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Q:

What is the difference between a single hose design and a dual hose design?

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4 Answers

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Single Hose System Pros: Single hose unit will have a high EER rating then the single hose and does not draw as much power because it only has one motor and more fresh air Cons: A single hose cool the condenser by pulling the air from the room they are cooling, and then this air is expelled through their exhaust hose. This creates the negative pressure in the room, in which hot air is continually seeping into this room you are trying to cool from the rest of the house or building to replace the air that the portable AC expels, so that effective cooling capacity is reduced, and slower initial cool down Dual House System Pros: Dual hose unit work with one hose intakes outside air to cool the condenser and another hose to expel this air A two hose unit can cool the room air quicker than a single hose unit, approximately 2~3 times faster depending upon the room size and outside temperature . Also a two hose unit can achieve energy savings since it can reduce the compressor from ... more
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Some portable air conditioners have one air exhaust hose and some have two air hoses, one for air intake and one for air exhaust. A single hose unit will take air from the room that it is in and return most of that air back into the room as cold conditioned air. However, a small amount of that air will be used to cool the unit and be blown out of the air conditioner's exhaust hose. This results in a slight negative pressure in the room being cooled as a small amount of air is constantly being removed from the room. If this negative pressure is adjusted for by drawing unconditioned air into the room from adjacent spaces then the cooling efficiency is slightly affected. A dual hose unit works by taking in air from the outside through one of its hoses and using that air to cool the unit - and then that hot air is expelled through the exhaust hose. As such, it does not create negative pressure inside the room being cooled. However dual hose units use warmer unconditioned air to cool ... more
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Some portable air conditioners have one air exhaust hose and some have two air hoses, one for air intake and one for air exhaust. A single hose unit will take air from the room that it is in and return most of that air back into the room as cold conditioned air. However, a small amount of that air will be used to cool the unit and be blown out of the air conditioners exhaust hose. This results in a slight negative pressure in the room being cooled as a small amount of air is constantly being removed from the room. If this negative pressure is adjusted for by drawing unconditioned air into the room from adjacent spaces then the cooling efficiency is slightly affected. A dual hose unit works by taking in air from the outside through one of its hoses and using that air to cool the unit - and then that hot air is expelled through the exhaust hose. As such, it does not create negative pressure inside the room being cooled. However dual hose units use warmer unconditioned air to cool their ... more
thermospace.com
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Single Hose System Pros: Single hose units will have a high EER rating and does not draw as much power because it only has one motor and more fresh air. Cons: A single hose unit cools the condenser by pulling the air from the room they are cooling, and then this air is expelled through their exhaust hose. This creates the negative pressure in the room, in which hot air is continually seeping into this room you are trying to cool from the rest of the house or building to replace the air that the portable AC expels, so that effective cooling capacity is reduced, and slower initial cool down. Dual Hose System Pros: Dual hose units work with one hose intaking outside air to cool the condenser and another hose to expel this air. A two hose unit can cool the room air quicker than a single hose unit, approximately 2~3 times faster depending upon the room size and outside temperature . Also, a two hose unit can achieve energy savings since it can reduce the compressor from continually ... more
iapcooling.com

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