HVAC stands for Heating, Ventilation and Air Conditioning. Anyone interested in the history of air cooling systems cannot avoid mentioning Mr. Willis Carrier who was an American Engineer and inventor who used refrigeration to cool water vapour in humid air. This vapour condenses into droplets which leaves the air dry and cool. The following gives us some insight into why airconditioning systems came about. It also lets us know more about Mr. Carrier.


HVAC embraces not only airconditioning but also heating systems and ventilation. It was seem obvious that major companies supplying goods and services to individuals and industry would would want to provide solutions all year round whether it is hot or cold. The HVAC industry is now an industry in it's own right with it's own standards, designs and normal practice. HVAC Engineers will familiarize themselves not only with standards but will also involve themselves with heater or chiller calculations to optimize efficiency and save costs. They will also be familiar with mechanical equipment such as pumps, compressors, condensers,  blowers and electrical energy consumption as well as control and monitoring systems using local and remote instrumentation and panels.

The following media presentation gives an idea to those unfamiliar with this industry and the fact that manufacturers are continually developing chiller systems that will work together with energy efficiency ideas. The combination of variable speed drives and control systems along with sensors and instrumentation allow monitoring of  multiple parameters which help technicians to not only diagnose conditions but also to remedy them. Storing data pertaining to the history of heat exchangers and  performance can also help predict future conditions as well as assist in preventative maintenance schedules.


Heat Exchangers can be made in all shapes and sizes using different materials and material selection can play an important part in the design because it may determine how long and how well the heat exchanger works in the particular environment. Manufacturers of chillers and heating systems can offer standard products and systems but also have the ability to design and produce systems that best suit the location and application. Sizing of heating and cooling systems also plays an important role. The systems will need to be designed to work well under normal conditions and also under peak load. 

Airconditioning systems have to be designed in all types of sizes. There is the large  industrial system but products that can be mass produced. The following media presentation gives us an idea of what is involved in the production of these types of airconditioners.


Smart ideas for heating, cooling and ventilation systems are being introduced every year. Since energy conservation and resource management is a hot topic it is no surprise that the HVAC business has a role to play in it all by using smart HVAC design, development, production and maintenance.