In principle, it is not difficult to achieve such a temperature difference; it is enough to install an air conditioner in the car. But the device is not cheap, and it is somewhat whimsical in maintenance. You can manipulate the glass windows, but it is unlikely that you will be able to achieve the optimal result. There is no effect from a small crack, and the wind rushes into a well-opened window - there is no time for a temperature drop of 6-7 degrees, especially in winter.
A compromise solution could be a sunroof. It is thanks to him that you can significantly improve the microclimate of your car.
When driving, the speed of the air flow over the car is quite high. Inside the cabin, it is practically absent. Accordingly, the air pressure in the cabin is greater. But one has only to slightly open the hatch, as the air from the inside begins to be drawn out. This is easy to check by smoking in "hatched" car. The smoke from the cigarette will begin to come out in a trickle, not even leaving a smell in the cabin. And this cannot but affect the microclimate inside the car (both literally and figuratively), especially when there are smokers and non-smokers in it.
Due to the fact that there is an intensive exchange of air in the passenger compartment of a car with a sunroof, the heater also works more efficiently here in winter, providing the necessary temperature balance.
In addition to all of the above, one more important thing can be noted. In the event of an accident, when it is difficult or impossible to get out of the car through regular doors and windows, the sunroof can be used as an emergency exit.
By the way, have you noticed? Strange, in the opinion of linguists, the word "hatched" entered the lexicon of motorists quite thoroughly and no longer causes bewilderment. As, however, the sunroof itself in the roof of the car, which was considered at first the ultimate luxury and belonging only to very expensive foreign cars.
What are the hatches?
Conventionally, they can be divided into two classes. The first is the hatches that are installed on the car at the factory. They are usually opaque (although there are exceptions), and in the open position the cover is hidden under the headlining. There are especially "fancy", consisting of two halves and providing several modes of operation: air intake, exhaust, reinforced exhaust. The drive they have in most cases is either mechanical (manually), or already electrified.
Mortise hatches belong to the second class. They can be seen on most of both imported and our cars. They are usually different from "branded" a transparent cover and one position in which the vehicle is exhausted from the interior air. (Although there are models that allow you to completely remove the cover and enjoy the open sky above your head. But more on that later.)
What are good mortise hatches? An indisputable advantage is that they are unified: you can install this miracle on any car, from Cadillac to "Zaporozhets". The installation process does not take much time, of course, if you have the skills. It takes an hour and a half to two hours for a specialist. The hatch kit includes a paper template, according to which a window is cut out in the ceiling. Psychologically, the procedure, of course, is not pleasant - on a new car they open the roof like a tin can. However, not even on the new (namely such "democracy" mortise hatches differ). But mental discomfort should overcome the anticipation of the merits of this simple device.
After being taken off "foam", the roof reinforcement is removed, more precisely, that part of it that got into "window" opening He is replaced in the future by the hatch frame, which does its job just as well. The penultimate action is to remove part of the upholstery of the ceiling. And in conclusion - the installation of the hatch, vaguely reminiscent of the assembly of a hoop for embroidery on fabric. After that, it is not recommended to use the hatch for three days: the sealant, which is used during installation, must harden. (If you have had to deal with "lids" - this is the name of the hatches in slang - which flow, then this is precisely due to the fact that the last requirement has not been met.)
What are mortise hatches? The choice here, however, as well as the range of prices, is great: from the simplest, opening in one position and costing their owners $ 180 with installation, to "fancy" electric for $700 with the same setup.
But the best option, in our opinion, is the installation of a hatch that opens discretely, in several fixed positions, and provides the most suitable open angle in a particular case. Usually these "lids" have from two to four fixed positions or a mechanical drive in the form of a rotating handle.
Most hatches are made of tinted glass. But sometimes even such protection is not enough, especially when the sun is at its zenith. In this case, sun shades, which are included with some "lids".
There are hatches that not only provide air exhaust from the passenger compartment, but are also removable. This option will suit safari lovers. You can lean out into the open hatch either with a gun or with a camera. Only in the car you need to prepare a place in advance for the filmed "lids". Although it is made of tempered, and sometimes reinforced with microwire glass, it still requires careful handling.
The most expensive and time-consuming installation is considered to be an electric sunroof. If it is not sliding, then the principle of its operation is no different from others, just the opening process is entrusted to the electric motor. By and large - pampering, but in the presence of a proprietary alarm (ensuring locking of all windows when arming) you will not forget to close the hatch, he will do it himself.
The sliding sunroof provides the owners with much more opportunities. We can say the sum of all combined. That's just in the shifted state, it remotely resembles a fairing on the main tractor. Although this can be a handy addition for a car that often needs to tow a caravan. The car is not hot, and fuel economy is evident. Press the button and you're done. True, the price of $ 700 bites a little. However, everyone is free to choose. Moreover, a healthy microclimate in a car is not a luxury, but a necessity.
Hatch options
| Name | Manufacturer country | Design features | Price with installation (USD) |
| Nakita | Hungary | 2 positions open-closed | 180 |
| Nakita Extra | Hungary | 3 fix. positions, removable glass | 220 |
| Air Light | Italy | 4 fix. positions, removable glass | 260 |
| Iceland | France | 4 fix. positions, removable glass | 270 |
| Galileo | France | rotating handle, removable glass | 280 |
| Galileo | France | rotating handle, removable glass, curtains | 300 |
| Brezza | Italy | electric drive | 700 |