Q:

How energy-efficient are portable air conditioners?

A:

Quick Answer

Portable air conditioning units are significantly less efficient than both wall units and central systems. In addition, they are generally not as portable as they appear in pictures.

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Full Answer

Portable air conditioning units must vent heat outdoors to work, and the hoses they use draw a significant amount of power. As a result, they use more energy than units that are able to vent hot air through freon or another refrigerant.

Portable air conditioning units can also create a slight vacuum in rooms that are sealed well. Because of this, using a portable air conditioner to heat a single room can be counterproductive.

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