When to turn off the car air conditioner?

1. Turn off the air conditioner before turning off the car engine

One of the most commonly heard advice is to turn off the car’s air conditioner before turning off the engine, the reason is so that when starting the engine, the car does not have to “piggyback” on the air conditioner, thereby reducing fuel consumption and battery power.

Turning off the air conditioner before stopping the car is not only good for the engine but also good for the health of the occupants. Because turning off the air conditioner before turning off the engine, the air in the car has a temperature closer to the outdoor temperature, helping you not to experience thermal shock when opening the car door… It is best to turn off the air conditioner before the end of the trip. about 1-2 minutes, at the same time run the blower to dry the louver, avoiding moisture accumulation and causing odor.

2. Turn off the air conditioner before entering the flooded road

Should turn off the air conditioner before driving through the flooded road. The reason is because the air conditioner always has a ventilation fan to get the air from outside first. However, if the flooded section is too high, the exhaust fan will turn into a pump to suck water into the engine, possibly even sucking in garbage, causing the engine to overload.

Besides, turning off the air conditioner also helps to reduce the burden on the car that is struggling against the water force of the flooded section. You need to know that the car going through the flood has a great inertia and needs to run at high power.

3. Turn off the air conditioner when climbing uphill

If your car is too old, the engine is weak, you should turn off the air conditioner before climbing uphill. The reason is to reduce the load on the vehicle, because running uphill “consumes” a lot of energy. It should be noted that the glass door should not be opened when running uphill, because many high-slope areas with fog will easily cause condensation. glass water when opening the door, resulting in reduced driver visibility.

The procedure to turn off the air conditioner on a slope is as follows: Put the D gear when going uphill, in the case of a 10% steep slope, shift into 2 or L gear, turn off the air conditioner. If going downhill, run L or 2, turn on the AC with AC. When braking, do not use brake pads because it can cause heat and accelerate brake wear.

4. Turn off the air conditioner when the car is about to run out of gas

When the car is about to run out of gas, you should offload whatever you can, including the air conditioner. In fact, turning off the air conditioner also helps you avoid wasting fuel… It should be noted that when turning off the air conditioner, you should still keep the fan so that the air in the car is sufficiently airy. Even if you finish pressing the clutch disconnect button to turn off the A/C pump, the car will still cool for a few minutes because the Freon pressure on the indoor unit (evaporator) has not yet returned to balance.

For manual air conditioners, you should turn off the air conditioner in more cases, for example, climbing a high slope, old machine is weak, dirty gasoline, radiator cap is open, air filter is too dirty to be blocked…