The filter tank should last for years. However, the inside parts might last 3 to 8 yrs. depending upon whether the filter media is sand, DE ( the grids do degrade after about 8 yrs and will have to be replaced if torn or they have holes in them) or Cartridge elements.
How often should you change the fuel filter?
It is difficult to provide a definitive answer as to how often one should change a water filter cartridge. This would depend on the water quality as well as water usage, but the average is usually every 2 to 4 months.
You should change a furnace filter every 2-4 months.
Change the oil filter every time you change the oil.
Less maintainance with sand you just backwash, and change sand every four years. Cartridge filters clog and have to be taken out and cleaned often. Use sand it is hands down a better system.
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.
It will depend on how often you use your Jenn Air cartridge. Typically it will need to be changed every 2-3 months, but heavy use will require quicker changeovers.
You should typically change the water filter in your fridge every 6 months to ensure clean and fresh-tasting water.