Quote:
Originally Posted by YWORRYDOG
... I looked at your link closer, and see that it is dual hose, that may solve the problem.
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Dog, you are exactly right. A dual hose unit should be considered a must. The reason is this.
An air conditioner has two separate parts within it. One part creates the coolness that we want, but in the process of generating this coolness, the other part gets hot. We want the coolness inside, but we want the heat outside, so these two parts must be kept separate.
To do this, the air conditioner has two separate air pathways inside it. In one path, indoor air is taken from the room, blown over the cool surface (the "evaporator"), and returned to the room. In the other path, outdoor air is taken in and blown over the hot surface (the "condensor") and then returned to the outdoors. After passing over the condensor, this air is quite hot, but since we are blowing it outside, we don't care.
In a dual-hose air conditioner, one of the hoses sucks in the outside air, and the other one blows it back out again after has passed over the condensor. But in a single hose unit, there is no source of outdoor air. Instead, air is taken from the room, passed over the condensor, and then blown outside through the single hose. So it is taking air that was just cooled, and heating it up again by blowing it over the condenser and then outside. This doesn't make much sense, and is both ineffective and horribly inefficient. It is also, of course, cheap.
And just to make a bad situation even worse, if you take air from inside the room and blow it outside, that air has to be replaced. And just as you said, it is replaced with warm air from outdoors!
Get a dual hose unit.
Bill