The best air purifiers can help filter fine particles, gases and other pollutants from the air you breathe. See our top picks ...

The same thing happens when homeowners replace high-airflow filters provided by installers ... reading back into the target range: Increase air flow to the blower by increasing the size of the ...

When replacing an air filter, always use OEM (original equipment) or better. Companies such as K&N and others make high flow air filters that last for the life of the vehicle. For instance ...

We also confirmed that it delivers a consistent, high flow rate of 2.5 gallons per minute (that's pretty good, BTW). Plus, its filter cartridge only needs to be replaced every 12,000 gallons ...