An un-ducted air conditioner, also known as a non-ducted or free-standing air conditioner, is a self-contained cooling unit that does not rely on a duct system to distribute air throughout the space. Instead, it is a self-contained unit that sits inside the room or the area it needs to cool. These units are often portable and can be moved from one location to another.
Here's how an un-ducted air conditioner works in the long term:
Cooling Mechanism: Un-ducted air conditioners use a refrigeration cycle to cool the air. They draw warm air from the room, pass it over evaporator coils where heat is absorbed, and then blow the cooled air back into the room. The heat collected by the evaporator coils is expelled outside through another set of coils (condenser coils) along with the help of a fan.
Venting: Un-ducted air conditioners need a way to vent the hot air generated during the cooling process. This is typically done using a flexible hose that connects to a window venting kit or through a specially designed opening in the wall. The hot air is then released outside.
Now, let's compare un-ducted air conditioners to regular ones with ducts attached:
Installation: Un-ducted air conditioners are easier to install since they don't require complex ductwork. You can typically set them up without professional help. On the other hand, traditional central air conditioning systems with ducts need professional installation, which can be more time-consuming and costly.
Flexibility: Un-ducted air conditioners offer more flexibility as they can be moved around the house or used in different locations, making them ideal for renters or for cooling specific rooms. Ducted systems, being fixed installations, cannot be easily moved or repositioned.
Efficiency: Ducted systems, when properly designed and installed, tend to be more efficient at cooling larger spaces or entire homes. They can evenly distribute cool air throughout multiple rooms. Un-ducted units may struggle to cool large areas and may be less efficient in terms of energy consumption.
Noise: Un-ducted air conditioners can be noisier since the cooling unit is located within the same space you want to cool. Ducted systems, when properly designed, can be quieter because the noisy components (compressor, fan) are located outside the living area.
Aesthetics: Some people prefer the aesthetics of ducted systems as they are hidden from view, leaving only vents visible. Un-ducted units can be more noticeable in the room, but they often come in compact and sleek designs.
In summary, un-ducted air conditioners are effective for spot cooling or cooling specific areas, providing flexibility and easy installation. However, for whole-house cooling and optimal energy efficiency, central air conditioning systems with ducts are generally more effective in the long term. The choice depends on your cooling needs, budget, and whether you prefer a more permanent or portable cooling solution.