AS9120B, ISO 9001:2015, AND FAA AC 0056B ACCREDITED

What Does an Air Handler Do?

Despite being a critical part of any heating, ventilation, and air conditioning system, the air handler that serves as a common assembly element is not always well understood by those who utilize them. This component plays a significant role in ensuring a comfortable indoor environment regardless of external weather conditions, so read on as we explain their essential functions and components.

An air handler, sometimes referred to as an Air Handling Unit (AHU), is used within an HVAC system to circulate and condition the air within a building. There are several important components that facilitate this process, including an evaporator coil, blowers, various ventilation parts, and air filters. Central to the air handler’s function is the evaporator coil. When air is drawn into the air handler, it passes over the evaporator coil, which is filled with refrigerant that absorbs heat from the air and cools it down. In systems with heat pumps, this process can be reversed, allowing the air handler to also distribute warm air during colder months. Meanwhile, in a system with a furnace, the air handler may work in tandem with the furnace’s blower to distribute heated air during the winter months.

Furthermore, the blowers within an air handler are responsible for moving air through the HVAC system. These fans draw air in from the building, pass it through the evaporator coil for cooling or heating, and then distribute the conditioned air back into the space. The efficiency and power of these blowers are vital qualities, as they determine how well the air handler can maintain the desired indoor temperature and air quality.

Ventilation parts within the air handler also play a significant role in regulating the flow of air, coming in the form of components like dampers and ductwork that guide the conditioned air to different parts of the building. As a result, properly designed and maintained ventilation systems are essential for ensuring even distribution of air and preventing issues such as hot or cold spots.

Air filters are another crucial part of the air handler, trapping trap dust, pollen, and other airborne particles to prevent them from circulating throughout the building. This not only improves indoor air quality, but also helps protect the HVAC system from damage that could be caused by debris buildup. Therefore, regularly replacing or cleaning these filters is essential for maintaining the efficiency of the air handler and ensuring a healthy indoor environment.

A terminal unit is often found in larger HVAC systems and serves a similar function to an air handler, but on a smaller scale. These units are typically located in specific zones or rooms and provide localized control over the temperature and air quality. Terminal units work in conjunction with the main air handler to offer a more customizable and efficient approach to heating and cooling large or complex buildings.

Beyond maintaining the desired air temperature with ease, an air handler operating at peak performance can reduce energy consumption and lower utility bills. To fully reap the benefits of an air handler, one must perform regular inspections and servicing to ensure that all components within it are functioning correctly. This includes checking the condition of the evaporator coil, ensuring that the blowers are operating smoothly, and replacing air filters as needed. Moreover, by performing regular maintenance, one can extend the lifespan of the air handler and prevent costly repairs or replacement down the line.

In summary, the air handler is a vital component of any HVAC system, responsible for circulating and conditioning the air to maintain a comfortable indoor environment. Whether part of an air conditioner system, a heat pump setup, or a combination of both, the air handler is indispensable in modern climate control technology. Here on Automatize Industrials, all your HVAC component needs and more are covered with our selection of over 2 billion new, used, obsolete, and hard-to-find products. We invite you to explore our inventory with either our curated catalogs or search engine, and when you come across any items of interest, you can utilize our online RFQ forms to rapidly request competitive quotes for your comparisons. You can have full faith in the quality of our parts knowing that we only source from suppliers and manufacturers that we trust and have thoroughly vetted as necessary, and we also abide by a strict NO CHINA SOURCING pledge to ensure authenticity. This being said, see why so many customers steadily depend on us as their procurement partner when you connect with our team.


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