When it is dirty.
When it is dirty.
An air purifier's filter should be changed every year, with the pre-filter cleaned or replaced every few months, depending on the conditions that the device operates in. Always follow the manufacturer's instructions.
Depending on how much you drive your car should be how often you change your air filter. Sources say you should change it when you go to get your oil changed cause they both last about the same time.
Your air filter should be changed each time you have a oil change or perhaps a tune up which should be every 6 months.
Every 5000 miles an air filter should be changed regularly. You can stretch the life out of an air filter by just blowing some of the dirt out.
Air filter should be changed at least once a year or whenever the indicator goes off on the dashboard, whichever comes first.
monthly, but depends on how often you run the purifier. Periodically check for dust during the summer
Depends on which filter you are asking about. Oil Filter = Every 5,000 miles. Air/Cabin Filter = Every 30,000 miles. Fuel Filter = Every 50,000 miles.
Each air conditioner take a different size of filter. The air filter should be checked routinely and changed as needed.
The air filter on the Alen A350 should ideally be changed every year, but you could probably get away with replacing it every year and a half.
Maybe "mileage" isn't a proper determinant for whether the air filter needs to be changed?
It depends on how often you use your car. If you're a city driver changing it every year is a good idea. If you drive a lot you will have to change your filter more often as it depends on how much crud it ingests.