Starting 2017, the Mercedes-Benz E-Class and S-Class will be fitted with carbon dioxide (CO2) air conditioning systems.

Starting 2017, the Mercedes-Benz E-Class and S-Class will be fitted with carbon dioxide (CO2) air conditioning systems.

This decision has been taken as a way to fully comply with the legal provisions that will come into effect in 2017 and the first cars to take advantage of the CO2 air conditioning system are going to be the E-Class and the S-Class sold in Europe. Both of them will actually exceed the European Union’s climate protection requirements and will offer a “pleasant feel-good climate” inside the cabin even when it’s very hot outside.

The newly developed system will work at a pressure of more than 100 bar which represents an increase of up to ten times compared to the conventional AC systems available today. As a consequence, the engineers had to redesign all of the components based on the standards previously agreed upon with the other German car manufacturers and suppliers.

Only the E and S will be ready in time for January 1, 2017 when the EU directive will come into effect while the others will use a synthetic refrigerant known as “R1234yf” that has been fully tested on all of the company’s models.

Interestingly, in case of a frontal collision, the resultant refrigerant/air mixture will be separated from the hot engine parts and there is going to be a gas generator which will cool down the high-temperature components. At the moment this is a patent-pending system, but Mercedes-Benz is making all the efforts to get it approved.

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