You will need to replace the air filter at least once every six months. This is also depending on how you house circulate the dirt and dust around your home. You may have to replace more then often when you first purchase the item.
The filters are what needs to be replaced most often on the air conditioning units.
The Honeywell filter should be replaced every 8- 12 months or as needed.
A Bionaire humidifier with a permanent filter will never need to be replaced. Yet it is necessary to make sure that the filter is cleaned properly on a regular basis.
Most vacums need to be replaced every 20-30 uses.
Generally a filter on a fish tank needs to be replaced once a week. If the fish tank is especially dirty, then it may need to be replaced more often than that. Generally, the more fish there are in the fish tank, the more often the filter will need to be replaced.
To fix the air conditioning on the Peugeot 406, the steps will vary depending on the problem. Often, if the air conditioner does not come on at all, a fuse or wiring will need to be replaced. If the air conditioner blows hot air, the condenser or the coolant system might need to be replaced. If the air conditioner lacks a fan, the blower motor might be bad.
The filters in an Ionic Breeze dont not require a filter change.
If you need to purchase a replacement filter for your air conditioning system, you need to know what sort of condition your air conditioner is in. If you can find a trusty repairman, see if you can get advice on whether or not you should get a new filter.
If the diesel fuel "gels" then yes the filter will need replaced.
I recommend every 36,000 miles. Models after 1992 do not need the fuel filter replaced, and it is not recommended by the manual (lifetime filter on the fuel pump)
If dust is coming from your air conditioner, you did not put in a filter. You will ruin your air conditioner running it without a filter. Also, the vents will get dusty. You need to clean them.
Coils and filter need cleaning.