HVAC systems are an essential part of any building. They provide the right amount of heat, air conditioning, and humidity to keep people comfortable. HVAC systems are also important for the environment as they help reduce energy consumption. These systems are usually installed in the ceiling, walls, or floor of a building. They can be either ducted or unducted. Ducted systems use ducts to distribute the conditioned air throughout the building, and non-ducted systems use fans to circulate the air. The components of an HVAC system include: Air Handling Unit Furnace or Boiler Air Conditioning Unit Humidifier or Dehumidifier Air Filter The different systems for HVAC can be split into two categories: heating and cooling. Split systems are the most popular type of HVAC system. They work by sending cool air from the air conditioning unit to the supply registers in your home. The hot air is then sent up to the ceiling or through a floor or wall register and out into the attic or crawl ...