Software for heat transfer and ground heat

EED - Earth Energy Designer

·  Support also available in German

Click here for current version update info

Demo version:
Click here to download the demo version

Click here for some EED screen shots


· EED Manual v4 (PDF)


· Documentation and frequently asked questions (FAQ:s)



The main new features of EED 4:


· EED now calculates the response due to any hourly load variation. This means that it handles any  loads for cooling, heating, and DHW (Domestic Hot Water), with a resolution of one hour.  
It is quite easy to open an old v3 project and assign any hourly data for any load to investigate the effect of base or peak loads.  

· EED v4 is more than 50 times faster than EED v3. An optimization that took a few minutes on EED v3 only takes a few seconds using EED v4 for montthly load values.

· EED v4 will also find more solutions (especially for cases with cooling loads) compared to v3 for the optimization

· A lot of smaller improvements.


”EED on the web”


Apart from the standard desktop version, EED v4 is also available as an add-on ("EED on the web") which runs on a dedicated server from any operating system and/or device with an HTML5-compliant web browser, such as IE10/11, Chrome, Safari, Firefox, Opera, etc. It supports PC, Mac, iPad, iPhone, Chromebook, Android and many other popular devices.

There are many advantages running EED on a dedicated server:


· Extreme calculation performance. We use very powerful cpu:s allowing quick simulations and optimizations for both monthly and hourly values for loads.

· You dont have to install/update EED. It has always the latest version.

· Access it from anywhere via a web browser on your PC, Mac, IPad, IPhone, smartphones, tablets, TV:s, etc.

· Share your project files on the server with colleagues. There can even be simultaneous concurrent users accessing the server.

For more info, see manual for "
EED on the web"





· Geotrainet uses EED in their courses ”Training for designers” on several locations in Europe. Please see their course calender.

· Holymoor Consultancy Ltd (UK) offers courses and training in EED. Please see their course calendar for "open" courses, or contact Holymoor Consultancy directly for bespoke internal training.

· Courses (usually in Swedish) given by and

· (German/English). Course given by Bremen university.

Help needed for translation into other languages

We offer a free license of EED 3 if you make a valid translation into a new language.
If you wish to contribute, please contact us first in case of that no other is currently working on it. See link
supported languages

Older versions

Version 3

· EED Manual (PDF), revised Feb 19, 2015


Version 2
This version was written for Windows 98/XP and is not supported anymore.

· Manual (PDF), 360 kB, 43 pages, revised October 30, 2000

Overview       New version 4 released

EED is a PC-program for vertical borehole heat exchanger design. Its easy of use, short learning curve, quick calculation times and inherent databases make EED a useful tool in everyday engineering work for design of ground source heat pump system (GSHP) and borehole thermal storage. In very large and complex tasks EED allows for retrieving the approximate required borehole size and layout before initiating more detailed analyses. Even for very small plants it is worthwhile using EED instead of rules of thumb. EED handles configurations from one borehole to large systems with up to 1200 boreholes. Annual base loads may vary between a few MWh up to several TWh!

In ground source heat pump system, heat is extracted from the fluid in the ground connection by a geothermal heat pump and distributed to the building. The fluid is then re-warmed as it flows through the ground. In cooling mode, the process is reversed. This is a renewable, environmentally
friendly energy source. This sustainable technique can be used for cooling and heating of houses, cooling of telecommunication switchboards, etc.

EED is based on parameter studies with a numerical simulation model (SBM) resulting in analytical solutions of the heat flow with several combinations for the borehole pattern and geometry (g-functions). Those g-functions depend on the spacing between the boreholes at the ground surface and the borehole depth. In case of graded boreholes there is also a dependency on the tilt angle. The g-function values obtained from the numerical simulations have been stored in a data file, which is accessed for rapid retrieval of data by EED.

Calculation of brine temperatures is done for monthly heat/cool loads. Databases provide the key ground parameters (thermal conductivity and specific heat) as well as properties of pipe materials and heat carrier fluids. The monthly average heating and cooling loads are the input data. different methods of establishing a monthly load profile. A printed output report and output graphical processing are provided. 

The program has an easy-to-use interface. The borehole thermal resistance is calculated in the program, using the borehole geometry, grouting material, pipe material and geometry. The borehole pattern may be chosen at will from a database of 800 basic configurations.


· Dr. Thomas Blomberg, Blocon

· Prof. Johan Claesson, Dept. of Building Physics,  Chalmers University, Sweden

· Dr. Per Eskilson, Dept. of Mathematical Physics,  Lund University, Sweden

· Prof. Göran Hellström, Dept. of Mathematical Physics,  Lund University, Sweden

· Dr. Burkhard Sanner, Germany


- now supporting 34 languages                                      - available as
web services