When it comes to car maintenance, one of the most important components is the air filter. It is designed to remove a large amount of unwanted debris, but only when installed in the right direction. If you place the filter upside down, the normally collective end of the device will not face the air supply and it will help keep dirt in the air. Several companies make high-quality air filters that prevent up to 99 percent of dust and dirt from entering the engine for up to 12,000 miles. When installing a new air filter in the return duct of the air conditioner, the arrows point inward to specify in which direction the air flows.
If the wrong filter is applied to the engine or the filter is applied incorrectly, the car's engine is left open to dust particles. This can cause the engine to overheat or even burn, as clogged or dirty filters will reduce the amount of air that flows through the vents. Driving without an air filter is not recommended as they keep unwanted debris and sediment out of the indoor air and help the system run smoothly for years to come. In these models, it is only necessary to remove the screws, with a screwdriver, in order to access the cabin filter. Have your mechanic scan your vehicle to locate the source of the problem, as it could be as simple as replacing the air filter. In addition to this, it is important to check and replace the air filter regularly to prevent engine damage.
This arrow should always point towards the oven and away from the return line that transports the air to be heated or cooled. Installing the filter upside down will make it difficult for air to pass through the filter and the air conditioner will have to work harder to compensate for the loss of air flow. An air filter may not seem like an essential component, but it's more important than one might think. So it won't stop the air flow if you make a mistake, but it will stop a more restricted air flow if you install it incorrectly.