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HVAC System


The traditional HVAC system is a furnace that splits air into two different components. These components generate, distribute, and circulate hot or cold air throughout a home.   

The HVAV system is s composed of 8 parts: 


  1. Thermostat – The brains of the operation. It is a device, located on the wall, inside an establishment, which monitors the indoor temperature and automatically adjusts the heating or cooling components of the HVAC system to maintain the desired level of optimal comfort. 

  2. The Heat Exchanger – A heat exchanger is a furnace that transfers thermal energy from one medium to another. It is the component that heats up the air. It is a set of metal tubes or coils that connects to the burner assembly and ends at the flue pipe. Air and gas separate within the heat exchanger to prevent mixing and exposure of airborne toxins such as carbon monoxide. 

  3. The Blower Motor and Furnace - The blower motor receives the heated or cooled air generated in the furnace and circulates it through the duct system which spreads out through the home. It does this to ensure that it reaches the temperature required by the thermostat by rotating a fan that blows air through the ventilation system.  

  4. The Evaporator Coil – The air circulates through the home. The condenser sucks the warm air, and the evaporator coil does the cooling work. The coil has copper tubes inside the unit, and these tubes are responsible for cooling the air. As the air circulates, and the hot air comes in contact with the coil, it cools it and releases is back into the home. 

  5. The Condenser fan - The condenser fan is a vital component which circulates the air across the coil to facilitate heat to transfer.  

  6. The Condenser unit - The condenser cabinet contains the condenser coil, a compressor, a condenser fan, and various controls. The condenser coil can be made of copper tubing with aluminum fins or all-aluminum tubing so heat can be rapidly transferred. These are known as refrigerant lines. 

  7. Refrigerant Lines - The refrigerant lines can be made of copper, aluminum fins or aluminum tubing and run between the indoor evaporator coil and outdoor condensing unit. 

  8. Ductwork - Every HVAC system has air ducts or ductworks. These are small passages laid out and spread into every room in order to circulate heat or cool air throughout the home. To achieve an efficient HVAC system, the type of ductwork should be adequately measured and sized for each system.  

  9. Return and Supply Registers - These are the covers that fit over the ductwork openings. They are known as return vents and grills. They tend to be rectangular in shape and located at the end of each duct work. These openings are usually located in the ceiling, wall, or floor, depending on the ductwork layout. 

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