This accessory for mobile air conditioners has been specially developed for German tilt and turn windows (typical German windows). This solution saves energy so that it pays for itself within a very short time. A lower temperature is possible in the respective rooms in a shorter time. Among other things, it prevents heat from outside in particular and the warm exhaust air generated by the air conditioner itself from flowing back into the room. As a side effect, it also keeps mosquitoes and other unwanted insects away.

In addition, it also seals the open window against moisture. Noise from outside is also muffled by HotAirStop. This accessory can also be used for exhaust air dryers, both in the warm and in the cold season. The windows can be closed without any problems even when the accessories are mounted, first gather one corner inwards and then the other. The mounting is done with self-adhesive Velcro strips which are very easy to attach. Please note that the exhaust air hose is not part of the scope of delivery, this is normally included in the purchase of a mobile air conditioner.

The problem: "Where to put the exhaust air hose?" is solved and no one has to become a tinkerer or handyman. This accessory is suitable for all common window sizes whose total circumferential dimension does not exceed 400 cm. The applicable window size results, for example, from: 1x window height left + 1x window height right + 1x window width.