If you are using Air devices in your home, you may have heard a lot of HVAC System. So what is an HVAC system? First, it stands for Heating, Ventilation and Air Conditioning. This is a technology describing the functions of an HVAC system. This mechanical system’s design is primarily an attempt to take control of the environmental conditions inside the space you work.
Together with Profirefox, we will better know another device in your home.
Main functions of an HVAC system
HVAC is an important part of residential structures such as single family homes, apartment buildings, and hotels. An HVAC system is designed to control the environment in which it works.
It achieves this by ventilating and exchanging the inside air, therefor controlling or heating the temperature of a room. It also controls the humidity level in that environment by ventilating the air flow.
The system also helps clean the air inside home environment.
Types of HVAC Systems
There are three main types of HVAC systems available today:
- Split and Window AC
- Packaged Heating & Air Conditioning System
- Central AC System
How Does the System Work?
Not all types of HVAC systems work the same way. Some are faster than others while others serve larger environments. In short, some HVAC systems are very flexible for different situations.
Here’s how the different systems work :
Split and Window AC Systems
In a window AC, fans blow air through the coils. This improves how they separate the heat and cold. Heat gets out to the outside air while serving cold is into the room.
Split ACs are used in large application areas, while Window ACs are for the smaller. The split AC focuses on splitting the cold from the hot side of the system. The cold side has the cold coil and the expansion valve. This is usually placed inside a furnace or any other form of air handler. The handler blows air over the coil and the cooled air is distributed to various rooms in the building through the air ducts.
Packaged Heating AC System
These units provide an all-in-one benefit in that they have both heating and cooling equipment in a single “package”. Users can place them in mechanical rooms, on the rooftop or at a grade close to the conditioning space.
Unlike the split HVAC above where the cold and hot units are separate, the package AC has all the components in one unit. These elements have a centrifugal fan or blower that helps distribute the air throughout the elements of the structure.
Central AC Systems
Most of the air conditioners in an apartment or public places are in the form of split systems, but bigger. They have a cooling fan, a condenser coil and a compressor housed in a separate condensing unit. The evaporator coil is usually inside an air handler (indoor) unit normally installed on the furnace. When the furnace is electric, a blower is included in the system.
The compressor uses electricity as its source of power to pump the refrigerant across the system collecting indoor heat and removing it from the home. The heat dissipates outdoors by the coil in the condensing unit.
Warm air indoors gets blown through the indoor coil (cold) to remove moisture and heat. The heat in the air transfers to the coil and thus the air cools. The water vapor condenses on the coil (since it is cold) and collects inside a drain pan. It goes outside through the condensate drain.
The heat, after flowing to the evaporator coil, pumps outdoors while the now cooled air inside the room circulates through the fan on the air handler. Hence, the indoor temperature is maintained.
We hope now you understand clearly what is an HVAC, right? Thank you.