I see portable ACs with a single hose as single room ACs. The room with the AC is cooling and pulling air from the rest of the house. That air is being replaced by outside air in those rooms.
But yeah, passive cooling is always good to do. Even with the best AC.
I have added a second hose to my portable single hose AC. Just a hose that is “hanging” against the input part of the AC so if there is negative pressure, the air will get sucked in directly into the AC.
You can definitely work it to your advantage in some situations. Last time I used one it was in an old apartment building which had AC only in the common hallways. Our unit’s giant windows and about 10,000 coats of paint on everything made the exterior walls functionally airtight compared to everything internal to the building, so creating some negative pressure pulled in “free” conditioned air from the hallway. The only downside was turning our apartment into a sink for everyone else’s cigarette smoke and cooking smells lmao
I see portable ACs with a single hose as single room ACs. The room with the AC is cooling and pulling air from the rest of the house. That air is being replaced by outside air in those rooms.
But yeah, passive cooling is always good to do. Even with the best AC.
I have added a second hose to my portable single hose AC. Just a hose that is “hanging” against the input part of the AC so if there is negative pressure, the air will get sucked in directly into the AC.
You can definitely work it to your advantage in some situations. Last time I used one it was in an old apartment building which had AC only in the common hallways. Our unit’s giant windows and about 10,000 coats of paint on everything made the exterior walls functionally airtight compared to everything internal to the building, so creating some negative pressure pulled in “free” conditioned air from the hallway. The only downside was turning our apartment into a sink for everyone else’s cigarette smoke and cooking smells lmao