Audytor HL

Building 3D modelling and heat load calculations.

Software designed for 3D computer modelling of buildings, as well as for computer aided calculations of heat load of individual rooms.

The program calculates (depending on the language version):

  • heat-transfer coefficients for walls, floors, roofs and flat roofs
  • heat losses for individual rooms
  • heat loss for the whole building
  • heat balance for the apartment building heating period
  • radiators selection



How it works...

Import of the building model from Revit 2016 - 2018

The function allows you to import a building model from Revit 2016 - 2019Revit has the ability to export a building model to the gbXML format. In order for the gbXML file to be properly adapted to the Audytor HL, you should use Audytor gbXML - the Revit plugin. Depending on the amount of data entered in Revit, the model may be almost full after the transfer. In the Audytor HL, only the data on the functions of rooms and the grouping of rooms can be supplemented. The imported building model can be verified using a three-dimensional preview.

  6.9 Pro 6.9 Basic
Import of the building model from Revit 2016 - 2018
Graphic creation of a building model
Heat transfer coefficient U for windows and door according to the standard PN-EN ISO 10077-1
Shading coefficient Fsh according to the standard PN-EN ISO 13790
Surfaces thermal bridges (linear and point) in multilayer partitions
Bonding and scaling drawings
The internal unit heat capacity of the building is calculated based on a building structure
Defining hygenic requirements for your own types of rooms
Creates a set of building materials in the building construction
Creates a set of building components in the building construction
Creates a raport with a set of materials (building materials, building components, carpentry, radiators, manufacturers)
Heat load PN-EN 12831
Selecting radiators
Cooperation with programs from the SET family
Computing variables
Heat transfer coefficient PN-EN ISO 6946
Heat transfer through the ground PN-EN ISO 13370
Inhomogeneous partitions
The system default data inheritance
Correctness check of the model
Three-dimensional preview of the imported building model
Moisture analysis of the building partitions – calculator of temperature distribution
Moisture analysis of the building partitions calculator of temperature distribution and vapor pressure
Moisture analysis of the building partitions - PN-EN ISO 13788
Heat load PN-B-03406 (an obsolete standard)

About the program

The calculation methodologies given in current standards and regulations are in many cases very complicated, often containing a lot of insignificant details, and are also full of errors. The many years of experience of our company and the software development team (the core of the company is made up of employees and graduates of the Institute of Heating and Ventilation at the Warsaw University of Technology) enabled the development of a program that on the one hand allows for thermal calculations in accordance with applicable regulations, on the other frees designers from the need for in-depth study often unclear regulations.


Our many years of experience have allowed us to eliminate many errors occurring in the regulations and to introduce additional extensions of calculation methods that increase the flexibility of the program.

The solutions used in the program (data inheritance system) make that despite complicated computational methods and a huge amount of information necessary to enter in order to perform calculations, the time necessary to prepare a project is not too long.


We have also equipped our program with an extensive error diagnosis system and interpretation of the results obtained.

All this combined with the intuitive and transparent data entry process means that the program is able to guide the designer through the calculations process.

To meet our clients' expectations and market needs, the Audytor HL program is constantly updated by us and adapted to current changes in regulations.

Bonding and scaling drawings

HL programs (from version 6.0), and CH (from 4.0) are equipped with the function of Graphic creation of a building model. This function gives you the opportunity to draw a building model. To simplify the action of drawing, you can load a drawing base into the program. The file being loaded can come from an external program for creating technical drawings (eg DWG), or from a scanned drawing (eg JPG). The scanned drawing can be divided into several files. Drawings scanned into several files usually do not keep the scale precisely enough. They can also be rotated relative to each other by a small number of degrees.

Drawing bonding allows you to quickly scale multiple scanned drawings (in different sizes and rotated) and bond them with one another.

Cooperation with programs from the SET family

After calculating the heat load, the results can be downloaded from CH family programs, eg Audytor CH. CH programs are used to graphically support the design of installations and to regulate existing central heating and chilled water installations. On the basis of the drawing of the installation and the devices selected by the user, the program selects radiators, pipe diameters, fittings and pre-settings of valves, pumps, gives total pressure loss in the installation etc.

Correctness check of the model

After 3D computer models of buildings have been created, designers can perform correctness check of entered building partitions.

Easy input of your design data into the computer

User's friendly 3D design editor assists designers in effective and fast data input.

Easy computer modelling of storeys of buildings

Thanks to the functionality of entering building base drawings, users can draw walls, windows, doors and floors with no requirement of precise manual dimensioning of all these components. Import of building base drawings is possible from DWG files, bitmaps or directly from scanning devices

Correctness check of the model

After 3D computer models of buildings have been created, designers can perform correctness check of entered building partitions.

Time saving

The concepts of data inheritance and default data will save users time and effort when entering individual building components.

Option for fast modification of parameters

Application of variables enables performing variant calculations.

Preliminary selection of radiators

Already at the stage of designing buildings, designers can assess the required dimensions of radiators in heating systems.

Assistance in preparation of technical documentation

Designers can prepare technical documentation for projects, basing on extensive overviews of materials, building partitions and selected radiators.

Technical requirements

The program runs under MS Windows (7, 8, 8.1, 10) 32bit and 64 bit.

The minimum hardware:

  • 1200 MHz processor, 
  • 1 GB RAM, 
  • A color monitor with a minimum screen resolution of 1024x768,
  • 200 MB free space on the hard drive,
  • Compatible graphics card with OpenGL 2.0 and higher: all new graphics cards on the market should meet the minimum hardware requirements;Graphics card integrated with the motherboard: minimum GMA 500;

Hardware requirements for the 3D editor

Vertical resolution requirements for the screen: 
- minimum - 768 points, 
- sufficient for comfortable work - 900 points, 
- the most convenient - 1080 points. 

Requirements for system font settings: 
- Windows Vista, 7, 8 - fonts "100% smaller", 
- Windows XP - "normal" fonts. 

The computer should have a graphics card that supports OpenGL technology in the version: 
- minimum 2.0, 
- sufficient for comfortable work: 3.3 and higher.

How can I check which graphics card model is on my computer? 
- Windows Vista, 7, 8: Control Panel/System/Device Manager/Graphics Cards, 
- Windows XP: Control Panel/System/Hardware/Device Manager/Graphics Cards.

Not recommended graphics cards that do not support OpenGL 2.0 (according to the manufacturer's data), on which the 3D editor will not work:


- ATI Rage 
- Original "ATI Radeon", jak i Radeon DDR, Radeon 7000, Radeon VE, LE, 
- Mobility Radeon 7500, 9000 
- Radeon 8500, 9000, 9200 and 9250. 

- Riva, Riva TNT 1 i 2, Vanta, 
- GeForce256, GeForce2, GeForce3, GeForce4, GeForce FX 
- Quadro 
- Quadro NVS (50, 100, 200, 210S, 280) 

- Intel740 
- Extreme Graphics (1-2) 
- GMA 900, 950 
- GMA 3100, GMA 3150 
- HD Graphics (Rok 2010) 
- HD Graphics (CPU Sandy Bridge) (Rok 2011) 
- HD Graphics 2000 
- HD Graphics 2500 
- HD Graphics 3000 
- HD Graphics P3000 
and most of the integrated ones

OpenGL 2.0 support cards (sufficient

- Mobility Radeon 9600, 9700 
- Radeon X300, X550, X600 
- Radeon X700–X850. 
- Radeon X1300–X1950 

- GeForce 6 (GeForce 6xxx) 
- GeForce 7 (GeForce 7xxx) 
- Quadro FX Series 
- Quadro FX (x300) Series 
- Quadro FX (x400) Series 
- Quadro FX (x500) Series 
- Quadro NVS 285 

- GMA 500 
- GMA 600 
- GMA 3000 
- GMA 3600 
- GMA 3650 
- GMA X3000 - X3500 
- GMA 4500 
- GMA X4500 
- GMA X4500HD 
- GMA 4500MHD

OpenGL 3.3 support cards (recommended)

- Radeon HD 2000 series. 
- Radeon HD 3450-3650, Radeon Mobility HD 2000 and 3000 series. 
- Radeon HD 3690-3870. 
- Radeon HD 4000 series. 
- FireStream 

- GeForce 8 (GeForce 8xxx) 
- GeForce 9 (GeForce 9xxx) 
- GeForce 100 Series 
- GeForce 200 Series 
- GeForce 300 Series 
- Quadro FX (x600) Series 
- Quadro FX (x700) Series 
- Quadro FX (x800) Series 
- Quadro NVS (290 - 300) 

- HD Graphics 4000 
- HD Graphics P4000 
- HD Graphics 4200 
- HD Graphics 4400 
- HD Graphics 4600 
- HD Graphics 5000 
- Iris Graphics 5100 
- Iris Pro Graphics 5200 

OpenGl 4.2 
- FirePro Workstation 
- FirePro Server 

OpenGl 4.3 and higher
- Radeon HD 5000 series 
- Radeon HD 6000 series 
- Radeon HD 7000 series 
- Radeon HD 8000 series 
- Radeon HD 9000 series 

- GeForce 400 Series 
- GeForce 500 Series 
- GeForce 600 Series 
- GeForce 700 Series 
- Quadro x000 
- Quadro Kxxx Series 
- Quadro NVS (310 - 510)


Wikipedia source:

Cards with AMD Chipsets

Cards with Intel Chipsets

Cards with nVidia Chipsets