The initials HVAC stand for Heating, Ventilation and Air Conditioning that describe functions of a HVAC system. The system's design targets to help take control of the environmental condition inside a space such as a home or an office. The system controls the environment of the room through heating and cooling. It also helps to control the humidity levels by controlling the distribution of the air. It is important to appreciate that HVAC systems use the same working principle. However, some are designed to serve smaller environments while others can cater to the entire house. The three main types of HVAC include; Split and window AC. In this type of HVAC, the fans blow the air via coils that helps to push the cold air into the room as the hot air gets lost to the outer space. The primary focus is splitting the cold air from the hot side of the furnace. The colder section consists of cold coils and an expansion valve. The valve is placed in a furnace that blows air over the coils and distributes the cooled air into the rooms via vents. Packaged HVAC. These units have the advantage of providing the cooling and heating system in the same package. The centrifugal fan and blower are positioned in the same unit. They can be easily positioned into the conditioning space. The central ACsystem. Most air conditioning systems in buildings are the split systems that feature separate cooling fans, condenser coils, and compressors positioned in separate units. Evaporator coils are installed on the furnace, while the compressor uses electricity to pump a refrigerant through the system to collect and remove heat from the house. The heat dissipates from the house via coils in the condensing unit. To know the right HVAC system to install in your space, it is important to factor the room to heat/cool and the nature of the environment. You should also consider working with an expert when selecting a HVAC and installing it in the house.