Energy simulation modeling for buildings is a method to predict the energy efficiency and comfort of a building in advance, thus avoiding mistakes and risks that can be corrected after the building is in operation. Critical design decisions will be carefully evaluated to achieve benefits such as minimal energy consumption and investment costs,  and living comforts are well controlled and guaranteed.



EDEEC can support your project from the design task planning to the acceptance stage as part of the integrated design process, and provide detailed & timely technical feedback to keep track of the project and achieve the original goal. EDEEC’s strength is to deeply optimize the design of the building’s engineering system (MEP, HVAC, facade…) including the determination of the optimal capacity of the air conditioning system based on the whole year load diagrams. At the same time, we timely control the thermal comfort of each space, seek out technical solutions to increase the efficiency of the system, analyze and evaluate the effectiveness of each solution, and cumulatively analyze and identify the most profitable distribution solutions. As we move towards the commissioning stage, we adjust the schedule, formulate an operation strategy, and provide advice on choosing the best equipment… EDEEC is an expert in this field, having performed energy simulations for nearly 70 buildings so far. Our many years of experience guarantee accurate simulation results, as well as advising on energy-efficient solutions for engineering systems (MEP, HVAC, facade.. ) for the best performance.

Our services include


EDEEC uses the modern calculation methods as well as advanced building energy simulation tools for engineers to digitize building designs and provide detailed analysis to support design including:

  • Determine the energy consumed and the contribution from the consuming components to the total energy consumed
  • Compare with the base model to show building savings
  • Determine the optimal capacity of the air conditioning system based on the whole year load diagram
  • Determine the peak of the air-conditioner load
  • Analyze energy-saving measures and how they affect the end-use energy-saving results
  • Evaluate passive design strategies including shading, building form, thermal mass, and natural ventilation…
  • Determine the thermal comfort for each space and the extent of the impact of overheating
  • Suggest whole building ventilation strategies include natural, mechanical, and combined ventilation solutions
  • Perform natural lighting, solar radiation, and luminance analysis
  • Undertake a detailed simulation to find out operational correction solutions, including solution sensitivity analysis and cumulative analysis, and change summary for the best results
  • Apply in practice and test run, work with BMS suppliers and operations management to calibrate, calculate optimal payback time, and monitor the achieved effect for deeper weighing.


HVAC systems contribute up to 40-50% of energy consumption in buildings, as well as significant initial investment costs. Performing optimization simulations and in-depth analysis of the HVAC system, as well as its coordination with the building envelope, is an extremely vital step to ensure that the HVAC system is designed with the right technology in mind. By determining the optimal capacity based on the load diagram for 8760 hours in a year, we ensure that the system will operate at the highest efficiency, the most stable while in operation, and at the lowest cost. Usually, this is an inevitable step that helps bring significant economic efficiency to the entire project from the investment stage to the operation stage. EDEEC can provide you with detailed reports with 3D diagrams on the energy efficiency and investment of air conditioning systems, advising on the opportunities and possible risks involved to achieve the desired results.

While this is an imperative step in optimizing building energy simulations, it requires in-depth technical knowledge to ensure that steps, such as:

  • Simulate accurately the operation of each component of the entire system using the performance curve and operating schedule indicators.
  • Evaluation of possible bias in the design of the MEP. system
  • Simulation is used to refine the capacity of the air conditioning system based on a whole year load diagram. This includes the chiller room, pump system, cooling tower, and details about the size of the CFU units in each room and space.
  • Seek out detailed operational calibration solutions to ensure the most efficient system
  • Perform detailed reports on the design and operation of the HVAC system, energy savings opportunities and dynamics impacting the result, sensitivity analyses, cumulative analysis, and payback time for proposed energy-saving solutions.


EDEEC uses the most modern building energy simulation technology to search deeply for optimization, especially in the areas of energy efficiency and environmental quality, and building amenities. These are two key items that require in-depth technical knowledge but thereby help reduce and optimize the total initial investment costs thanks to:

  • Using detailed simulation data, such as the whole-year load diagram, to ensure the optimum lowest capacity of the air conditioning system while ensuring the maximum thermal comfort for all spaces.
  • Related technical systems such as pumping systems, electricity, and pipeline systems are also optimized in terms of size and installed capacity.
  • EDEEC will perform simulations to find out deep optimization, especially in terms of reasonable power distribution, review the operational factors in detail, understand how the HVAC system works in coordination with other systems, and provide detailed design data for MEP consultants to implement. This will help to allocate investment capital into the most expensive design components such as air conditioning, electromechanical systems, and the skin of the project… Thanks to that, the project achieved the lowest total investment while still ensuring outstanding quality and comfort.
  • EDEEC helps to provide the building operation requirements for the BMS supplier to perform the programming.
  • Based on detailed data of energy simulation technology and equipment suppliers, it helps investors choose the most efficient option, with an analysis of the optimal payback period.

EDEEC can provide analysis in the form of charts comparing design options with initial investment costs, energy efficiency, and thermal comfort to recommend the optimal solution.


Proper natural light and glare control for each space not only results in significant energy savings by reducing the energy consumption of the lighting system but also offers quality health and comfort and improved work efficiency for the working space.

EDEEC uses state-of-the-art building energy simulation technology to perform optimal design consulting analyses that take advantage of natural light. This includes modeling natural lighting based on climate conditions for each space and performing simulations that give natural light intensity results for each space plan with high-quality photos and tables summarizing natural lighting efficiency data to illustrate performance comparisons between design alternatives, from the conceptual design stage.

The luminance analysis for each area shall be conducted to compare luminance for each point for different design options.


Resource-efficient building design is not only concerned with energy efficiency but is also a very significant factor in occupants’ health and comfort, especially thermal comfort. In the absence of thermal comfort, conventional energy efficiency solutions will not be sustainable in the long term and will revert to “conventional” solutions that focus on safety, such as installing equipment that exceeds its capacity and wasting energy.

EDEEC’s energy-efficient design process is always accompanied by tight control of thermal comfort for each space with specialized software that provides statistics for the ambient temperature, radiant temperature, operative temperature, and air humidity in graphs and tables for 8760 hours of the year.


We have many years of experience advising clients on building envelope solutions, including choosing the glass cover option, designing the wall shell structure, and insulating the roof optimally. The envelope design should be considered in order to maximize the efficiency of the HVAC system and to provide ultimate comfort in terms of temperature, light, and noise. The projects consulted by EDEEC will be thoroughly analyzed for the cladding options along with the HVAC system design options to achieve simultaneous goals such as the lowest energy consumption, the lowest initial investment cost, the best thermal and lighting comforts, and the most efficient maintenance plan.


EDEEC supports design units and investors to calculate heat radiation and wind pressure on the surface of the building. This will optimize the design of the envelope, shape, and shade for the building.

Immediately contact EDEEC experts to support your project

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