Research Article Open Access

Control Techniques in Heating, Ventilating and Air Conditioning (HVAC) Systems

H. Mirinejad, S. H. Sadati, M. Ghasemian and H. Torab


Problem statement: Heating, Ventilating and Air Conditioning (HVAC) systems are among the main installations in residential, commercial and industrial buildings. The purpose of the HVAC systems is normally to provide a comfortable environment in terms of temperature, humidity and other environmental parameters for the occupants as well as to save energy. Achieving these objectives requires a suitable control system design. Approach: In this overview, thermal comfort level and ISO comfort field is introduced, followed by a review and comparison of the main existing control techniques used in HVAC systems to date. Results: The present overview shows that intelligent controllers which are based on the human sensation of thermal comfort have a better performance in providing thermal comfort as well as energy saving than the traditional controllers and those based on a model of the HVAC system. Conclusion: Such an overview provides an insight into current control methods in HVAC systems and can help scholars and HVAC learners to have the comprehensive information about a variety of control techniques in the field of HVAC and therefore to better design a proper controller for their work.

Journal of Computer Science
Volume 4 No. 9, 2008, 777-783


Submitted On: 28 October 2008 Published On: 30 September 2008

How to Cite: Mirinejad, H., Sadati, S. H., Ghasemian, M. & Torab, H. (2008). Control Techniques in Heating, Ventilating and Air Conditioning (HVAC) Systems. Journal of Computer Science, 4(9), 777-783.

  • 66 Citations



  • HVAC
  • thermal comfort
  • fuzzy control
  • neural network