HVAC controls are the heart of an HVAC system. They automate the functions of an HVAC system to maintain occupant comfort and maximize energy efficiency. They function by interpreting data from sensors and other HVAC components, and then modifying the settings to achieve the desired results. These systems can be analog, digital, or smart.

HVAC systems regulate indoor temperatures and humidity and are essential to residential and commercial structures. They also play a crucial role in vehicles, hospitals, and marine environments. HVAC systems remove contaminants from the air through the use of filters and ventilation systems. A quality HVAC system can also lower the dew point of indoor air, which can make a home feel cooler without running the cooling system.

HVAC professionals should be licensed and certified in order to work on HVAC equipment. Licensed contractors can handle a wide range of tasks, from filter changes to parts replacements and full installations. HVAC systems require specialized skills including carpentry, metalwork, and specialized equipment. They should be licensed to work in the state or province where they operate.

Modern HVAC systems move air through a duct system, a network of air ducts. A duct system is used to route air from an outdoor unit to indoor units. It is important to clean ducts regularly to prevent problems, as dirt and debris can build up and cause an HVAC to malfunction. Duct cleaning can help avoid any costly repairs.

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