It is typically a metallic box that contains a blower, cooling and heating elements, filter racks which are also referred to as chambers, dampers and sound attenuators. The task of the air handler is to circulate the air, heated or cooled, through the ductwork. When it is not a centralized heating or cooling system, an air handler can directly circulate air to and fro a given area. An air handler is made of various components. They are…
A blower is typically a fan that is housed in a box resembling a cage. The vents in the box allow the air to be circulated by the blower. A blower can operate at multiple speeds and this speed can be regulated to get a desired quality of airflow or a certain speed of airflow.
Heating or cooling elements are normally refrigerants that are tasked with either heating the air or to cool the air. The eventual objective is to condition the air to attain the desired temperature.
Any air handler or the HVAC system as a whole would have multiple filters. These filters are tasked with cleansing the air of any dust, pollen, allergen or microbes.
In an enclosed room where temperature is regulated by an HVAC system, there would be an artificial humidity level created owing to the conditioning of the air. A humidifier is a device that regulates the humidity, the level of moisture within the heated or cooled space.
The mixing chamber is where heated air, cooled air, natural air, indoor air and outdoor air are blended to form a natural ambience within the designated indoor areas. The mixing chamber is used along with dampers to maintain a ratio of the extracted, pumped in and exhausted air.
An air handler or the HVAC system as a whole would have several controls that allow the regulation of air flow rate, specific temperatures, humidity level and other factors.
The air handler creates a very noticeable vibration owing to the movement of the fan. Vibration isolators nullify this vibration.
State of the art air handlers are much quieter than older models and they come in much smaller sizes today. An air handler can be placed in the attic, in a closet or ideally in the garage of the house.