Controls for heating ventilating and air conditioning or HVAC cover a wide range of products, functions, as well as sources of supply.
The application of HVAC controls starts with an understanding of the building and the use of the spaces to be conditioned and controlled.
Different types of control products such as pneumatic, electric, and analog electronic, or electronic direct digital control may help in doing the basic control sequence.
The development and usage of computers and microprocessors have caused great changes in the overall HVAC controls industry.
Minicomputers were specially installed on jobs for collecting data to provide centralized control.
All of the factors while meeting the thermal comfort demands provided by HVAC leading to its high demand, in buildings are the most important goals of control designers.
