DualExhaustPortable air conditioning has certainly come a long way. What started as an appliance that gets installed in a window now can be placed on the floor anywhere in your room and can easily be moved to other locations in your house.

This allows those aesthetically conscious consumers to ditch the big eyesore sticking out of their window and go for something a little more pleasing to the eye.

The basic technology of the window and portable room style air conditioner are essentially the same. A fan, a compressor and a vent source. What the portable air conditioner has done however is to offer either a single or dual vent option.

Why Do I Need a Portable Air Conditioner Exhaust Hose?

The exhaust is the most crucial aspect to the air conditioner. When an air conditioner runs the compressor heats up and something must cool it down. The ac unit draws air into it and uses it to cool down the compressor and hence the refrigerant.

Dual Hose Portable Air Conditioner Vs Single Hose

A single hose unit draws air from the room and exhausts it via the supplied hose. The drawback of this design is that it is venting air to the outside and when that happens, your house will begin to develop a negative pressure which in turn pulls air into it from the outside. While this isn’t the end of the world necessarily, it can be rather energy inefficient. If you are trying to cool down a space but you are drawing warm air directly into it or into an adjacent area, your kind of fighting an uphill battle. Yes the unit will work but it is adding additional warm air into your house.

A dual hose exhaust pulls in outside air to cool down the unit and then vents it back out. The benefit of this method is that the ac unit is not creating a negative pressure in your house and in turn is not creating more heat that it then needs to cool off. So yes, you have one more hose to deal with but it provides the most energy efficient method to cool your space.

Portable Air Conditioner Without a Hose?

So can you buy a portable ac unit without a hose vent or exhaust air system? Unfortunately, no. Air conditioners need some way to cool themselves down in simple terms and the air flow and hot exhaust air are what is doing it. There are wall mounted air conditioners that don’t have the exhaust hose but they instead are piped to a separate split outdoor unit which utilizes the intake and exhaust system of cooling. These however would not be considered portable as they need to be fixed to the wall.

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