Yes, it is possible to exhaust the hot air from a portable air conditioner to another interior room through a vent in an adjoining wall. This method is known as "dual-hose venting," and it can be more efficient than traditional single-hose venting for some portable air conditioner models.
In a standard single-hose portable air conditioner, the unit takes in warm air from the room it's cooling, cools it down, and then exhausts the hot air outside through a single hose. This process creates negative pressure in the room as air is continuously being expelled, leading to warm air being pulled in from other sources like cracks around doors and windows. As a result, the air conditioner needs to work harder to maintain the desired temperature, potentially reducing its overall efficiency.
Dual-hose venting addresses this issue by using two separate hoses: one for intake and one for exhaust. One hose pulls in air from outside the room to cool the air conditioner's condenser, and the other hose exhausts the hot air back outside. By doing so, it eliminates the negative pressure problem associated with single-hose units.
If you redirect the exhaust hose to another interior room through a vent in an adjoining wall, you'll essentially be using that room as the cooling unit's "outdoor" environment. This can be beneficial in situations where you want to concentrate the cooling effect in one area or when there are no suitable windows available for venting.
However, there are a few things to consider when using this setup:
Efficiency: Dual-hose venting can improve efficiency, but it's still important to ensure that the intake air is relatively cool and not drawn from a space that's already hot or poorly ventilated.
Air Circulation: Make sure there's adequate air circulation in both rooms to allow the air conditioner to work optimally. Keep interior doors open to facilitate airflow.
Insulation: Properly insulate the vent in the adjoining wall to minimize heat exchange between the two rooms and prevent unwanted heat gain.
Condensation: Portable air conditioners produce condensation as they cool the air. Ensure that the condensate is correctly drained or collected, regardless of where the exhaust air is directed.
Check Manufacturer's Guidelines: Some portable air conditioners are not designed for dual-hose venting, so it's essential to check the manufacturer's guidelines and recommendations for your specific unit before attempting this setup.
By following these considerations and ensuring a proper setup, you can effectively exhaust the hot air from a portable air conditioner to another interior room through an adjoining wall vent.