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Discover LudwigThe phrase "air filter" is correct and usable in written English.
You can use it when referring to a device that removes impurities from the air, commonly found in vehicles, HVAC systems, or air purifiers.
Example: "It's important to replace the air filter in your car regularly to ensure optimal engine performance."
Alternatives: "air purifier" or "air cleaner".
Dictionary
air filter
noun
A filter for removing dust and other particles from a stream of air, typically used in the air intake of an internal combustion engine, the output of an air compressor, the supply duct of a forced-air furnace, etc.
synonyms
Exact(60)
Air filter condition.
An auto air filter and fan provide climate control.
In which case, get adecent fan and air filter.
The X200U's female voice says "check the air filter for dirt" when it is time for you to clean its air filter.
One thing homeowners can do themselves in the meantime is to check the air filter monthly.
The air filter is no freer than before, but the bolt is painfully de-threading itself.
Hey, why are you all trying to fix the air filter while I'm talking to you?
"We have protective coverings on the bed, an air filter and no pets," Mrs. Hashagen said.
Air filter applications for filtration media and filters are reviewed.
[Update: Elon discussing the air filter in the Model X].
1. Engine air filter and cabin air filter (if equipped).
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