But when should it be done? There’s no specific interval; generally, it’s every two years or every 60,000 km . However, there are some signs you should pay attention to to understand that it’s necessary to intervene, such as a decrease in performance.
1. Bad smell
When your air conditioning gives off an unpleasant odor , it’s a clear sign that it needs to be recharged. This odor indicates an unhealthy air conditioning system , due to the accumulation of dust and dirt inside the system over time. Therefore, it’s important to act as soon as possible to ensure healthier air inside your vehicle.
Pollen filters, while useful, cannot completely trap polluting microparticles, allowing them to cause bad odors and encourage the proliferation of mites . In this case, the main recommendation is to have the system thoroughly cleaned by a specialist before recharging your car’s air conditioning .
2. Weak jet
Another sign that it’s time to recharge the air conditioning is a weak air flow, meaning little air comes out of the air conditioning vents, even when the fan speed is increased . In this case, the air conditioning becomes practically useless because, even at maximum power, it won’t cool or heat the car as needed.
Another related problem is when the air conditioner produces a good flow of air but fails to cool even after several minutes. In these cases, simply recharging the air conditioning system restores proper operation . However, it is essential to perform periodic checks to avoid recurring problems, and to check the air level beforehand.
3. Fogging up windows
Fogging windows are a bothersome problem in all seasons, both in winter and in hot , humid conditions. Fogging is caused by the outside air meeting the inside air , which is often at different temperatures. Typically, turning on the air conditioning for a few minutes before setting off on a cold setting is enough to resolve this situation. If the problem persists, the air conditioning needs to be recharged.
4. Too long to reach the required temperature
Another clue to consider is the time it takes to reach the required temperature . In other words, if your car’s air conditioner takes longer than expected to reach the set temperature , one of the main problems is the need to recharge the refrigerant. This is necessary to restore the air conditioner to optimal functioning . However, there could also be other related problems, such as a malfunctioning pollen filter or the entire system.
5. Emission of hot air even in summer
During the summer, of course, the air conditioning should be run on cold air to ensure maximum comfort even on the hottest days. Sometimes, however, only hot air comes out of the vent, which makes the situation worse. Even in this case, although it’s not always the case, the problem could be caused by a lack of refrigerant.
However, some checks are necessary to be 100% sure . If the air is already cold when it comes out and warms up later, recharging the air conditioning will solve the problem. However, if the hot air comes out intermittently, there could be a mechanical malfunction , either in the condenser or the air compressor.
In any case, for any air conditioning maintenance, it’s essential to contact industry experts , such as Euromaster. Euromaster workshops provide their customers with certified and trained technicians to check and recharge their air conditioning systems. Their locations offer general air conditioning maintenance, check and recharge the refrigerant gas and oil in the compressor, test the device’s overall effectiveness, and, where necessary, apply an antibacterial treatment to sanitize and change the filter.

