In general, window air conditioners tend to be more efficient than portable air conditioners. Here's a comparison of the two in terms of efficiency, dehumidification, and heat removal:
Efficiency: Window air conditioners are typically more efficient than portable air conditioners. Window units are designed to fit snugly in a window opening, allowing for better sealing and minimizing air leakage. This results in better cooling efficiency as the unit draws in outside air, cools it, and exhausts the hot air outside. Portable air conditioners, on the other hand, rely on a flexible exhaust hose to vent hot air through a window or another opening. This hose can lead to some air leakage, reducing overall efficiency.
Dehumidification: Both window and portable air conditioners have the ability to dehumidify the air. As air passes through the cooling coils of the unit, moisture condenses, and the humidity level decreases. However, portable air conditioners may have a slight advantage in dehumidification because the cooling coils are located within the room being cooled. This allows the unit to cool and dehumidify the air more effectively. Window units, on the other hand, may draw in some outside humid air, which can affect the dehumidification process.
Heat removal: Both types of air conditioners are designed to remove heat from the room. Window units are typically more effective at heat removal because they are installed directly in the window, allowing for a more efficient exchange of heat with the outdoor environment. Portable air conditioners, due to their design and exhaust hose, may have some limitations in removing heat. The exhaust hose can get warm, and if it is not properly insulated or extended, it may lead to heat buildup in the room.
In summary, while window air conditioners are generally more efficient and effective at removing heat from a room, portable air conditioners can offer slightly better dehumidification due to the location of their cooling coils. It's important to consider the specific requirements of your space, including the size of the room, insulation, and any restrictions or limitations imposed by the building, before deciding which type of air conditioner is the best fit for your needs.