Clean dust and dirt regularly: Use a soft cloth or vacuum cleaner to gently remove dust from the outside and air intake of the Portable Hot And Cold Gear Car Heat Fan. Avoid using a damp cloth or water to clean directly to prevent moisture from getting on the electrical parts. If dust has accumulated inside the fan, you can carefully blow it out with a can of compressed air. Always do this after the power is disconnected and the fan has completely cooled down.

Check and clean the filter: If the fan is equipped with a filter, check its cleanliness regularly. Depending on the frequency of use and environmental conditions, the filter may need to be cleaned more frequently. When cleaning the filter, you can rinse it gently with water and then let it dry or wipe it with a clean cloth. Make sure the filter is completely dry before reinstalling the fan.

Avoid corrosive substances: Make sure there are no corrosive substances around the fan, such as chemicals, salt spray, etc., which may damage the fan's housing and internal components.

Check the fan blades and motor: If you find that the fan is running erratically, making unusual noises or vibrations, it may be a sign of unbalanced fan blades or motor failure. At this time, you should contact the manufacturer or a professional maintenance person for inspection.

Replace worn parts: According to the product manual or the manufacturer's recommendations, regularly check and replace worn parts such as filters, bearings, etc. Wear of these parts may affect the performance and life of the fan.