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With the long list of first co air handler s for every home and office, it can seem confusing for the average person to choose the right unit. From standard window and cassette types to split inverter aircon units, the slate of available choices — and possibilities — that you can purchase to cool your space seem endless.

But apart from these common aircon types that we are all familiar with comes another popular choice that may seem elusive yet commonplace — the aircon fan coil unit (FCU). This is a standalone aircon system that is responsible for circulating the present air in a small space, but is also sometimes a part of a complete HVAC system. The FCU is also used in a variety of configurations, the usual ones being arranged and used in floor-mounted and ceiling configuration types.

How Does The first co air handler Work?

The FCU functions as a fan that collects and circulates air in a space and then into the unit by blowing it over with a cooling or heating coil. This process results in air coming out of the unit that can be cooler or hotter than ever before.

Don’t be fooled by this seemingly complex procedure though — the FCU is a simple machine that simply consists of either a cooling or a heating coil and a fan. Compared to the air handling unit (AHU), the fan coil unit is not as complex and extensive. It’s a singular aircon system that can stand and operate on its own to circulate air without the existence of ductwork.

Additionally, most fan coil units function by controlling the temperature of a space through the use of circulated cold or hot water. Oftentimes, this water is taken from a central plant that is complete with the necessary equipment such as a cooling tower and boilers. These two then get rid of the heat and generate hot water, respectively.