HVAC System – System Types

HVAC is the acronym that means heating, ventilation and air conditioning, the main technology for indoor (residential and offices) and vehicular environmental comfort. The aim is to provide thermal comfort and correct air quality within these places.

Covering more grounds, the system is also responsible in providing fresh outdoor air to combat the airborne contaminants in the system which is closed. The contaminants include the odors of the occupants of the enclosed space, the volatile organic compounds (VOCs).

The VOCs are produced by the things inside the room: interior furnishings, chemicals, and many other unnecessary contents.

When these are properly supervised and maintained, the system provides the ideal comfortable indoor environment. Not all types of HVAC system North Las Vegas work the same way. Some are faster than the others. Still others serve larger environments.

With the differences, some HVAC system North Las Vegas are also more effective (and efficient) than the others.

Air conditioner

This familiar equipment works by cooling and dehumidifying the air as it passes a cold coil surface. this is the indoor coil that is called air-to-liquid heat exchanger. The liquid is passed through the coil in rows of tubes.

Direct expansion equipment (or DX) uses a refrigerant as the liquid medium. Chilled water (or CW) can also be used here. If the required temperature of a chilled water system is near the freezing point of water, a freeze protection (glycols or salts) is added. These liquids deliver the cooling coil at a cold temperature.

Split system

Actually, this one is a combination of an indoor air handling unit and an outdoor condensing unit.  The indoor unit has a supply of air fan and an air-to-refrigerant heat exchanger (or cooling coli) and an expansion device.

The outdoor units are composed of a compressor and a condenser coil. These are usually found in homes or small commercial buildings. This one has the highest energy efficiency rating among all the available AC systems.

Packaged system

This one combines all the components in the split type system in one single unit. Since this is a package, it is placed outside the building and the indoor air is “ducted” from the building to the packaged system and back.

This one has a seasonal efficiency SEER rating from 10 to 18. The heating is needed, alternate methods of heating the interior of the building is used. Usually, these are in the form of electric power or gas heating. 

This unit has a seasonal efficiency rating (SEER) from 10 to 18. If heating is needed, alternate methods of heating the interior of the building are used. These are usually in the form of electric or gas heating.

Heat pump

Heat pumps are like the cooling only systems with one exception: a special valve in the refrigeration piping lets the refrigeration cycle to be operated in reverse. A cooling only system ejects heat to the outside while it cools the indoor air.

A heat pump can also cool the indoor air, although when the valve is reversed, the indoor air gets heated. Overall, it is important in HVAC system to check on the efficiency and energy use before buying.