HVAC is an acronym for heating, ventilation, and air conditioning. This system integrates design, installation, and control systems to provide comfortable temperature control and high levels of energy efficiency. HVAC systems are designed by contractors who determine the capacity and types of equipment required for small buildings. They also choose various components and refrigerants. Specialty mechanical contractors and suppliers install the HVAC systems. Generally, building permits and code compliance inspections are required for the installation of HVAC systems.
A central HVAC system uses a network of registers and ducts to send heated or cooled air into a building. HVAC systems can be set to use a combination of natural sources and renewable energy sources. They can even be designed to operate using solar heat or seawater to cool a building. Companies throughout the world are constantly developing and introducing new ways to make HVAC systems more efficient.
One way to keep HVAC systems running efficiently is by ensuring that the pollutants that cause mold and mildew are controlled. Specially designed HVAC systems will use filters that remove vapor-phase organic contaminants and other airborne pollutants from ventilation air. These filters are not usually used in buildings with normal occupancy, however, and require regular maintenance. Specially designed HVAC systems may also use activated carbon and permanganate oxidizers. These gaseous filters must be regularly maintained in order to ensure that they remain effective.
Split HVAC systems are another popular type of HVAC. They contain an indoor unit and an outdoor unit. The indoor unit has a heating unit and evaporator coils, while the outdoor unit uses compressors and coils to cool the air outside. The indoor unit is connected to the outdoor unit via ductwork or vents.