The more often an evaporative cooler runs, the more the cooler pads will have to be replaced. A good rule of thumb is to check the cooler for maintenance issues every month. In hot climates, they will need to be changed every month, and in cooler areas, the pad should be changed at least twice during the operational season.
They are replaced when they go bad.
One week
What you meant to ask is how often should the timing belt be replaced! And the answer is every 90,000 miles for b2000 model.Ok
Monthly
Monthly
The Honeywell filter should be replaced every 8- 12 months or as needed.
When they wear out.
about every 2 years
Although there is no set on how often your brakes should be replaced, I would just pay attention to your car. When you notice something wrong, I would call your auto body shop.
Fridge filters should typically be replaced every six months to ensure clean and safe drinking water.
Eyeglasses should be replaced typically every two years. Eyeglasses can break or if expiration is past then a new examination should be taken to get a new pair.
Whenever they get REALLY yucky, or ripped apart.