What does hvac control?

The definition of HVAC control systems can vary depending on whether it is applied to a very basic residential application or potentially to an extremely complex large-scale application, but in short, HVAC controls consist of devices that control heating, ventilation and air operations conditioning. An HVAC control system is a computerized mechanism used to adjust heating, air conditioning, and ventilation components within a building. It can feature manual or automatic operation, and is often customized to the specific demands of each building. The HVAC control system can be used to turn on or off an oven or air conditioner, or to adjust the temperature and other settings on these units.

Depending on the application, these controls can also be used to adjust other types of building systems. In addition to allowing homeowners to easily control systems within a building, an HVAC control system is also used to maximize performance and energy efficiency.


, Ventilation and Air Conditioning (HVAC) controls cover a wide range of products, functions and power sources. We define control as starting and stopping or regulating heating, ventilation and air conditioning.

Our concern here is the devices and control systems for controlling larger commercial and industrial HVAC systems, not residential heating and cooling, except in some cases where residential controls become lightweight commercial controls. In essence, controls are the devices of an electronic HVAC system that govern various pieces of equipment. This happens thanks to data communication between devices, hardware and computer systems. HVAC controllers are used to monitor and control the performance of heating, ventilation and air conditioning (HVAC) systems in buildings.

Monitor indoor environmental factors, such as humidity and temperature, and control heating and cooling to achieve and maintain desired levels. Some HVAC controllers can also receive inputs or send outputs in serial, parallel, Ethernet, or industrial fieldbus format. The biggest concern customers have when looking for a new HVAC system in the market is price and reliability. More complex HVAC systems can interact with the Building Automation System (BAS) to allow building owners to have more control over heating or cooling units.

Third-party system integrators can also be used to install and configure software provided by the HVAC control system vendor. Standalone HVAC controllers are desktop or floor-standing units with a complete housing or cabinet and an integral interface. A customer should perform these three steps every two months or when there is a suspected problem with the HVAC system. Servicing an HVAC system includes changing the air filter, inspecting the areas where the air intake is made, and checking for leaks.

Before World War II, the main suppliers of HVAC controls in commercial buildings were companies that promoted pneumatic controls. Examples of standalone unit packages include rooftop HVAC systems, room air conditioning units, and air-to-air heat pumps. Buildings equipped with an HVAC control system offer many advantages over those that are not equipped with these systems. Considerations for which energy management application programs should be used depend on the type of building and the HVAC system.

When computer-based supervisory control systems came to market, some larger companies with computer-based products entered the HVAC controls market; but ultimately they gave up. .