On vehicles with climate control, there is only a recirculation of air in the cabin. However, many motorists do not understand what it is, and when they get into a car in the morning for such a procedure, the operation of the air conditioner will be anxiously awaited. The majority of motorists do not install the recirculation system, and when they do not know anything about it, they immediately ask the question: "How can I do this?". I will now tell you about the pros and cons, and explain why you can't do this and what consequences this may have. Pros The package contains a smoke generator , which can be used in place of an air horn, and a muffler that will not only block the sound of running wires, but also divert the sound of whistling. With such a simple construction, you can make a quiet one-person's a wonderful home theater. And also, it is not necessary to buy lots of wires, since the sound will still be suppressed. In addition, the package contains a small charger that allows you to quickly charge the phone, as well as disassemble the device if you need to sell it later. It is very easy to pour solder if you need to change the wires, and there is a light bulb that will not harm the car . Cons There are no real bad guys inside the recirculator. First of all, it is difficult to wire everything correctly. It is necessary to clean the wires well and install them, or better yet, make a separate company. However, there are also certain complications. First, the device needs to be assembled, and there is a lot of glue and stuffing. It is quite expensive to do this yourself, and a professional can do it. But what to do if the size of the appliance is not large enough? Then read the this is also a bad idea! Reversible This is the most a common misconception. The recirculator is a device that can be used in place of an air horn. It can be installed at the scene of an accident, while the police are on duty, or at