Quote Originally Posted by Jun aka Pekto View Post
The dual-hose portable air conditioner generally uses more electricity than the single-hose one because the input air from the outside requires more cooling power. For small bedrooms like my den, I'm better off with a single-hose unit because the seeping air comes under the (closed) door from the hallway which is still much cooler than the outside air. The single-hose unit usually comes with adjustable boards and fittings so that gaps around the window are minimized.

I would consider the dual-hose unit if I'm cooling a living room or kitchen. But, we bought a window unit instead.
Wrong.

The dual-hose model recirculates interior air so it cools much faster and is more efficient.


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