier .