Myths about Car Air Conditioning
Discover the truth about the cold air in your car! Save fuel, avoid illnesses and drive in comfort. We debunk the myths so you can enjoy the summer!

With the thermometer reaching 40°C and the asphalt boiling, the car's air conditioning has become the Brazilian's best friend. But do you know everything about it? At Bella da Semana, we reveal 8 myths that may be preventing you from making the most of your cold air, without paranoia and with a lot of style.
Open the windows on the highway and turn off the air conditioning! Myth! Thinking that turning off the air conditioning and opening the window on the highway saves fuel is nonsense. The car's aerodynamics go out the window with the windows open, forcing the engine to work harder. The result? More fuel consumption!
Never-ending oil changes? Relax! Air conditioning oil doesn't need to be changed like engine oil. It only needs to be changed if there's a leak or maintenance is needed on the system. No worries!
It uses up the air in the system! The air conditioning gas does not "use up" over time. If it disappears, it is a sign of a problem with the system. Use it without fear!
Smelly air conditioning? Warning sign! Bad smells in the air conditioning are synonymous with dirt, humidity and bacteria. Urgent cleaning in a specialized workshop!
Just for summer? No way! Modern air conditioning also heats. Use it in cold weather to defog windows and drive safely.
Air conditioning = Increased fuel costs? It depends! At low speeds, the impact on consumption is smaller. On the highway, with the windows closed, the air conditioning on can even be more economical than driving with everything open.
Maximum temperature = Waste? Myth! In cars with variable compressors, the temperature does not affect consumption. In others, the difference is minimal. Use it guilt-free!
Is air conditioning bad for you? Pay attention to hygiene! Failure to clean and change the filter can cause allergies and respiratory problems. Keep everything clean and avoid diseases!
We demystify the biggest paranoia about car air conditioning. Now, you can enjoy your cold air guilt-free, responsibly and in style.
Posted in: 02/19/2025
Last modified: 08/07/2025
0 comments