When the unit is being used, the exhaust air pressure will keep insects from entering through the exhaust hose. It is best practice to disconnect the Portable AC from the window opening and use the supplied cap when it is not being used.
When the unit is being used, the exhaust air pressure will keep insects from entering through the exhaust hose. It is best practice to disconnect the Portable AC from the window opening and use the supplied cap when it is not being used.