I recommend every 50,000 miles.
How often should you change the fuel filter?
Change the oil filter every time you change the oil.
You should change a furnace filter every 2-4 months.
when it is dirty
The amount of time you run the air conditioner depends on how often you should change the filter. Generally you should change the filter at least once every 5-6 months of use.
Every 30,000 miles.
70,000 miles
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.
You should typically change the water filter in your fridge every 6 months to ensure clean and fresh-tasting water.
Whenever it gets dirty.
every 12000 miles
Every 2 years