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There are different models. The classic one is the single hose. There are dual hose models. https://www.menards.com/main/heating-cooling/air-conditioners-acc

by shagie 2y ago

There are different models. The classic one is the single hose. There are dual hose models. https://www.menards.com/main/heating-cooling/air-conditioners-accessories/newair-12-000-btu-dual-hose-portable-air-conditioner/nac12kwhd3/p-1642874313961598-c-1497103338431.htm?exp=false https://www.menards.com/main/heating-cooling/air-conditioner... With the installation instructions https://cdn.menardc.com/main/items/media/LUMAC001/Install_Instruct/2032203_Product_Manual_v1.0_FINAL.pdf https://cdn.menardc.com/main/items/media/LUMAC001/Install_In... on page 11 you can see two sets of air inlets - one for the air exchange with outside, and one for the air exchange inside.

malfist 2y ago
Both should go outside. One should take in outside air to blow over the coils and the other to return that air back outside with the extra heat from inside. All movement of inside air should be over the other side of the condenser and not go outside or come from outside
- philwelch 2y ago
  Yes this is how it is installed. You can see a drawing on page 13 of the PDF. A dual hose model is still less efficient than a window unit, but it’s an improvement over a single hose design.
xnyan 2y ago
Two hose is better but not perfect. The problem is the compressor body is still inside and shedding some of it's heat inside the cooling area. If your need is temporary, the inefficiency is acceptable - otherwise go with a mini split.
- philwelch 2y ago
  Mini split is better if you can install it and don’t want to install a central AC for whatever reason. I don’t think you can usually install a mini split in a rental though. Window AC units are preferable to two hose because the compressor side hangs outside the window (and can drip the condensed water) but sometimes you don’t have double hung windows or your landlord doesn’t allow window AC units.

by shagie 2y ago

malfist 2y ago

Both should go outside. One should take in outside air to blow over the coils and the other to return that air back outside with the extra heat from inside. All movement of inside air should be over the other side of the condenser and not go outside or come from outside

philwelch 2y ago
Yes this is how it is installed. You can see a drawing on page 13 of the PDF. A dual hose model is still less efficient than a window unit, but it’s an improvement over a single hose design.

xnyan 2y ago

Two hose is better but not perfect. The problem is the compressor body is still inside and shedding some of it's heat inside the cooling area. If your need is temporary, the inefficiency is acceptable - otherwise go with a mini split.

philwelch 2y ago
Mini split is better if you can install it and don’t want to install a central AC for whatever reason. I don’t think you can usually install a mini split in a rental though. Window AC units are preferable to two hose because the compressor side hangs outside the window (and can drip the condensed water) but sometimes you don’t have double hung windows or your landlord doesn’t allow window AC units.