Others, like full HVAC systems or the ACs installed ... it in the window to exhaust all the hot air the air conditioner ...

To make matters worse, my 115-year-old house doesn't have an HVAC system ... Whereas most portable air conditioners just have one hose for exhaust, the Midea Duo has a unique hose-in-hose design.

A global team of researchers has developed a system that harnesses the exhaust grill of an air conditioning (AC) system for the cooling of PV panels as well as drying dishes in a dishwasher.